Plug-in Type
Digital Indicating DO Meter

WIL-102-DO
Instruction ManualPreface
Thank you for purchasing our WIL-102-DO, Plug-in Type Digital Indicating DO (Dissolved Oxygen) Meter.
This manual contains instructions for the mounting, functions, operations and notes when operating theWIL-102-DO. To ensure safe and correct use, thoroughly read and understand this manual before using this
instrument.
To prevent accidents arising from the misuse of this instrument, please ensure the operator receives thismanual.

Abbreviations used in this manual
Name

Term

DO
DO Display
Display Mode

Dissolved Oxygen
DO Concentration Display
DO Concentration / Temperature Display Mode
DO % Saturation / Temperature Display Mode
Oxygen Partial Pressure / Temperature Display Mode

Characters Used in This Manual
Indication
Number,

/

-1

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

Indication
Alphabet
Indication
Alphabet

Caution• This instrument should be used in accordance with the specifications described in the manual.
If it is not used according to the specifications, it may malfunction or cause a fire.
• Be sure to follow all of the warnings, cautions and notices. If they are not observed, serious injury or
malfunction may occur.
• The contents of this instruction manual are subject to change without notice.
• Care has been taken to ensure that the contents of this instruction manual are correct, but if there are any
doubts, mistakes or questions, please inform our sales department.
• This instrument is designed to be installed on a DIN rail within a control panel. If it is not, measures must be
taken to ensure that the operator cannot touch power terminals or other high voltage sections.
• Any unauthorized transfer or copying of this document, in part or in whole, is prohibited.
• Shinko Technos Co., Ltd. is not liable for any damage or secondary damage(s) incurred as a result ofusing this product, including any indirect damage.

Safety Precautions (Be sure to read these precautions before using our products.)
The safety precautions are classified into 2 categories: “Warning” and “Caution”.
Caution may result in serious
Depending on the circumstances, procedures indicated byconsequences, so be sure to follow the directions for usage.

Warning

Procedures which may lead to dangerous conditions and cause death or serious
injury, if not carried out properly.

CautionProcedures which may lead to dangerous conditions and cause superficial tomedium injury or physical damage or may degrade or damage the product, if not
carried out properly.

2Warning• To prevent an electrical shock or fire, only Shinko or other qualified service personnel may handle theinner assembly.
• To prevent an electrical shock, fire or damage to the instrument, parts replacement may only beundertaken by Shinko or other qualified service personnel.

SAFETY PRECAUTIONS• To ensure safe and correct use, thoroughly read and understand this manual before using this
instrument.
• This instrument is intended to be used for measuring equipment. Verify correct usage after
purpose-of-use consultation with our agency or main office. (Never use this instrument for medical
purposes with which human lives are involved.)• External protection devices such as protective equipment against excessive temperature rise, etc.
must be installed, as malfunction of this product could result in serious damage to the system or
injury to personnel. Proper periodic maintenance is also required.
• This instrument must be used under the conditions and environment described in this manual.
Shinko Technos Co., Ltd. does not accept liability for any injury, loss of life or damage occurring due
to the instrument being used under conditions not otherwise stated in this manual.

Caution with Respect to Export Trade Control Ordinance
To avoid this instrument from being used as a component in, or as being utilized in the manufactureof weapons of mass destruction (i.e. military applications, military equipment, etc.), please investigate
the end users and the final use of this instrument. In the case of resale, ensure that this instrument is
not illegally exported.

PRECAUTIONS
1. Installation Precautions

CautionThis instrument is intended to be used under the following environmental conditions (IEC61010-1):• Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:• A minimum of dust, and an absence of corrosive gases• No flammable, explosive gases• No mechanical vibrations or shocks• No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 ) that does notchange rapidly, and no icing• An ambient non-condensing humidity of 35 to 85%RH• No large capacity electromagnetic switches or cables through which large current is flowing.
• No water, oil, chemicals or the vapors of these substances can come into direct contact with theunit.
• If the WIL-102-DO is installed within a control panel, the ambient temperature of the unit – not theambient temperature of the control panel – must be kept under 50 . Otherwise the life of electronicparts (especially electrolytic capacitors) of the unit will be shortened.
Note: Do not install this instrument on or near flammable material even though the case of this
instrument is made of flame-resistant resin.
32. Wiring Precautions

Caution• Do not leave wire remnants in the instrument, as they could cause a fire or a malfunction.
• Use a solderless terminal with an insulation sleeve in which the M3 screw fits when wiring theWIL-102-DO.
• Tighten the terminal screw using the specified torque. If excessive force is applied to the screw
when tightening, the terminal screw may be damaged.
• This instrument does not have a built-in power switch, circuit breaker and fuse.
It is necessary to install a power switch, circuit breaker and fuse near the instrument.
(Recommended fuse: Time-lag fuse, rated voltage 250 V AC, rated current 2 A)
• For a 24 V AC/DC power source, do not confuse polarity when using direct current (DC).
• Do not apply a commercial power source to the DO Sensor which is connected to the input terminal
nor allow the power source to come into contact with the sensor.
• Use the DO Sensor made by OPTEX Co., Ltd.
• Keep the input wires and power lines separate.
Note about the DO Sensor Cable
The DO Sensor cable is a highly-insulated (electrical) cable. Please handle it with utmost care as
follows.
• Do not allow terminals and socket of the DO Sensor cable to come in contact with moisture or oil ofany kind. Likewise, ensure fingers are clean, otherwise the insulation will deteriorate, resulting inunstable indication.
Be sure to keep the cable dry and clean at all times.
If the cable is stained, clean it with alcohol, and dry it completely.
• For calibration or checking/replacement, the DO Sensor cable should be wired with sufficient length.
• Keep the DO Sensor cable and junction cable away from electrical devices, such as motors or theirpower lines from which inductive interference emanates.
Connection
The DO Sensor cable has the following terminals.
Code
Terminal
RS-485 (SENSOR INPUT)
DO Sensor YB (+) input terminal (Blue)
RS-485 (SENSOR INPUT)
DO Sensor YA (-) input terminal (Green)
POWER FOR SENSOR
External power (+) terminal (Red)POWER FOR SENSOR
External power (-) terminal (Black) and DO Sensor shield
White and brown cables of the DO Sensor are not used, so cut them off, and electrically insulate them.
If they come in contact with other terminals, a malfunction will occur.

3. Operation and Maintenance Precautions

Caution• Do not touch live terminals. This may cause an electrical shock or problems in operation.
• Turn the power supply to the instrument OFF when retightening the terminal or cleaning.
Working on or touching the terminal with the power switched ON may result in severe injury or death
due to electrical shock.
• Use a soft, dry cloth when cleaning the instrument.
(Alcohol based substances may tarnish or deface the unit.)• As the display section is vulnerable, be careful not to put pressure on, scratch or strike it with a hard
object.

4

Contents

Page
1. Model ............................................................................................................................................................ 7
1.1 Model ....................................................................................................................................................7
1.2 Model Label ..........................................................................................................................................7
2. Names and Functions of Instrument.............................................................................................................. 8
3. Mounting to and Removal from the Control Panel........................................................................................ 9
3.1 Site Selection........................................................................................................................................9
3.2 External Dimensions (Scale: mm) ........................................................................................................9
3.3 Mounting ...............................................................................................................................................9
3.4 Removal .............................................................................................................................................. 11
4. DO Sensor .................................................................................................................................................. 12
4.1 Contents of Package ...........................................................................................................................12
4.2 Caution when Using DO Sensor .........................................................................................................12
4.3 Name of Sections ................................................................................................................................13
4.4 Attaching the Sensor Cap ...................................................................................................................13
4.5 Installing the DO Sensor .....................................................................................................................14
4.6 Extending DO Sensor Cable ...............................................................................................................15
5. Wiring .......................................................................................................................................................... 16
5.1 Lead Wire Solderless Terminal ...........................................................................................................16
5.2 Terminal Arrangement ........................................................................................................................17
5.3 Wire the Communication Cable ..........................................................................................................19
6. Outline of Key Operation and Setting Groups ............................................................................................. 20
6.1 Outline of Key Operation .....................................................................................................................20
6.2 Setting Groups ....................................................................................................................................20
7. Setup ........................................................................................................................................................... 22
7.1 Turn the Power Supply to the WIL-102-DO ON. .................................................................................22
7.2 DO Concentration Input Group ...........................................................................................................23
7.3 Transmission Output 1 Group .............................................................................................................24
7.4 Transmission Output 2 Group .............................................................................................................25
7.5 EVT1 Action Group .............................................................................................................................26
7.6 EVT2 Action Group .............................................................................................................................31
7.7 EVT3 Action Group .............................................................................................................................31
7.8 EVT4 Action Group .............................................................................................................................31
7.9 EVT5 Action Group .............................................................................................................................31
7.10 EVT6 Action Group ...........................................................................................................................31
7.11 Communication Group ......................................................................................................................32
7.12 Cleansing Group ...............................................................................................................................33
7.13 Basic Function Group........................................................................................................................34
7.14 Self-Check Group .............................................................................................................................38
7.15 Data Clear Group ..............................................................................................................................40
8. Calibration ................................................................................................................................................... 41
8.1 DO Concentration Calibration .............................................................................................................41
8.1.1 Preparation ...............................................................................................................................41
8.1.2 DO Concentration 1-point Calibration Mode .............................................................................41
8.1.3 DO Concentration 2-point Calibration Mode .............................................................................43
8.1.4 Concentration Option Calibration Mode ....................................................................................45
8.2 Transmission Output 1 Adjustment Mode............................................................................................47
8.3 Transmission Output 2 Adjustment Mode............................................................................................48
9. Measurement .............................................................................................................................................. 49
9.1 Starting Measurement .........................................................................................................................49
9.2 Outside Measurement Range .............................................................................................................49
9.3 Error Code ..........................................................................................................................................49
9.4 About Transmission Output 1 and 2 ....................................................................................................50
9.5 EVT1 to EVT6 Outputs........................................................................................................................505

9.6 Sensor Cap Replacement Timer Output .............................................................................................52
9.7 Cleansing Output ................................................................................................................................53
9.8 Forced Cleansing Mode ......................................................................................................................54
10. Communication ......................................................................................................................................... 55
10.1 System Configuration Example .........................................................................................................55
10.2 Setting Method of the Instrument ......................................................................................................56
10.3 Communication Procedure................................................................................................................57
10.4 Shinko Protocol .................................................................................................................................58
10.4.1 Transmission Mode .................................................................................................................58
10.4.2 Command Configuration .........................................................................................................58
10.4.3 Checksum Calculation ............................................................................................................59
10.5 MODBUS Protocol ............................................................................................................................60
10.5.1 Transmission Mode .................................................................................................................60
10.5.2 Data Communication Interval ..................................................................................................60
10.5.3 Message Configuration ...........................................................................................................60
10.5.4 Message Example ..................................................................................................................62
10.6 Communication Command Table ......................................................................................................64
10.6.1 Notes about Setting/Reading Command .................................................................................64
10.6.2 Setting/Reading Command .....................................................................................................65
10.6.3 Read Only Command .............................................................................................................71
10.7 DO Concentration Calibration by Communication Command ...........................................................73
10.7.1 Preparation .............................................................................................................................73
10.7.2 DO Concentration 1-point Calibration Mode ...........................................................................73
10.7.3 DO Concentration 2-point Calibration Mode ...........................................................................75
10.7.4 Concentration Option Calibration Mode ..................................................................................77
10.8 Transmission Output 1 and 2 Adjustment..........................................................................................78
10.8.1 Transmission Output 1 Adjustment Mode ...............................................................................78
10.8.2 Transmission Output 2 Adjustment Mode ...............................................................................78
10.9 Notes on Programming Monitoring Software ....................................................................................79
10.9.1 How to Speed up the Scan Time ............................................................................................79
10.9.2 How to Read the Set Value Changes Made by the Front Keypad Operation ..........................79
11. Specifications ............................................................................................................................................ 80
11.1 Specification of WIL-102-DO .............................................................................................................80
11.1.1 Standard Specifications ..........................................................................................................80
11.1.2 Optional Specifications............................................................................................................85
11.2 DO Sensor Specifications .................................................................................................................85
12. Troubleshooting ......................................................................................................................................... 86
12.1 Error Codes .......................................................................................................................................86
12.2 Solutions to Problems .......................................................................................................................86
12.2.1 Indication.................................................................................................................................86
12.2.2 Key Operation .........................................................................................................................87
12.2.3 Communication .......................................................................................................................88
13. Character Tables ....................................................................................................................................... 89
14. Key Operation Flowchart ......................................................................................................................... 108
15. Maintenance ............................................................................................................................................. 113
15.1 Maintenance ................................................................................................................................... 113
15.2 Periodic Inspection .......................................................................................................................... 113
15.3 Replacement of Consumables (Maintenance Parts) ....................................................................... 113
15.4 Calibration ....................................................................................................................................... 113
15.5 Long-Term Storage ......................................................................................................................... 113
16. Reference Chart ....................................................................................................................................... 114

61. Model
1.1 Model
WIL-102

Input Points

2

Input

-DO

,
2 points

DO

Power supply voltage
OptionOptical DO Sensor
100 to 240 V AC (standard)
1

24 V AC/DC (*)
EVT

EVT

output (EVT3, EVT4, EVT5, EVT 6)(*) Power supply voltage 100 to 240 V AC is standard.
When ordering 24 V AC/DC, enter “1” in Power supply voltage, after ‘DO’.

1.2 Model Label
The model label is attached to the left side of the case.
Model, Option
Development No.
Input indication
Power supply voltage, Power consumption
Serial number
Manufacturer
Factory ID
RoHS directive compliant(Fig. 1.2-1)

7

2. Names and Functions of Instrument
PWR indicator
Unit label (DO concentration)

DO Display

Unit label (Temperature)
Temperature Display
T/R indicator

A1 indicator
A2 indicator

MODE key

UP keyDOWN key

SET/RESET key
Light Sensor(Fig. 2-1)

Displays
DO Display

Temperature
Display
Unit Labels
Unit label(DO concentration)
Unit label(Temperature)
Action Indicators
PWR indicator
A1 indicator
A2 indicator
T/R indicator

In Display Mode, DO Concentration, DO % saturation or Oxygen partialpressure is indicated in red.
In Setting mode, setting characters are indicated in red.
In Display Mode, temperature is indicated in red.
In Setting mode, set value (selected item) is indicated in red.

Attach the user’s unit of DO concentration from the included unit labels ifnecessary.
Attach the user’s unit of temperature from the included unit labels if necessary.

When power supply to the instrument is turned ON, the yellow LED lights up.
When EVT1 output (Contact output 1) is ON, the red LED lights up.
When EVT2 output (Contact output 2) is ON, the yellow LED lights up.
The yellow LED lights up during Serial communication TX output (transmitting).

Keys
UP keyDOWN key
MODE key
SET/RESET key
Light Sensor

Increases the numeric value, or progresses through the selection items.
Switches the Display Mode.
Decreases the numeric value, or progresses back through the selection items.
Selects a group.
Switches the setting modes, and registers the set value (or selected item).
Automatically measures and controls brightness of the DO Display,
Temperature Display and Action indicators.

NoticeWhen setting the specifications and functions of this instrument, connect mains power cable to terminals
13 and 14 first, then set them referring to “6. Outline of Key Operation and Setting Groups” and “7. Setup(pp. 20 to 40)” before performing “3. Mounting to and Removal from the Control Panel (p.9)” and “5.
Wiring (p.16)”.
8

3. Mounting to and Removal from the Control Panel
3.1 Site Selection

CautionUse within the following temperature and humidity ranges.
Temperature: 0 to 50 (32 to 122 ) (No icing), Humidity: 35 to 85 %RH (Non-condensing)If the WIL-102-DO is installed within a control panel, the ambient temperature of the unit – not theambient temperature of the control panel – must be kept under 50 . Otherwise the life of electronicparts (especially electrolytic capacitors) of the unit will be shortened.
This instrument is intended to be used under the following environmental conditions (IEC61010-1):
Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:• A minimum of dust, and an absence of corrosive gases• No flammable, explosive gases• No mechanical vibrations or shocks• No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 ) that does notchange rapidly• An ambient non-condensing humidity of 35 to 85 %RH• No large capacity electromagnetic switches or cables through which large current is flowing• No water, oil, chemicals or the vapors of these substances can come into direct contact with the unit.
3.2 External Dimensions (Scale: mm)
Socket (sold separately)

3

85

DIN rail

30

(29)

79

3.3

108
(Fig. 3.2-1)

3.3 Mounting(1) Hook the upper part of the socket on the DIN rail, and mount it (A clicking sound is heard).
Hook the upper part of thesocket on the DIN rail.

(Fig. 3.3-1)
9

Caution
Before inserting the WIL-102-DO into the socket, wire the unit while referring to Section “5. Wiring”(p.16).
(2) Check that the Lock Release has been lowered.

Lock Release(Fig. 3.3-2)(3) Insert the WIL-102-DO into the socket.

When inserting, be careful about
the position of pins and slots.
(Fig. 3.3-3)(4) Fix the WIL-102-DO and the socket by pushing the Lock Release up.

Check that the WIL-102-DO and the socket
are locked by pushing the Lock Release up.

Lock Release(Fig. 3.3-4)
10

3.4 Removal(1) Turn the power supply to the unit OFF.
(2) Pull the Lock Release down, and release the WIL-102-DO from the socket.
Check that the WIL-102-DO andthe socket are unlocked by pulling
the Lock Release down.

Lock Release(Fig. 3.4-1)(3) Separate the WIL-102-DO from the socket.

(Fig. 3.4-2)(4) Remove the socket from the DIN rail by pulling the socket Lock Release (at the bottomof the socket) down.

Lock Release(Fig. 3.4-3)
11

4. DO Sensor
4.1 Contents of Package
The following items are contained in the DO Sensor package.

DO Sensor (DOS-20)

Sensor cap (DOS-CP)(Fig. 4.1-1)

Calibration container

4.2 Caution when Using DO Sensor

Caution
Do not use the DO Sensor for any purposes other than water quality measurement.
Do not disassemble or modify.
The sensor contains a high voltage component which
may cause fire or electrical shock.
For internal inspection, maintenance or repair, please
consult us or our agency.

(Fig. 4.2-1)
Do not subject the sensor to any rough treatment. Do
not drop the unit. Handle with care.

(Fig. 4.2-2)
Do not touch the measurement section. If it is notclean, wipe it with a clean, soft cloth.

(Fig. 4.2-3)
Be careful not to damage the cable.
Ensure that the cable is not tangled, nor caught ortrapped in any way when installing and using thesensor.
Use a spiral cable wrap to protect the cable.
If the cable is damaged, it may malfunction when
immersed, and fire or electrical shock will occur.
(Fig. 4.2-4)

12

4.3 Name of Sections

Protective coverSensor cap

Detection area

Humidity sensor(Fig. 4.3-1)

Measurement section

4.4 Attaching the Sensor Cap

Caution• Before attaching, make sure that the O-ring of the sensor is not crooked or is in the right position in
the groove.
• Take the sensor cap out from the package just before mounting,and mount it immediately.
• When mounting the sensor cap, keep the dust or water fromentering into the cap.
Otherwise correct measurement will not be performed.
• Date of manufacture is written on the storage case of sensor cap
as the right diagram.
(Fig. 4.4-1)(1) Remove the protective cover from the sensor by rotating it, then remove the red protective cap.
Please carefully set aside the protective cap.

Protective cap

Protective cover(Fig. 4.4-2)(2) Take the provided sensor cap out from the storage case.

(Fig. 4.4-3)(3) Match the arrows on the sensor cap and on the sensor, then push the sensor cap straight onto it
until no gap is visible.

(Fig. 4.4-4)(4) Reattach the protective cover.
13

4.5 Installing the DO Sensor

Caution
Before installation, remove the power supply cable from the power source.
After completion, wire the power supply cable.
The end of DO Sensor cable is equipped with afemale screw (1¼-11 ½NPT) to enable a male screw
to be attached to a severed pipe.
NPT stands for National Pipe Thread Taper (which isa U.S. standard for tapered threads used on threaded
pipes and fittings).
(Fig. 4.5-1)
When installing the DO Sensor, make sure that air
bubbles are not present on and near the detection
surface.
If air bubbles accumulate in the measurement section
area, correct measurement cannot be obtained.

(Fig. 4.5-2)
Do not install the DO Sensor near to any walls or
where water collects.
Correct dissolved oxygen in the tank (for measurement) cannot be measured.
Wall(Fig. 4.5-3)
Install the DO Sensor at a minimum of about 30 cm
below the lowest water surface, taking water levelchanges into consideration.

30 cm minimum(Fig. 4.5-4)

14

Recommendations• As an accessory, the attachment (DA-1), sold separately, is recommended to use in a place
where water currents are fast.
• The following (1) to (4) are included in the immersion holder.
• The Polyvinyl chloride (PVC) pipe (VP-40) is to be supplied by the user.
Stanchion pole (PS-1)

PVC pipe: VP-40(To be supplied by the user)(2) 2-pipe hanger (40A)(3) 2-fitting(*) Recommended(1) 4-U bolt
SUS304 50AxM10(4) Pipe attachment joint
PVC (11/4 - 111/2 inch NPT male screw/40A)(Fig. 4.5-5)

4.6 Extending DO Sensor Cable
DO Sensor cable standard length is 10 m.
To extend the cable, refer to the following diagram.
Use a device such as a pull box if necessary.

Pull box, etc.

Extendable cable length: 1200 m (Nominal cross-section area: 0.2 to 1.25 mm2)

(Fig. 4.6-1)
15

5. Wiring
Warning
Turn the power supply to the instrument off before wiring or checking.
Working on or touching the terminal with the power switched on may result in severe injury
or death due to electrical shock.

Caution• Do not leave wire remnants in the instrument, as they could cause a fire or a malfunction.
• Use a solderless terminal with an insulation sleeve in which the M3 screw fits when wiring the unit.
• Tighten the terminal screw using the specified torque. If excessive force is applied to the screw
when tightening, the terminal screw may be damaged.
• This instrument does not have a built-in power switch, circuit breaker and fuse.
It is necessary to install a power switch, circuit breaker and fuse near the instrument.
(Recommended fuse: Time-lag fuse, rated voltage 250 V AC, rated current 2 A)
• For a 24 V AC/DC power source, do not confuse polarity when using direct current (DC).
• Do not apply a commercial power source to the DO Sensor which is connected to the input terminal
nor allow the power source to come into contact with the sensor.
• Use the DO Sensor made by OPTEX Co., Ltd.
• Keep the input wires and power lines separate.
Note about the DO Sensor Cable
The DO Sensor cable is a highly-insulated (electrical) cable. Please handle it with utmost care as
follows.
• Do not allow terminals and socket of the DO Sensor cable to come in contact with moisture or oil ofany kind. Likewise, ensure fingers are clean, otherwise the insulation will deteriorate, resulting inunstable indication.
Be sure to keep the cable dry and clean at all times.
If the cable is stained, clean it with alcohol, and dry it completely.
• For calibration or checking/replacement, the DO Sensor cable should be wired with sufficient length.
• Keep the DO Sensor cable and junction cable away from electrical devices, such as motors or theirpower lines from which inductive interference emanates.
Connection
The DO Sensor cable has the following terminals.
Code
Terminal
RS-485 (SENSOR INPUT)
DO Sensor YB (+) input terminal (Blue)
RS-485 (SENSOR INPUT)
DO Sensor YA (-) input terminal (Green)
POWER FOR SENSOR
External power (+) terminal (Red)POWER FOR SENSOR
External power (-) terminal (Black) and DO Sensor shield
White and brown cables of the DO Sensor are not used, so cut them off, and electrically insulate them.
If they come in contact with other terminals, a malfunction will occur.
5.1 Lead Wire Solderless Terminal

Manufacturer

Model

Nichifu Terminal

TMEV1.25Y-3S

3.2 mmminimum

Solderless
Terminal
Y-type

5.9 mm max.

Use a solderless terminal with an insulation sleeve in which an M3 screw fits as follows.
The tightening torque should be 0.63 N•m.

4 mm max.

(Fig. 5.1-1)
16

4.8 mm minimum

5.2 Terminal Arrangement
Standard specifications

EVT option

Modular Jack Pin (WIL-102-DO side arrangement)

Modular Jack Pin (WIL-102-DO side arrangement)(Fig. 5.2-1)

Code
DO RS-485 (sensor input)
DO RS-485 (sensor input)
DO POWER FOR SENSOR
DO POWER FOR SENSOR
TRANSMIT OUTPUT1
TRANSMIT OUTPUT2
EVT1
EVT2
EVT3
EVT4
EVT5
EVT6
POWER SUPPLY

RS-485(Fig. 5.2-2)

Description
DO Sensor YB(+) input terminal (Blue)DO Sensor YA(-) input terminal (Green)
External power supply (-) terminal (Black) and DO Sensor shield
External power supply (+) terminal (Red)Transmission output 1
Transmission output 2
EVT1 output (Contact output 1)
EVT2 output (Contact output 2)
EVT3 output (Open collector output 3) (EVT option)
Use the included wire harnesses WJ.
EVT4 output (Open collector output 4) (EVT option)
Use the included wire harnesses WJ.
EVT5 output (Open collector output 5) (EVT option)
Use the included wire harnesses WJ.
EVT6 output (Open collector output 6) (EVT option)
Use the included wire harnesses WJ.
Power supply voltage
100 to 240 V AC or 24 V AC/DC (when “1” is added after the model
name “DO”)
24 V DC: Ensure polarity is correct.
Serial Communication modular jack17

Wiring Example
100 to 240 V AC

Power Supply(12 to 36 V DC)
To be supplied by the user.

8
L

7 6

5

N
4

(Blue)(Green)3 2

1(Red)(Black)

14

–V +V

+ –
Power
Input
terminals
terminals

13– +12 11 10 9
Recorders, etc.

WIL-102-DO

DO Sensor
White and brown cables of
the DO Sensor are not used,
so cut them off, andelectrically insulate them. Ifthey come in contact withother terminals, a malfunction
will occur.

DO Sensor shield
Electrically insulate the DO Sensor shield,
and connect the shield and black wire to (-)
terminal of external power supply.

(Fig. 5.2-3)

Wiring Example of EVT3 to EVT6
If EVT output (EVT option) is ordered, EVT3 to EVT6 output connectors are equipped on the top of this
instrument. Use the included wire harnesses WJ.
Output specifications are shown below.
Open collector control capacity: 0.1 A 24 V DC
Top view (WIL-102-DO)

Interior view (WIL-102-DO)
Alarm unit

Wire harness WJ
EVT6
EVT5
EVT4
EVT3

+

-

DC power supply(Fig. 5.2-4)

18

5.3 Wire the Communication Cable
Connect to the modular jack at the bottom of the instrument, using CDD (sold separately) or CPP(sold separately).
• Wiring Example Using the USB Communication Cable CMC-001-3 (sold separately)
WIL-102-DO (Max. 31 units)

CMC-001-3(sold separately)

Host Computer
USB Port

CDD (sold separately) or CPP (sold separately)

Bottom of WIL-102-DO(Fig. 5.3-1)• Wiring Example Using the Communication Converter IF-400 (sold separately)
IF-400 (sold separately)
WIL-102-DO (Max 31 units)
Shieldwire

FG

Host Computer
D-sub 9-pin Connector

CDD (sold separately) or CPP (sold separately)
Bottom of IF-400, WIL-102-DO(Fig. 5.3-2)
Shield Wire
Be sure to ground only one end of the shield wire so that current cannot flow to the shield wire.
If both ends of the shield wire are grounded, the circuit will be closed, resulting in a ground loop.
This may cause noise. Be sure to ground the FG.
Recommended cable: OTSC-VB 2PX0.5SQ (made by Onamba Co., Ltd.) or equivalent(Use a twisted pair cable.)
Terminator (Terminal Resistor)
The terminator is mounted at the end of the wire when connecting multiple peripheral devices to apersonal computer. The terminator prevents signal reflection and disturbance.
Do not connect a terminator with the communication line because each WIL-102-DO has built-in
pull-up and pull-down resistors.
Communication converter IF-400 (sold separately) has a built-in terminal resistor.
19

6. Outline of Key Operation and Setting Groups
6.1 Outline of Key Operation
Setting items are divided into groups, and group selection has to be made with keypads.
key in Display Mode or Cleansing Output Mode. The unit enters Group Selection Mode.
Press thekey, and press the
key. The unit enters each setting item.
Select a group with theorkey, and register the set value with thekey.
To set each setting item, use thekey is held down for 3 seconds at any setting item, the unit will revert to Display Mode or
If theCleansing Output Mode.
6.2 Setting Groups
Setting groups are indicated on p.21.
[About setting items]
Setting group or setting item in shaded section will be displayed only when the corresponding
option is ordered.
(*1) In Cleansing Output Mode, the measured value (DO concentration, DO % saturation, Oxygen partial pressure,
Temperature) will be held during cleansing action (Cleansing time, Standby after cleansing).
(*2) If errors occur during 1st-point calibration (100% saturation calibration) while in 2-point calibration mode, press theorkey. The unit will revert to Display Mode or Cleansing Output Mode.
(*3) Depending on the selection in [Data clear Stop/Perform], the unit operates as follows.
• If ‘Data clear Stop’ is selected, data will not be cleared. The unit will revert to the mode prior to Data clear Stop (either
Display Mode or Cleansing Output Mode).
• If ‘Data clear Perform’ is selected, data will be cleared. The unit will revert to the mode prior to Data clear Perform(either Display Mode or Cleansing Output Mode). (While data is being cleared, all indications are momentarily unlit.)

About Key Operation•,,: Press the,orkey. The unit will proceed to the next setting item,

illustrated by an arrow.
or: Press theor

key until the desired setting mode appears.

•+(3 sec): Press and hold the
key andkey (in that order) together for
approx. 3 seconds.
The unit will proceed to DO concentration 1-point Calibration mode.

•(3 sec),•+(3 sec): Press and hold the
key andkey (in that order) together for approx. 3
seconds. The unit will proceed to Transmission output 1 Zero adjustment.

•+(3 sec): Press and hold the
key andkey (in that order) together for approx. 3
seconds. The unit will proceed to Transmission output 2 Zero adjustment.

(3 sec): Press the
key orkey for approx. 3 seconds.
The unit will proceed to the next setting mode, illustrated by an arrow.

20

Abbreviations:
Calib.: Calibration Trans.: Transmission

POWER ON
Display Mode or Cleansing Output Mode (*1)
DO Concentration/
DO % Saturation/
Temperature Display Mode
Temperature Display Mode+

Oxygen Partial Pressure/
Temperature Display Mode

(3sec) DO concentration
1-point calibration mode

1-point calibration(100% saturation calib.)

DO concentration
2-point calibration mode

1st-point calibration (*2)
(100% saturation calib.)

Concentration option
calibration mode

Concentration option
auto calibration(3sec)

Forced Cleansing
Mode

After cleansing, automatically proceeds.

+(3sec) Transmission output
1 Zero adjustment

Transmission output
1 Span adjustment+(3sec) Transmission output
2 Zero adjustment

Transmission output
2 Span adjustment

Group Selection
DO concentration
Input Group

2nd-point calibration(0-point calibration)

Item Selection
Signal output
response time

Altitude correction

Transmission Output 1
Group

Transmission output 1
typeTrans. output 1 value
HOLD when calibrating

Transmission Output 2
GroupTransmission output 2
typeTrans. output 2 value
HOLD when calibrating

EVT1 Action Group

EVT1 type

EVT1 hysteresis

EVT2 Action GroupEVT2 type

EVT2 hysteresis

EVT3 Action GroupEVT3 type

EVT3 hysteresis

EVT4 Action Group

EVT4 type

EVT4 hysteresis

EVT5 Action GroupEVT5 type

EVT5 hysteresis

EVT6 Action GroupEVT6 type

EVT6 hysteresis

Communication
Group

Communication
protocolStop bit

Cleansing Group

Cleansing timeStandby after
cleansing

Basic Function GroupSet value lockSensor cap replacement timer remainder

Self-Check Group

LED all lit mode

Input mode

Data Clear Group

Data clear selection

Data clear
Stop/Perform (*3)

21

(3 sec)

7. Setup
Setup should be done before using this instrument according to the user’s conditions:
Setting the DO concentration input, Transmission output 1, Transmission output 2, EVT1, EVT2,
EVT3 to EVT6 (EVT option) types, Communication, Cleansing and Indication settings, etc.
Setup can be conducted in the groups below:
DO Concentration Input Group, Transmission Output 1 Group, Transmission Output 2 Group,
EVT1 to EVT6 Action Groups, Communication Group, Cleansing Group, Basic Function GroupIf the user’s specification is the same as the factory default value of the WIL-102-DO, or if setup has
already been completed, it is not necessary to set up the instrument. Proceed to “8. Calibration (p.41)”.
7.1 Turn the Power Supply to the WIL-102-DO ON.
For approx. 8 seconds after the power is switched ON, the following characters are indicated on the
DO Display and Temperature Display.
Display
Indication
DO Display
Temperature Display[Version number (e.g.) 1.00]
During this time, all outputs are in OFF status, and action indicators except the PWR indicator turn off.
After that, measurement starts, indicating DO concentration, DO % saturation or Oxygen partialpressure on the DO Display, and temperature on the Temperature Display.
This status is called Display Mode or Cleansing Output Mode.
Switching Between Modes
key is pressed, modes (on the DO Display) progress as follows.
Every time the
DO Concentration / Temperature Display Mode
DO % Saturation / Temperature Display Mode
Oxygen Partial Pressure / Temperature Display Mode22

7.2 DO Concentration Input GroupTo enter the DO Concentration Input Group, follow the procedure below.
1
Press thekey once in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit enters the DO Concentration Input Group, and “Signal output response time”
will appear.
Character
Setting Item, Function, Setting Range
Factory Default
Signal output response time
60 seconds• Sets the signal output response time.
Moving average is calculated from the set signal output response time, and theresulting value is updated every Data update cycle (fixed at 5 seconds) as ameasurement value.
Moving average = Signal output response time ・・ Data update cycle (5 sec.)(e.g.) If signal output response time is set to 50 seconds, the Moving average will be:
50/5 = 10 (times)
However, signal output response time setting will be invalidated during DO
concentration calibration mode, Transmission output 1 adjustment mode, orTransmission output 2 adjustment mode.
• Setting range: 5 to 600 seconds
Salinity correction
0 PSU• Sets the salinity concentration correction value.
• Setting range: 0 to 42 PSU
Altitude correction
0m• Sets altitude.
• Setting range: 0 to 5000 m

23

7.3 Transmission Output 1 GroupTo enter the Transmission Output 1 Group, follow the procedure below.
1
Press thekey twice in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit enters Transmission Output 1 Group, and “Transmission output 1 type” willappear.
Character
Setting Item, Function, Setting Range
Factory Default
Transmission output 1 type
DO concentration transmission• Selects Transmission output 1 type.
: DO concentration transmission•: Water temperature transmission: DO % saturation transmission: Oxygen partial pressure transmission
Transmission output 1 high limit
20.00 mg/L
• Sets Transmission output 1 high limit value. (This value correponds to 20 mA DC
output.)If Transmission output 1 high limit and low limit are set to the same value,
Transmission output 1 will be fixed at 4 mA DC.
• Setting range: Transmission output 1 low limit to Measurement range high limit
Transmission output 1 low limit
0.00 mg/L• Sets Transmission output 1 low limit value. (This value correponds to 4 mA DC
output.)If Transmission output 1 high limit and low limit are set to the same value,
Transmission output 1 will be fixed at 4 mA DC.
• Setting range: Measurement range low limit to Transmission output 1 high limit
Transmission output 1 status when calibrating
Last value HOLD
• Selects Transmission output 1 output status when calibrating DO concentration.
• Selection item:: Last value HOLD (Retains the last value before calibrating DO concentration,and outputs it.): Set value HOLD (Outputs the value set in [Transmission output 1 value HOLD
when calibrating].): Measured value (Outputs the measured value when calibrating DO
concentration.)Transmission output 1 value HOLD when
0.00 mg/L
calibrating• Sets Transmission output 1 value HOLD.
(Set value HOLD) is selected in [Transmission output 1• Available only when
status when calibrating].
• Setting range: Measurement range low limit to Measurement range high limit

247.4 Transmission Output 2 GroupTo enter the Transmission Output 2 Group, follow the procedure below.
1
Press thekey 3 times in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit enters Transmission Output 2 Group, and “Transmission output 2 type” willappear.
Character
Setting Item, Function, Setting Range
Factory Default
Transmission output 2 type
DO concentration transmission• Selects Transmission output 2 type.
: DO concentration transmission•: Water temperature transmission: DO % saturation transmission: Oxygen partial pressure transmission
Transmission output 2 high limit
20.00 mg/L
• Sets Transmission output 2 high limit value. (This value correponds to 20 mA DC
output.)If Transmission output 2 high limit and low limit are set to the same value,
Transmission output 2 will be fixed at 4 mA DC.
• Setting range: Transmission output 2 low limit to Measurement range high limit
Transmission output 2 low limit
0.00 mg/L• Sets Transmission output 2 low limit value. (This value correponds to 4 mA DC
output.)If Transmission output 2 high limit and low limit are set to the same value,
Transmission output 2 will be fixed at 4 mA DC.
• Setting range: Measurement range low limit to Transmission output 2 high limit
Transmission output 2 status when calibrating
Last value HOLD
• Selects Transmission output 2 output status when calibrating DO concentration.
• Selection item:: Last value HOLD (Retains the last value before calibrating DO concentration,and outputs it.): Set value HOLD (Outputs the value set in [Transmission output 2 value HOLD
when calibrating].): Measured value (Outputs the measured value when calibrating DO
concentration.)Transmission output 2 value HOLD when
0.00 mg/L
calibrating• Sets Transmission output 2 value HOLD.
(Set value HOLD) is selected in [Transmission output 2• Available only when
status when calibrating].
• Setting range: Measurement range low limit to Measurement range high limit

25

7.5 EVT1 Action GroupTo enter the EVT1 Action Group, follow the procedure below.
1
Press thekey 4 times in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit proceeds to the EVT1 Action Group, and ”EVT1 type“ will appear.
Character
Setting Item, Function, Setting Range
Factory Default
EVT1 type
No action• Selects an EVT1 output type.
Note: If EVT1 type is changed, EVT1 value defaults to 0.00 or 0.0.
•

: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action(Fig. 7.5-1): DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer (Fig. 7.5-3) (p.27): Self-Check output (p.27): Cleansing output (Fig. 7.5-4) (p.27): DO concentration input High/Low limits independent action (Fig.7.5-2) (p.27): Water temperature input High/Low limits independent action (Fig.7.5-2) (p.27): DO % saturation input High/Low limits independent action (Fig.7.5-2) (p.27): Oxygen partial pressure input High/Low limits independent action (Fig.7.5-2) (p.27)• EVT1 Action (Activated based on the indication value.)
DO concentration input high limit
Water temperature input high limit
DO % saturation input high limit
Oxygen partial pressure input high limit

DO concentration input low limit
Water temperature input low limit
DO % saturation input low limit
Oxygen partial pressure input low limit

If Medium Value is selected in [EVT1 hysteresistype]:
EVT1 ON sides

If Medium Value is selected in [EVT1 hysteresistype]:
EVT1 ON sides

ON

ON

OFF

OFF

EVT1 value

EVT1 value

If Reference Value is selected in [EVT1hysteresis type]:
EVT1 OFF side*

If Reference Value is selected in [EVT1hysteresis type]:

EVT1 ON side*

EVT1 ON side*
ON

ON

OFF

OFF

EVT1 value

EVT1 OFF side*

EVT1 value(Fig. 7.5-1)* Setting Example:)] is set to 0, EVT1 output can be turned ON
If [EVT1 ON side (at the value set in [EVT1 value ()].
)] is set to 0, EVT1 output can be turned OFF
If [EVT1 OFF side ()].
at the value set in [EVT1 value (26

DO concentration input High/Low limits independent action
Water temperature input High/Low limits independent action
DO % saturation input High/Low limits independent action
Oxygen partial pressure input High/Low limits independent action
EVT1 hysteresis

EVT1 hysteresis

ON
OFF
EVT1 High/Low limits
independent lower side value

EVT1 value

EVT1 High/Low limits
independent upper side value(Fig. 7.5-2)• Sensor Cap Replacement Timer Output
If the set Sensor cap replacement timer value has elapsed (when sensor cap
replacement timer remainder is “0”), EVT1 output will be turned ON.
ON
EVT1 output
OFF
Sensor cap replacement
timer remainder

0
Time
0

Sensor cap replacement
timer startSensor cap replacement
timer value has elapsed.

(Fig. 7.5-3)• Self-check Output
If the following error occurs, EVT1 output will be turned ON.
Error CodeDescription
DO Sensor communication errors have occurred, or DO
sensor is not connected.
DO Sensor cap is not attached, or it is incorrectly attached.
Calibration error (If input errors have occurred, or if calibration
cannot be performed 30 minutes after starting calibration)• Cleansing Output
After ‘Cleansing inactive interval’ has elapsed, EVT1 output is turned ON during
the configured ‘Cleansing time’.
After ‘Standby after Cleansing’ has passed, this action is repeated.

Cleansing
Stop

Cleansing
Perform

Cleansing
Stop

Cleansing
Perform

Ccy: Cleansing inactive interval
Ctm: Cleansing time
Cit: Standby after cleansing(Fig. 7.5-4)
27

Cleansing
Stop

Cleansing
Perform

Character

Setting Item, Function, Setting Range
EVT1 value

Factory Default
DO concentration input: 0.00 mg/L
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa• Sets EVT1 value.
• Not available for this setting item and all subsequent items if(No action),(Sensor cap replacement timer),(Self-check output), or(Cleansing output) is selected in [EVT1 type].
• Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input:
0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT1 hysteresis type
Reference Value• Selects EVT1 output hysteresis type (Medium or Reference Value).
(DO concentration input High/Low limits independent action),• Not available if(Water temperature input High/Low limits independent action),(DO %saturation input High/Low limits independent action) or(Oxygen partial pressure
input High/Low limits independent action) is selected in [EVT1 type].
•: Medium Value
Sets the same value for both ON and OFF sides in relation to EVT1 value.
Only ON side needs to be set.
: Reference Value
Sets individual values for ON and OFF sides in relation to EVT1 value.
Both ON and OFF sides need to be set individually.
DO concentration input: 0.01 mg/L
EVT1 ON side
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa• Sets the span of EVT1 ON side.
If(Medium Value) is selected in [EVT1 hysteresis type], the span of ON/OFFside will be the same value.
(DO concentration input High/Low limits independent action),• Not available if(Water temperature input High/Low limits independent action),(DO %saturation input High/Low limits independent action) or(Oxygen partial pressure
input High/Low limits independent action) is selected in [EVT1 type].
• Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
DO concentration input: 0.01 mg/L
EVT1 OFF side
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa• Sets the span of EVT1 OFF side.
• Not available if(Medium Value) is selected in [EVT1 hysteresis type].
• Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa

28

Character

Setting Item, Function, Setting Range
Factory Default
EVT1 ON delay time
0 seconds• Sets EVT1 ON delay time.
The EVT1 output does not turn ON (under the conditions of turning ON) until the time
set in [EVT1 ON delay time] elapses.
• Setting range: 0 to 9999 seconds
EVT1 OFF delay time
0 seconds• Sets EVT1 OFF delay time.
The EVT1 output does not turn OFF (under the conditions of turning OFF) until the time
set in [EVT1 OFF delay time] elapses.
• Setting range: 0 to 9999 seconds
Output ON time when EVT1 output ON
0 seconds• Sets Output ON time when EVT1 output is ON.
If ON time and OFF time are set, EVT1 output can be turned ON/OFF in a configured
cycle when EVT1 output is turned ON. (Fig. 7.5-5)• Setting range: 0 to 9999 seconds
Output OFF time when EVT1 output ON
0 seconds• Sets Output OFF time when EVT1 output is ON.
If ON time and OFF time are set, EVT1 output can be turned ON/OFF in a configured
cycle when EVT1 output is turned ON. (Fig. 7.5-5)• Setting range: 0 to 9999 seconds• Timing chart (Output ON time and OFF time when EVT1 output is ON)
ON
Actual EVT1 output
OFF

ON time is turned
OFF, caused by theactual EVT1 output
turning OFF.

ON
EVT1 output towhich ON time and
OFF time are set. OFF
ON
time

OFF
time

ON
time

OFF
time

ON
time

(Fig. 7.5-5)
EVT1 High/Low limits independent
DO concentration input: 0.00 mg/L
lower side value
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa• Sets the lower side value of EVT1 High/Low limits independent action.
• Available when
(DO concentration input High/Low limits independent action),(Water temperature input High/Low limits independent action),(DO %saturation input High/Low limits independent action) or(Oxygen partialpressure input High/Low limits independent action) is selected in [EVT1 type].
• Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa

29Character

Setting Item, Function, Setting Range
EVT1 High/Low limits independent
upper side value

Factory Default
DO concentration input: 0.00 mg/L
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa• Sets the upper side value of EVT1 High/Low limits independent action.
• Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT1 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa• Sets hysteresis of EVT1 High/Low limits independent action.
• Setting range:
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa

30

7.6 EVT2 Action GroupTo enter EVT2 Action Group, follow the procedure below.
1
Press thekey 5 times in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit proceeds to EVT2 Action Group, and ”EVT2 type“ appears.
Action, indication condition and setting range of EVT2 Action Group are the same as
those of EVT1 Action Group.
Substitute EVT1 with EVT2 ( with ), and refer to EVT1 Action Group (pp. 26 to 30).
(e.g.)
7.7 EVT3 Action Group
Available when EVT output (EVT option) is ordered.
To enter EVT3 Action Group, follow the procedure below.
1
Press thekey 6 times in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit proceeds to EVT3 Action Group, and ”EVT3 type“ appears.
Action, indication condition and setting range of EVT3 Action Group are the same as
those of EVT1 Action Group.
Substitute EVT1 with EVT3 ( with ), and refer to EVT1 Action Group (pp. 26 to 30).
(e.g.)
7.8 EVT4 Action Group
Available when EVT output (EVT option) is ordered.
To enter EVT4 Action Group, follow the procedure below.
1
Press thekey 7 times in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit proceeds to EVT4 Action Group, and ”EVT4 type“ appears.
Action, indication condition and setting range of EVT4 Action Group are the same as
those of EVT1 Action Group.
Substitute EVT1 with EVT4 ( with ), and refer to EVT1 Action Group (pp. 26 to 30).
(e.g.)
7.9 EVT5 Action Group
Available when EVT output (EVT option) is ordered.
To enter the EVT5 Action Group, follow the procedure below.
1
Press thekey 8 times in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit proceeds to EVT5 Action Group, and ”EVT5 type“ appears.
Action, indication condition and setting range of EVT5 Action Group are the same as
those of EVT1 Action Group.
Substitute EVT1 with EVT5 ( with ), and refer to EVT1 Action Group (pp. 26 to 30).
(e.g.)
7.10 EVT6 Action Group
Available when EVT output (EVT option) is ordered.
To enter the EVT6 Action Group, follow the procedure below.
1
Press thekey 9 times in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit proceeds to EVT6 Action Group, and ”EVT6 type“ appears.
Action, indication condition and setting range of EVT6 Action Group are the same as
those of EVT1 Action Group.
Substitute EVT1 with EVT6 ( with ), and refer to EVT1 Action Group (pp. 26 to 30).
(e.g.)
31

7.11 Communication GroupTo enter the Communication Group, follow the procedure below.
1

2Character

Press thekey 6 times in Display Mode or Cleansing Output Mode.
If EVT output (EVT option) is ordered, press thekey 10 times in Display Modeor Cleansing Output Mode.
Press thekey.
The unit enters the Communication Group, and “Communication protocol” will appear.
Setting Item, Function, Setting Range
Factory Default
Communication protocol
Shinko protocol• Selects the communication protocol.
•: Shinko protocol: MODBUS ASCII mode
: MODBUS RTU mode
Instrument number0• Sets the instrument number. (The instrument numbers should be set one by one when
multiple instruments are connected.)• Setting range: 0 to 95
Communication speed
9600 bps• Selects a communication speed equal to that of the host computer.
•: 9600 bps: 19200 bps: 38400 bps
Data bit/Parity
7 bits/Even• Selects data bit and parity.
•: 8 bits/No parity: 7 bits/No parity: 8 bits/Even: 7 bits/Even: 8 bits/Odd: 7 bits/Odd
Stop bit
1 bit• Selects the stop bit.
•
: 1 bit: 2 bits

32

7.12 Cleansing GroupTo enter the Cleansing Group, follow the procedure below.
1
Press thekey 7 times in Display Mode or Cleansing Output Mode.
key 11 times in Display Mode
If EVT output (EVT option) is ordered, press theor Cleansing Output Mode.
2
Press thekey.
The unit enters the Cleansing Group, and “Cleansing time” will appear.
Character

Setting Item, Function, Setting Range

Factory Default
30 seconds

Cleansing time
• Sets the time to perform cleansing. (Fig. 7.12-1)• Setting range: 10 to 120 seconds
Cleansing inactive interval
OFF (None)• Sets the cleansing inactive interval. (Fig. 7.12-1)• Setting range:(None), 10 to 240 minutes
Standby after cleansing
0 seconds• Sets standby time after cleansing action. (Fig. 7.12-1)• Setting range: 0 to 60 seconds• Cleansing Function
The selected EVT output is turned ON during ‘cleansing time’ after ‘Cleansing inactive interval’ haselapsed.
After ‘Standby after cleansing’ has passed, the above action is repeated.
While cleansing action is performing using ‘Cleansing time’ and ‘Standby after cleansing’, other
outputs are in OFF status.
Measured value (DO concentration, DO % saturation, Oxygen partial pressure, Water temperature)
will be retained.
Normal programmed action will be performed, except during Cleansing Perform action.
If the power is turned on again, starts from ‘Cleansing inactive interval’.
Cleansing Output Action

Cleansing
Stop

Cleansing
Perform

Ccy: Cleansing inactive interval
Ctm: Cleansing time
Cit: Standby after cleansing

Cleansing
Stop

Cleansing
Perform

Cleansing
Stop

Cleansing
Perform(Fig. 7.12-1)• If(Cleansing output) is selected in any other [EVT type] during cleansing action, thecurrent setting values (Cleansing time, Standby after cleansing, Cleansing inactive interval) will be
used for the selected cleansing output.
If cleansing action (caused by cleansing cycle) is activated in calibration mode, cleansing action will
not be performed in the current session.
• If(None) is selected in [Cleansing inactive interval], or if any item except(Cleansing output) is selected in [EVT type], Cleansing Output Mode will end, and the unit will revert
to Display Mode.
33

7.13 Basic Function GroupTo enter the Basic Function Group, follow the procedure below.
1
Press thekey 8 times in Display Mode or Cleansing Output Mode.
key 12 times in Display Mode
If EVT output (EVT option) is ordered, press theor Cleansing Output Mode.
2
Press thekey.
The unit enters the Basic Function Group, and the “Set value lock” will appear.
Character

Setting Item, Function, Setting Range

Factory Default
Unlock

Set value lock
• Locks the set values to prevent setting errors.
•(Unlock): All set values can be changed.
(Lock 1): None of the set values can be changed.
(Lock 2): Only EVT1 to EVT6 values can be changed.
(Lock 3): All set values can be temporarily changed.
However, they revert to their previous value after the power is turned
off because they are not saved in the non-volatile IC memory.
Do not change setting items (EVT1, EVT2, EVT3, EVT4, EVT5, EVT6
types). If they are changed, they will affect other setting items.
Be sure to select Lock 3 when changing the set value frequently via
software communication. (If a value set via software communication is
the same as the value before the setting, the value will not be written
in non-volatile IC memory.)
Auto-light function
Disabled• Selects Auto-light Enabled/Disabled.
•: Disabled: Enabled
Indication time
00.00 (Remains lit)
• Sets the indication time of the displays after the last key operation until displays turnoff while in Display Mode or Cleansing Output Mode.
Displays remain lit when set to 00.00.
Displays light up when any key is pressed while in unlit status.
• Setting range: 00.00 (Remains lit.)
00.01 to 60.00 (Minutes.Seconds)
EVT output when input errors occur
Disabled• If input errors occur, EVT output can be Enabled or Disabled.
If “Enabled” is selected, EVT output will be maintained when input errors occur.
If “Disabled” is selected, EVT output will be turned OFF when input errors occur.
• Available when the following type is selected in [EVT type]:(DO concentration input high limit action)(DO concentration input low limit action)(Water temperature input high limit action)(Water temperature input low limit action)(DO % saturation input high limit action)(DO % saturation input low limit action)(Oxygen partial pressure input high limit action)(Oxygen partial pressure input low limit action)• Selection item:: Enabled: Disabled
EVT1 value
365 days• Sets EVT1 value (Sensor cap replacement timer).
Available when(Sensor cap replacement timer) is selected in [EVT1 type].
• Setting range: 0 to 1095 days
34

Character

Setting Item, Function, Setting Range

Factory Default
0 seconds

EVT1 ON delay time
• Sets EVT1 ON delay time.
The EVT1 output does not turn ON after the input value exceeds the EVT1 (Sensor
cap replacement timer) value until the time set in [EVT1 ON delay time] elapses.
• Available when(Sensor cap replacement timer) is selected in [EVT1 type].
• Setting range: 0 to 9999 seconds
EVT1 OFF delay time
0 seconds• Sets EVT1 OFF delay time.
The EVT1 output does not turn OFF after the input value exceeds the EVT1 (Sensor
cap replacement timer) value until the time set in [EVT1 OFF delay time] elapses.
(Sensor cap replacement timer) is selected in [EVT1 type].
• Available when
• Setting range: 0 to 9999 seconds
EVT2 value
365 days• Sets EVT2 value (Sensor cap replacement timer).
(Sensor cap replacement timer) is selected in [EVT2 type].
Available when
• Setting range: 0 to 1095 days
EVT2 ON delay time
0 seconds• Sets EVT2 ON delay time.
The EVT2 output does not turn ON after the input value exceeds the EVT2 (Sensor
cap replacement timer) value until the time set in [EVT2 ON delay time] elapses.
(Sensor cap replacement timer) is selected in [EVT2 type].
• Available when
• Setting range: 0 to 9999 seconds
EVT2 OFF delay time
0 seconds• Sets EVT2 OFF delay time.
The EVT2 output does not turn OFF after the input value exceeds the EVT2 (Sensor
cap replacement timer) value until the time set in [EVT2 OFF delay time] elapses.
(Sensor cap replacement timer) is selected in [EVT2 type].
• Available when
• Setting range: 0 to 9999 seconds
EVT3 value
365 days• Sets EVT3 value (Sensor cap replacement timer).
• Available when EVT output (EVT option) is ordered.
(Sensor cap replacement timer) is selected in [EVT3 type].
Available when
• Setting range: 0 to 1095 days
EVT3 ON delay time
0 seconds• Sets EVT3 ON delay time.
The EVT3 output does not turn ON after the input value exceeds the EVT3 (Sensor
cap replacement timer) value until the time set in [EVT3 ON delay time] elapses.
• Available when EVT output (EVT option) is ordered.
(Sensor cap replacement timer) is selected in [EVT3 type].
Available when
• Setting range: 0 to 9999 seconds
EVT3 OFF delay time
0 seconds• Sets EVT3 OFF delay time.
The EVT3 output does not turn OFF after the input value exceeds the EVT3 (Sensor
cap replacement timer) value until the time set in [EVT3 OFF delay time] elapses.
• Available when EVT output (EVT option) is ordered.
(Sensor cap replacement timer) is selected in [EVT3 type].
Available when
• Setting range: 0 to 9999 seconds

35

Character

Setting Item, Function, Setting Range

Factory Default
365 days

EVT4 value• Sets EVT4 value (Sensor cap replacement timer).
• Available when EVT output (EVT option) is ordered.
Available when(Sensor cap replacement timer) is selected in [EVT4 type].
• Setting range: 0 to 1095 days
EVT4 ON delay time
0 seconds• Sets EVT4 ON delay time.
The EVT4 output does not turn ON after the input value exceeds the EVT4 (Sensor
cap replacement timer) value until the time set in [EVT4 ON delay time] elapses.
• Available when EVT output (EVT option) is ordered.
(Sensor cap replacement timer) is selected in [EVT4 type].
Available when
• Setting range: 0 to 9999 seconds
EVT4 OFF delay time
0 seconds• Sets EVT4 OFF delay time.
The EVT4 output does not turn OFF after the input value exceeds the EVT4 (Sensor
cap replacement timer) value until the time set in [EVT4 OFF delay time] elapses.
• Available when EVT output (EVT option) is ordered.
(Sensor cap replacement timer) is selected in [EVT4 type].
Available when
• Setting range: 0 to 9999 seconds
EVT5 value
365 days• Sets EVT5 value (Sensor cap replacement timer).
• Available when EVT output (EVT option) is ordered.
(Sensor cap replacement timer) is selected in [EVT5 type].
Available when
• Setting range: 0 to 1095 days
EVT5 ON delay time
0 seconds• Sets EVT5 ON delay time.
The EVT5 output does not turn ON after the input value exceeds the EVT5 (Sensor
cap replacement timer) value until the time set in [EVT5 ON delay time] elapses.
• Available when EVT output (EVT option) is ordered.
(Sensor cap replacement timer) is selected in [EVT5 type].
Available when
• Setting range: 0 to 9999 seconds
EVT5 OFF delay time
0 seconds• Sets EVT5 OFF delay time.
The EVT5 output does not turn OFF after the input value exceeds the EVT5 (Sensor
cap replacement timer) value until the time set in [EVT5 OFF delay time] elapses.
• Available when EVT output (EVT option) is ordered.
(Sensor cap replacement timer) is selected in [EVT5 type].
Available when
• Setting range: 0 to 9999 seconds

36

Character

Setting Item, Function, Setting Range

Factory Default
365 days

EVT6 value• Sets EVT6 value (Sensor cap replacement timer).
• Available when EVT output (EVT option) is ordered.
Available when(Sensor cap replacement timer) is selected in [EVT6 type].
• Setting range: 0 to 1095 days
EVT6 ON delay time
0 seconds• Sets EVT6 ON delay time.
The EVT6 output does not turn ON after the input value exceeds the EVT6 (Sensor
cap replacement timer) value until the time set in [EVT6 ON delay time] elapses.
• Available when EVT output (EVT option) is ordered.
Available when(Sensor cap replacement timer) is selected in [EVT6 type].
• Setting range: 0 to 9999 seconds
EVT6 OFF delay time
0 seconds• Sets EVT6 OFF delay time.
The EVT6 output does not turn OFF after the input value exceeds the EVT6 (Sensor
cap replacement timer) value until the time set in [EVT6 OFF delay time] elapses.
• Available when EVT output (EVT option) is ordered.
(Sensor cap replacement timer) is selected in [EVT6 type].
Available when
• Setting range: 0 to 9999 seconds
Sensor cap replacement timer remainder
365 days• Indicates the remaining time of the sensor cap replacement timer.
• Setting range: 0 to 1095 days

37

7.14 Self-Check GroupTo enter the Self-Check Group, follow the procedure below.
1
Press thekey 9 times in Display Mode or Cleansing Output Mode.
key 13 times in Display Mode or
If EVT output (EVT option) is ordered, press the
Cleansing Output Mode.
2
Press thekey.
The unit enters the Self-Check Group, and “LED all lit mode” will appear.
key is pressed, modes progress as follows.
Every time thekey is held down for approx. 3 seconds in any setting mode, the unit will revert to the
If theDisplay Mode or Cleansing Output Mode.
Self-Check Group
LED all lit mode
LED individual lit mode
Key input mode
Output mode
Input mode
Following is a description of each mode.
Mode
Description
LED all lit mode
All indications light up.
All displays and action indicators light up.
LED individual lit Each segment lights up sequentially every 0.5 seconds, in a cycle, as shownmode
below.
1

2

•••••

Order

1

Contents‘a’ segment of DO Display, Temperature Display

1‘b’ segment of DO Display, Temperature Display

2‘c’ segment of DO Display, Temperature Display

3‘d’ segment of DO Display, Temperature Display

4‘e’ segment of DO Display, Temperature Display

5‘f’ segment of DO Display, Temperature Display

6‘g’ segment of DO Display, Temperature Display

7‘dp’ segment of DO Display, Temperature Display

8
9
10
11

11

A1
A2
T/R

A1 indicator
A2 indicator
T/R indicator
38

Mode
Key input mode

Output mode

Input mode

Description
Characters allocated to each key are indicated.
The DO Display indicates, and the Temperature Display indicates thefollowing characters.
If 2 or more keys are pressed simultaneously,
will be indicated.
Temperature
Key Input
Display
When no key is pressed
When thekey is pressed
When thekey is pressed
When 2 or more keys are pressed simultaneously
Each EVT output is turned ON.
Transmission output 1 and 2 output 20 mA DC.
The DO Display indicates, and the Temperature Display indicates thefollowing characters.
Every time thekey is pressed, each output is turned ON sequentially after
being checked.
Temperature
OutputDisplay
All EVT outputs OFF
Transmission output 1 and 2: 4 mA DC
EVT1 output ON
EVT2 output ON
EVT3 output ON
EVT4 output ON
EVT5 output ON
EVT6 output ON
Transmission output 1: 20 mA DC
Transmission output 2: 20 mA DC
Indicates each input.
Every time thekey is pressed, input checking is performed, and the DO
Display indicates corresponding input characters, and the Temperature Display
indicates corresponding measured value.
DO Display
Temperature Display
DO concentration measured value
Water temperature measured value
DO % saturation measured value
Oxygen partial pressure measured value
Sensor cap serial number
If a communication error has occurred, or if the DO Sensor is not connected, theTemperature Display indicates.
If the DO Sensor cap is not attached, or it is incorrectly attached, theTemperature Display indicates.
Sensor cap serial number consists of 6 digits. Since Temperature Display of this
instrument has 4 digits, the DO Display indicates upper 2 figures,and the Temperature Display indicates the remaining 4 digits.
(e.g.) When serial number is 123456, it is alternately indicated as follows.

39

7.15 Data Clear GroupTo enter the Data Clear Group, follow the procedure below.
1
Press thekey 10 times in Display Mode or Cleansing Output Mode.
key 14 times in Display Mode
If EVT output (EVT option) is ordered, press theor Cleansing Output Mode.
2
Press thekey.
The unit enters the Data Clear group, and the “Data clear selection” will appear.
Character
Setting Item, Function, Setting Range
Factory Default
Data clear selection
Calibration value• Selects either Calibration value or Set value to clear.
•: Calibration value: Set value
Data clear Stop/Perform
Data clear Stop
• Selects Data clear Stop/Perform.
•: Data clear Stop
: Data clear Perform
Depending on the selection in [Data clear Stop/Perform], the unit operates as shown below.
• When ‘Data clear Stop’ is selected:
Data clearing is not executed, and the unit returns to the mode prior to Data clear Stop(either Display Mode or Cleansing Output Mode).
• When ‘Data clear Perform’ is selected:
Data is cleared. The unit returns to the mode prior to Data clear Perform (either Display
Mode or Cleansing Output Mode).
(While data is being cleared, all indications are momentarily unlit.)408. Calibration
The following are descriptions for DO concentration 1-point calibration mode, DO concentration 2-pointcalibration mode, Concentration option calibration mode, Transmission output 1 and 2 adjustment modes.
8.1 DO Concentration Calibration

8.1.1 Preparation(1) Clean the DO Sensor body and measurement section, and remove all moisture.
(2) Remove the storage cap of the calibration container,
and replace with a calibration cap (ventilating cap).

Calibration cap Storage cap(Fig. 8.1.1-1)(3) Keep the water, used for DO Sensor and calibration, at room temperature for approx. 30
minutes.
(4) Select a mode from Sections 8.1.2 (DO Concentration 1-point Calibration Mode), 8.1.3 (DOConcentration 2-point Calibration Mode), and 8.1.4 (Concentration Option Calibration Mode),and perform calibration.

8.1.2 DO Concentration 1-point Calibration Mode

Caution• If salinity concentration has been previously corrected, return the salinity concentration correction
value to 0 PSU, then start calibration.
Refer to [Salinity correction (p.23)].
If calibration is performed with previously corrected salinity concentration, an error will occur, or
calibration will not be performed normally.
• When using a sensor in geographically high elevation sites, perform altitude correction for accurate
calibration, then start calibration.
Refer to [Altitude correction (p.23)].
The unit cannot enter DO concentration 1-point calibration mode in the following cases.
(Lock 1),
(Lock 2) or(Lock 3) is selected in [Set value lock (p.34)]• When(Cleansing output) is selected in any of [EVT1 to EVT6 types (pp. 26, 31)], and while• Whencleansing action is performing using the ‘Cleansing time’ and ‘Standby after cleansing’• When the following errors have occurred.
Error CodeDescription
Non-volatile IC memory error
DO Sensor communication errors have occurred, or DO Sensor is not connected.
DO Sensor cap is not attached, or it is incorrectly attached.

41

The following outlines calibration procedure.
(1) Pour approx. 10 mL of ion-exchanged water into the calibration container sponge.
(2) Insert the DO Sensor into the calibration container until the measurement section of the sensor
is situated approximately 2 cm away from the sponge.
Approx. 2 cm

(Fig. 8.1.2-1)(3) Allow it to settle, undisturbed, for 5 to 10 minutes.

Caution• Do not leave the sensor attached to the calibration container for more than 30 minutes. This
will result in dew condensation in measurement section, which will affect measurement value.
If dew condensation has occured, remove the moisture from the measurement section, thenstart calibration again.
(4) Press and hold theandkey (in that order) together for approx. 3 seconds in Display
Mode or Cleansing Output Mode.
The unit moves to DO concentration 1-point calibration mode, and indicates the following.
Display
Indication Contents
DO Display
DO concentration measured value
Temperature Display(5) Press thekey.
1-point calibration (100% saturation calibration) starts.
During calibration, the measurement value on the DO Display flashes.
Display
Indication Contents
DO Display
DO concentration measured value flashes.
Temperature Display(6) Wait at least 10 seconds to stabilize the DO concentration measured value.
key.
(7) Press the
The measured value will be fixed, and automatic calibration will be performed.
After calibration is finished, Displays show the following.
Display
Indication Contents
DO Display
Temperature Display
1-point calibration (100% saturation calibration) is completed.
(8) Press thekey.
The unit returns to DO concentration 1-point calibration mode.
If calibration cannot be performed during 1-point calibration (100% saturation calibration) due tounstable DO concentration input or temperature correction error, etc., the DO Display turns off,.
and the Temperature Display indicatesorkey.
To release the error code, press the42

8.1.3 DO Concentration 2-point Calibration Mode

Caution• When using a sensor in geographically high elevation sites, perform altitude correction for
accurate calibration, then start calibration.
Refer to [Altitude correction (p.23)].
The unit cannot enter DO concentration 2-point calibration mode in the following cases.
(Lock 1),
(Lock 2) or(Lock 3) is selected in [Set value lock (p.34)]• When(Cleansing output) is selected in any of [EVT1 to EVT6 types (pp. 26, 31)], and while• Whencleansing action is performing using the ‘Cleansing time’ and ‘Standby after cleansing’.
• When the following errors have occurred
Error CodeDescription
Non-volatile IC memory error
DO Sensor communication errors have occurred, or DO Sensor is notconnected.
DO Sensor cap is not attached, or it is incorrectly attached.
The following outlines calibration procedure.
(1) Pour approx. 10 mL of ion-exchanged water into the calibration container sponge.
(2) Insert the DO Sensor into the calibration container until the measurement section of the sensor
is situated approximately 2 cm away from the sponge.
Approx. 2 cm

(Fig. 8.1.3-1)(3) Allow it to settle, undisturbed, for 5 to 10 minutes.

Caution• Do not leave the sensor attached to the calibration container for more than 30 minutes. This
will result in dew condensation in measurement section, which will affect measurement value.
If dew condensation has occured, remove the moisture from the measurement section, thenstart calibration again.
(4) Press and hold theandkey (in that order) together for approx. 3 seconds in
Display Mode or Cleansing Output Mode.
key.
(5) Press the
The unit moves to DO concentration 2-point calibration mode, and indicates the following.
Display
DO Display
Temperature Display

Indication Contents
DO concentration measured value

43

key.
(6) Press thest
1 -point calibration (100% saturation calibration) starts.
During calibration, the measurement value on the DO Display flashes.
Display
Indication Contents
DO Display
DO concentration measured value flashes.
Temperature Display(7) Wait at least 10 seconds to stabilize the DO concentration measured value.
key.
(8) Press the
The measured value will be fixed, and automatic calibration will be performed.
After 1st-point calibration (100% saturation calibration) is finished, Displays show the following.
Display
Indication Contents
DO Display
Temperature Display(9) Prepare a Zero standard solution.
Zero standard solution is 100 mL of ion-exchanged water into which 5 g or more of sodium
sulfite has been added and completely dissolved.
(10) Take out the calibration container sponge used for 1st-point calibration, and pour the Zerostandard solution into the calibration container up to the Fill Line.

(Fig. 8.1.3-2)(11) Insert the temperature sensor of the DO Sensor until it is immersed in the prepared Zerostandard solution.

Caution• Insert the measurement section so that approximately 1 cm of gap is left between it andthe bottom of the calibration container.
• Insert the measurement section so that air bubbles cannot attach to it.
(12) Allow it to settle, undisturbed, for at least 5 minutes to stabilize the temperature.
(13) Press thekey.
2nd-point calibration (0-point calibration) starts.
During calibration, the measurement value on the DO Display flashes.
Display
Indication Contents
DO Display
DO concentration measured value flashes.
Temperature Display

44

(14) Wait at least 10 seconds to stabilize the DO concentration measured value.
(15) Press thekey.
The measured value will be fixed, and automatic calibration will be performed.
After 2nd-point calibration (0-point calibration) is finished, Displays show the following.
Display
Indication Contents
DO Display
Temperature Display
2-point calibration (both 100% saturation calibration and 0-point calibration) is completed.
key.
(16) Press the
The unit returns to DO concentration 2-point calibration mode.
If calibration cannot be performed during DO concentration 2-point calibration due to unstable
DO concentration input or temperature correction error, etc., the DO Display turns off, and.
the Temperature Display indicatesorkey.
To release the error code, press the

8.1.4 Concentration Option Calibration Mode
Immerse the DO Sensor in an aqueous solution (of which DO concentration is known), then themeasurement value can be matched to the concentration.
Factory default value: 0.00 mg/L
DO concentration can be set within a range of 0.00 to 20.00 mg/L.
The unit cannot enter Concentration option calibration mode in the following cases.
(Lock 1),
(Lock 2) or(Lock 3) is selected in [Set value lock (p.34)]• When(Cleansing output) is selected in any of [EVT1 to EVT6 types (pp. 26, 31)], and while• Whencleansing action is performing using the ‘Cleansing time’ and ‘Standby after cleansing’.
• When the following errors have occurred.
Error CodeDescription
Non-volatile IC memory error
DO Sensor communication errors have occurred, or DO Sensor is not connected.
DO Sensor cap is not attached, or it is incorrectly attached.
The following outlines calibration procedure (Setting to a concentration of 7.77 mg/L).
(1) Pour the already-known concentration solution into the calibration container up to the Fill Line.

(Fig. 8.1.4-1)(2) Insert the temperature sensor of the DO Sensor until it is immersed in the poured solution.

Caution• Insert the measurement section so that approximately 1 cm of gap is left between it andthe bottom of the calibration container.
• Insert the measurement section without air bubbles being attached.
45

(3) Allow it to settle, undisturbed, for at least 5 minutes to stabilize the temperature.
(4) Press and hold theandkey (in that order) together for approx. 3 seconds in Display
Mode or Cleansing Output Mode.
key twice.
(5) Press the
The unit moves to Concentration option calibration mode, and indicates the following.
Display
Indication Contents
DO Display
Temperature Display
Concentration desired value(6) Set the concentration desired value (7.77) with theorkey, and press the
The following will be indicated.
Display
Indication Contents
DO Display
DO concentration measured value flashes.
Temperature Display(7) Press thekey.
The measured value will be fixed, and calibration will be performed.
If concentration option calibration is finished, Displays show the following.
Display
Indication Contents
DO Display
Temperature Display
Concentration option calibration is completed.
(8) Press thekey.
The unit reverts to Concentration option calibration mode.
key.
(9) Press the
The unit reverts to Display Mode or Cleansing Output Mode.
If errors occur during concentration option calibration, the DO Display will turn off, and the.
Temperature Display will indicateorkey.
To release the error code, press the

46

key.

8.2 Transmission Output 1 Adjustment Mode
Fine adjustment of Transmission output 1 is performed.
The WIL-102-DO is adjusted at the factory, however, differences may occur between the indication
value of the connected equipment (recorders, etc.) and output value of this instrument.
In this case, perform Transmission output 1 Zero adjustment and Span adjustment.
The unit cannot enter Transmission output 1 Zero adjustment mode in the following cases.
(Lock 1),
(Lock 2) or(Lock 3) is selected in [Set value lock (p.34)]• When(Cleansing output) is selected in any of [EVT1 to EVT6 types (pp. 26, 31)], and• Whencleansing action is performing using the ‘Cleansing time’ and ‘Standby after cleansing’• During DO concentration calibration
The following outlines the procedure for Transmission output 1 adjustment.
andkey (in that order) together for approx. 3 seconds in Display(1) Press and hold theMode or Cleansing Output Mode.
(2) The unit enters Transmission output 1 Zero adjustment mode, and indicates the following.
Display
Indication Contents
DO Display
Temperature Display
Transmission output 1 Zero adjustment valueor(3) Set Transmission output 1 Zero adjustment value with thethe value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 1 spankey, while viewing

key.
(4) Press the
The unit enters Transmission output 1 Span adjustment mode, and indicates the following.
Display
Indication Contents
DO Display
Temperature Display
Transmission output 1 Span adjustment valueor(5) Set Transmission output 1 Span adjustment value with thethe value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 1 span
Transmission output 1 adjustment is completed.
key.
(6) Press the
The unit reverts to Display Mode or Cleansing Output Mode.

47

key, while viewing

8.3 Transmission Output 2 Adjustment Mode
Fine adjustment of Transmission output 2 is performed.
The WIL-102-DO is adjusted at the factory, however, differences may occur between the indication
value of the connected equipment (recorders, etc.) and output value of this instrument.
In this case, perform Transmission output 2 Zero adjustment and Span adjustment.
The unit cannot enter Transmission output 2 Zero adjustment mode in the following cases.
(Lock 1),
(Lock 2) or(Lock 3) is selected in [Set value lock (p.34)]• When(Cleansing output) is selected in any of [EVT1 to EVT6 types (pp. 26, 31)], and• Whencleansing action is performing using the ‘Cleansing time’ and ‘Standby after cleansing’• During DO concentration calibration
The following outlines the procedure for Transmission output 2 adjustment.
andkey (in that order) together for approx. 3 seconds in Display(1) Press and hold theMode or Cleansing Output Mode.
(2) The unit enters Transmission output 2 Zero adjustment mode, and indicates the following.
Display
Indication Contents
DO Display
Temperature Display
Transmission output 2 Zero adjustment valueor(3) Set Transmission output 2 Zero adjustment value with thethe value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 2 spankey, while viewing

key.
(4) Press the
The unit enters Transmission output 2 Span adjustment mode, and indicates the following.
Display
Indication Contents
DO Display
Temperature Display
Transmission output 2 Span adjustment valueor(5) Set Transmission output 2 Span adjustment value with thethe value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 2 span
Transmission output 2 adjustment is completed.
key.
(6) Press the
The unit reverts to Display Mode or Cleansing Output Mode.

48

key, while viewing

9. Measurement
9.1 Starting Measurement
For approx. 8 seconds after the power is switched ON, the following characters are indicated on
the DO Display and Temperature Display.
Display
Indication Contents
DO Display
Temperature Display[Version number (e.g.) 1.00]
During this time, all outputs are in OFF status, and action indicators except the PWR indicator turnoff.
After that, measurement starts, indicating DO concentration on the DO Display, and the measured
temperature on the Temperature Display.
This status is called Display Mode or Cleansing Output Mode.
Switching Between Modes
Every time thekey is pressed, modes on the DO Display progress as follows.

DO Concentration / Temperature Display Mode
DO % Saturation / Temperature Display Mode
Oxygen Partial Pressure / Temperature Display Mode

9.2 Outside Measurement Range
If DO concentration, DO % saturation, Oxygen partial pressure or temperature isoutside the range, the following will be indicated.
Input
DO Display
Temperature Display
DO concentration
Flashes at 20.00 or 0.00.
Measured value
DO % saturation
Flashes at 200.0 or 0.0.
Measured value
Oxygen partial pressure Flashes at 150.0 or 0.0.
Measured value
Temperature
Measured value
Flashes at 50.0 or 0.0.
9.3 Error Code
When the following errors occur, the DO Display turns off, and the Temperature Display indicatescorresponding error code.
Error CodeDescription
Occurrence
Non-volatile IC memory error
Constantly
When
DO Sensor communication errors have occurred, or DO Sensor ismeasuring andnot connected.
calibrating
After a command is sent to the DO Sensor, if there is no response
for 500 ms, the command will be sent again.
If no response occurs 4 times consecutively, this error code will be
indicated. If communication status returns to normal, the error will
be released, and the unit will automatically return to normal status.
When this error code is indicated, the previous measured value
is retained.
DO Sensor cap is not attached, or it is incorrectly attached.
Calibration error (If input errors have occurred, or if calibrationWhencannot be performed 30 minutes after starting calibration)
calibrating
DO Sensor internal memory deletion.
When
Displayed when Quality ID3 is received from the DO Sensor.
measuring andcalibrating49

9.4 About Transmission Output 1 and 2
Converting DO concentration, water temperature, DO % saturation, or Oxygen partial pressure toanalog signal every update cycle via communication, and outputs in current.
If Transmission output 1 high limit and low limit are set to the same value, Transmission output 1
will be fixed at 4 mA DC.
If Transmission output 2 high limit and low limit are set to the same value, Transmission output 2
will be fixed at 4 mA DC.
12000
Resolution
Current
4 to 20 mA DC (Load resistance: Max. 550 )Output accuracy Within 0.3% of Transmission output 1 or 2 span
For the following errors, Transmission output 1 or 2 will output 2 mA DC.
Error CodeDescription
DO Sensor communication error, or DO Sensor is not connected.
DO Sensor cap is not attached, or it is incorrectly attached.
Calibration error (If input errors have occurred, or if calibration
cannot be performed 30 minutes after starting calibration)
9.5 EVT1 to EVT6 Outputs
When any one of the following actions is selected in [EVT1 type (p.26)], it will perform as (Fig. 9.5-1).
(DO concentration input high limit action),(DO concentration input low limit action),(Water temperature input high limit action),(Water temperature input low limit action),(DO % saturation input high limit action),(DO % saturation input low limit action),(Oxygen partial pressure input high limit action),(Oxygen partial pressure input low
limit action)
The same applies to EVT2, EVT3, EVT4, EVT5 and EVT6.
• EVT1 Action (Activated based on the indication value)
DO concentration input high limit
DO concentration input low limit
Water temperature input high limit
Water temperature input low limit
DO % saturation input high limit
DO % saturation input low limit
Oxygen partial pressure input high limit Oxygen partial pressure input low limit
When measurement value is higher than
When measurement value is lower than
EVT1 value, EVT1 output is turned ON.
EVT1 value, EVT1 output is turned ON.
When measurement value is lower than
When measurement value is higher than
EVT1 value, EVT1 output is turned OFF.
EVT1 value, EVT1 output is turned OFF.
If Medium Value is selected in [EVT1 hysteresistype]:

If Medium Value is selected in [EVT1 hysteresistype]:

EVT1 ON sides

EVT1 ON sides
ON

ON

OFF

OFF
EVT1 value

EVT1 value
If Reference Value is selected in [EVT1hysteresis type]:
EVT1 OFF side*

If Reference Value is selected in [EVT1hysteresis type]:

EVT1 ON side*

EVT1 ON side*
ON

ON

OFF

OFF

EVT1 value

EVT1 OFF side*

EVT1 value(Fig. 9.5-1)* Setting Example:)] is set to 0, EVT1 output can be turned ON
If [EVT1 ON side ()].
at the value set in [EVT1 value (If [EVT1 OFF side ()] is set to 0, EVT1 output can be turned OFF)].
at the value set in [EVT1 value (50

When any one of the following actions is selected in [EVT1 type (p.26)], it will perform as (Fig. 9.5-2).
(DO concentration input High/Low limits independent action),(Water temperature input High/Low limits independent action),(DO % saturation input High/Low limitsindependent action),(Oxygen partial pressure input High/Low limits independent action)
The same applies to EVT2, EVT3, EVT4, EVT5 and EVT6.
DO concentration input High/Low limits independent action
Water temperature input High/Low limits independent action
DO % saturation input High/Low limits independent action
Oxygen partial pressure input High/Low limits independent action
EVT1 hysteresis

EVT1 hysteresis

ON
OFF
EVT1 High/Low limits
independent lower side value

EVT1 value

EVT1 High/Low limits
independent upper side value(Fig. 9.5-2)
When ‘Output ON time and OFF time when EVT1 Output is ON’ are set, the following action
is performed.
• Timing chart (Output ON time and OFF time when EVT1 output is ON)
ON
Actual EVT1 output
OFF

ON time is turned
OFF, caused by theactual EVT1 output
turning OFF.

ON
EVT1 output towhich ON time and
OFF time are set. OFF
ON
time

OFF
time

ON
time

OFF
time

ON
time

(Fig. 9.5-3)
EVT output status can be read by reading Status flag 2 (EVT1 to EVT6 output flag bit) in Serial
communication.
EVT output status, when input errors occur, differs depending on the selection in [EVT output
when input errors occur (p.34)].
• If(Disabled) is selected: EVT output is turned OFF when input errors occur.
(Enabled) is selected: EVT output is maintained when input errors occur.
• If

51

9.6 Sensor Cap Replacement Timer Output
When(Sensor cap replacement timer output) is selected in any of [EVT1 to EVT6 types(pp. 26, 31)], the unit operates as follows.
(1) If Sensor cap replacement timer value has elapsed (when Sensor cap replacement timer remainder
is “0”), the selected EVT output will be turned ON. (*1)
alternately, informing the
The DO Display indicates DO concentration measured value anduser to replace the sensor cap. (*2)(2) Replace the sensor cap.
After replacing the sensor cap, this unit automatically resets the Sensor cap replacement remainder
to the Sensor cap replacement timer value.
Sensor Cap Replacement Timer Output

EVT output

ONOFF

Sensor cap replacement
timer remainder

0

Time

0
Sensor cap replacement
timer starts

Sensor cap replacement
timer value has elapsed.

(Fig. 9.6-1)(*1) Even if power to this instrument is turned OFF and ON, EVT output remains ON until the sensor cap is replaced.
(*2) After Sensor cap replacement timer value has elapsed, and if Outside measurement range error has occurred
simultaneously,

and the Outside measurement range value will be displayed alternately.

52

9.7 Cleansing Output
If(Cleansing output) is selected in any of [EVT1 to EVT6 types (pp. 26, 31)], the unit willenter Cleansing Output Mode.
After ‘Cleansing inactive interval’ has elapsed, the selected EVT output is turned ON during the‘Cleansing time’.
After ‘Standby after cleansing’ has passed, the above action is repeated.
While cleansing is being performed using ‘Cleansing time’ and ‘Standby after cleansing’, other outputs
are in OFF status.
Measured values (DO concentration, DO % saturation, Oxygen partial pressure, water temperature)
are retained.
Normal programmed action will be performed, except during ‘Cleansing Perform’.
When power is turned ON again, starts from ‘Cleansing inactive interval’.
• Cleansing Output Action

Cleansing
Stop

Cleansing
Perform

Cleansing
Stop

Cleansing
Perform

Cleansing
Stop

Cleansing
Perform

Ccy: Cleansing inactive interval
Ctm: Cleansing time
Cit: Standby after cleansing(Fig. 9.7-1)• If(Cleansing output) is selected in any other [EVT type] during cleansing action, the current
setting values (Cleansing time, Cleansing inactive interval, Standby after cleansing) will be used forthe selected cleansing output.
If cleansing action (caused by cleansing cycle) is activated in calibration mode, cleansing action will
not be performed in the current session.
• If(None) is selected in [Cleansing inactive interval], or if any item except(Cleansing output) is selected in [EVT1 to EVT6 types (pp. 26, 31)], Cleansing Output Mode will end,
and the unit will revert to Display Mode.
If(Cleansing output) is selected in any of [EVT1 to EVT6 types (pp. 26, 31)], and if(None) is selected in [Cleansing inactive interval], only Forced cleansing mode will be enabled.

53

9.8 Forced Cleansing Modekey for approx. 3 seconds, the unit enters Forced cleansing mode.
By pressing the
In Forced cleansing mode, cleansing is performed using ‘Cleansing time’ and ‘Standby after
cleansing’.
After cleansing action is finished, the unit automatically reverts to Cleansing Output Mode.
key if programmed cleansing is currently being
This mode will not be accessible by theperformed.
During Forced cleansing mode, if programmed cleansing action initiates after ‘Cleansing inactive
interval’ has passed, the programmed cleansing action will not be performed in the current session.
• Forced Cleansing Mode Action(3 sec)(3 sec)Cleansing
Stop

Cleansing Cleansing
Perform
Stop

Key operation

Cleansing
Stop

Cleansing
Perform

During cleansing action, even if the
key is pressed, the unit cannot enter
Forced cleansing mode.

Cleansing
Perform

During Forced cleansing mode, theprogrammed cleansing action will be
invalidated.

Ccy: Cleansing inactive interval
Ctm: Cleansing time
Cit: Standby after cleansing(Fig. 9.8-1)

54

10. Communication
10.1 System Configuration Example• When using the USB Communication Cable CMC-001-3 (sold separately)
No. 0

WIL-102-DO
No. 1 No. 2

No. 30

Host Computer

USB Communication Cable
CMC-001-3 (sold separately)(Fig. 10.1-1)• When using the Communication Converter IF-400 (sold separately)
Host Computer

Communication Converter
IF-400 (sold separately) No. 0

RS-232C

RS-485(Fig. 10.1-2)

55

WIL-102-DO
No. 1 No. 2

No. 3010.2 Setting Method of the Instrument
Communication parameters can be set in the Communication Group.
To enter the Communication Group, follow the procedure below.
1
Press thekey 6 times in Display Mode or Cleansing Output Mode.
If EVT output (EVT option) is ordered, press thekey 10 times in Display Modeor Cleansing Output Mode.
2

3

Press thekey.
The unit enters Communication Group, and ’Communication protocol‘ will appear.
Set each item. (Use theCharacteror

key for settings, and register the value with the

Setting Item, Function, Setting Range
Communication protocol

key.)

Factory Default
Shinko protocol• Selects communication protocol.
: Shinko protocol•: MODBUS ASCII mode
: MODBUS RTU mode
Instrument number0• Sets the instrument number.
The instrument numbers should be set one by one when multiple instruments areconnected in Serial communication, otherwise communication is impossible.
• Setting range: 0 to 95
Communication speed
9600 bps• Selects a communication speed equal to that of the host computer.
: 9600 bps•: 19200 bps: 38400 bps
Data bit/Parity
7 bits/Even• Selects data bit and parity.
: 8 bits/No parity•: 7 bits/No parity: 8 bits/Even: 7 bits/Even: 8 bits/Odd: 7 bits/Odd
Stop bit
1 bit• Selects the stop bit.
: 1 bit•: 2 bits
4

Press thekey several times. The unit reverts to Display Mode or Cleansing Output Mode.

56

10.3 Communication Procedure
Communication starts with command transmission from the host computer (hereafter Master) andends with the response of the WIL-102-DO (hereafter Slave).
• Response with Data
When the master sends the reading command, the slave
responds with the corresponding set value or current status.
Data• Acknowledgement
When the master sends the setting command, the slave
Command
responds
by sending acknowledgement after the processing
Acknowledgement
is terminated.
• Negative Acknowledgement
Command
When the master sends a non-existent command or value
Negative Acknowledgementout of the setting range, the slave returns a negative
acknowledgement.
Command• No Response
The slave will not respond to the master in the following cases:
No response• Global address (Shinko protocol) is set.
• Broadcast address (MODBUS protocol) is set.
(Fig.10.3-1)• Communication error (framing error, parity error)• Checksum error (Shinko protocol), LRC discrepancy (MODBUSASCII mode), CRC-16 discrepancy (MODBUS RTU mode)
Communication Timing of the RS-485
Master Side (Take note while programming)
When the master starts transmission through the RS-485 communication line, the master is arranged
so as to provide an idle status (mark status) transmission period of 1 or more characters before
sending the command to ensure synchronization on the receiving side.
Set the program so that the master can disconnect the transmitter from the communication line withina 1 character transmission period after sending the command in preparation for reception of the
response from the slave.
To avoid collision of transmissions between the master and the slave, send the next command after
carefully checking that the master has received the response.
If a response to the command is not returned due to communication errors, set the Retry Processing
to send the command again. (It is recommended to execute Retry twice or more.)
MasterSlaveCommand

Slave Side
When the slave starts transmission through the RS-485 communication line, the slave is arranged so
as to provide an idle status (mark status) transmission period of 1 or more characters before sending
the response to ensure synchronization on the receiving side.
The slave is arranged so as to disconnect the transmitter from the communication line within a 1
character transmission period after sending the response.

5710.4 Shinko Protocol

10.4.1 Transmission Mode
Shinko protocol is composed of ASCII.
Hexadecimal (0 to 9, A to F), which is divided into high order (4-bit) and low order (4-bit) out of 8-bit
binary data in command is transmitted as ASCII characters.
Data format
Start bit: 1 bit
Data bit: 7 bits
Parity: Even
Stop bit: 1 bit
Error detection: Checksum
10.4.2 Command Configuration
All commands are composed of ASCII.
The data (set value, decimal number) is represented by hexadecimal numbers.
The negative numbers are represented in 2's complement.
Numerals written below the command represent the number of characters.
(1) Setting Command
Sub
HeaderCommand
Data
Address
address
Data
Checksum(02H)
type (50H)
item
(20H)
1
1
1
1
4
4
2

Delimiter(03H)
1(2) Reading Command
Header(02H)

Address

1

1

Sub
address(20H)
1Commandtype (20H)

Data
item

Checksum

Delimiter
(03H)

1

4

2

1

Commandtype (20H)

Data
item

Data

Checksum

Delimiter
(03H)

1

4

4

2

1

(3) Response with Data
Header(06H)

Address

1

1(4) Acknowledgement
HeaderAddress
(06H)
1
1

Sub
address(20H)
1

Checksum2(5) Negative Acknowledgement
HeaderError
Address
(15H)
code
1
1
1

Delimiter(03H)
1

Checksum2

Header:Delimiter(03H)
1

Control code to represent the beginning of the command or the response.
ASCII codes are used.
Setting command, Reading command: STX (02H) fixed.
Response with data, Acknowledgement: ACK (06H) fixed.
Negative acknowledgement:
NAK (15H) fixed.
Instrument Number (Address): Numbers by which the master discerns each slave.
Instrument number 0 to 94 and Global address 95.
ASCII codes (20H to 7FH) are used by adding 20H to instrument numbers 0 to 95(00H to 5FH).
95 (7FH) is called Global address, which is used when the same command is sent
to all the slaves connected. However, the response is not returned.
Sub Address:
20H fixed.
Command Type: Code to discern Setting command (50H) and Reading command (20H).
Data Item:Classification of the command object.
Composed of 4-digit hexadecimal numbers, using ASCII.
Refer to “10.6. Communication Command Table”. (pp. 64 to 72)58Data:

The contents of data (set value) differ depending on the setting command.
Composed of 4-digit hexadecimal numbers, using ASCII.
Refer to “10.6. Communication Command Table”. (pp. 64 to 72)
2-character data to detect communication errors.
Refer to “10.4.3 Checksum Calculation”.
Control code to represent the end of command.
ASCII code ETX (03H) fixed.
Represents an error type using ASCII.
1 (31H)-----Non-existent command
2 (32H)-----Not used
3 (33H)-----Value outside the setting range
4 (34H)-----Status unable to be set (e.g. During calibration)
5 (35H)-----During setting mode by keypad operation

Checksum:
Delimiter:
Error Code:10.4.3 Checksum Calculation
Checksum is used to detect receiving errors in the command or data.
Set the program for the master side as well to calculate the checksum of the response data fromthe slaves so that communication errors can be checked.
The ASCII code (hexadecimal) corresponding to the characters which range from the address tothat before the checksum is converted to binary notation, and the total value is calculated.
The lower one byte of the total value is converted to 2’s complement, and then to hexadecimal
numbers, that is, ASCII code for the checksum.
• 1’s complement: Reverse each binary bit. 0 will become 1 and vice versa.
• 2’s complement: Add 1 to 1’s complement.
Checksum Calculation Example
Data item 001BH (EVT1 ON delay time): 100 seconds (0064H)
Address (instrument number): 0 (20H)
Checksum calculation range[e.g.]
P

STX

0

0

1

B

0

0

6

4

30H

30H

36H

34H

D

3

ETX

[Characters above are represented in ASCII.]
02H

20H

20H

50H

30H

30H

31H

42H

[Hexadecimal][Binary]0010 0000
20H
0010 0000
20H
0101 0000
50H
0011 0000
30H
0011 0000
30H
0011 0001
31H
0100 0010
42H
0011 0000
30H
0011 0000
30H
0011 0110
36H
0011 0100+ 34H
10 0010 1101

44H 33H

Checksum[1's complement]+[2's complement](Fig. 10.4.3-1)

591101 0010
11101 0011[Hexadecimal]

D[ASCII]

44H 33H

3

Checksum03H10.5 MODBUS Protocol

10.5.1 Transmission Mode
There are 2 transmission modes (ASCII and RTU) in MODBUS protocol.
ASCII Mode
Hexadecimal (0 to 9, A to F), which is divided into high order (4-bit) and low order (4-bit)
out of 8-bit binary data in command is transmitted as ASCII characters.
Data format
Start bit: 1 bit
Data bit: 7 bits (8 bits) (Selectable)
Parity:Even (No parity, Odd) (Selectable)
Stop bit: 1 bit (2 bits) (Selectable)
Error detection : LRC (Longitudinal Redundancy Check)
RTU Mode
8-bit binary data in command is transmitted as it is.
Data format
Start bit: 1 bit
Data bit: 8 bits
Parity:No parity (Even, Odd) (Selectable)
Stop bit: 1 bit (2 bits) (Selectable)
Error detection: CRC-16 (Cyclic Redundancy Check)10.5.2 Data Communication Interval
ASCII Mode
Max.1 second of interval between ASCII mode characters
RTU Mode
Communication speed 9600 bps, 19200 bps:
To transmit continuously, an interval between characters which consist of one message, must bewithin 1.5-character transmission times.
Communication speed 38400 bps:
To transmit continuously, an interval between characters which consist of one message, must bewithin 750 s.
If an interval lasts longer than 1.5-character transmission times or 750 s, the WIL-102-DO
assumes that transmission from the master is finished, which results in a communication error, andwill not return a response.

10.5.3 Message Configuration
ASCII Mode
ASCII mode message is configured to start by Header [: (colon) (3AH)] and end by Delimiter [CR(carriage return) (0DH) + LF (Line feed) (0AH)].
Header(:)

Slaveaddress

Function
code

Error check
LRC

Data

Delimiter(CR)

Delimiter(LF)

RTU Mode
Communication speed 9600 bps, 19200 bps: RTU mode is configured to start after idle time isprocessed for more than 3.5-character transmissions, and end after idle time is processed formore than 3.5-character transmissions.
Communication speed 38400 bps: RTU mode is configured to start after idle time is processed
for more than 1.75 ms, and end after idle time is processed for more than 1.75 ms.
Error check3.5 idle
3.5 idle
Slave
Function
Data
CRC-16characterscharacters addresscode(1) Slave Address
Slave address is an individual instrument number on the slave side, and is set within the range
0 to 95 (00H to 5FH). The master identifies slaves by the slave address of the requested
message.
60

The slave informs the master which slave is responding to the master by placing its own
address in the response message.
Slave address 00H (Broadcast address) can identify all the slaves connected. However, slaves
do not respond.
(2) Function CodeThe function code is the command code for the slave to undertake one of the following actions.
(Table 10.5.3-1)
Contents
Function Code03 (03H)
Reading the set value and information from slaves
06 (06H)
Setting to slaves
The Function code is used to discern whether the response is normal (acknowledgement) or if any
error (negative acknowledgement) has occurred when the slave returns the response message tothe master.
When acknowledgement is returned, the slave simply returns the original function code.
When negative acknowledgement is returned, the MSB of the original function code is set as 1 forthe response.
(For example, if the master sends request message setting 10H to the function code by mistake,slave returns 90H by setting the MSB to 1, because the former is an illegal function.)
For negative acknowledgement, the exception codes below are set to the data of the response
message, and returned to the master in order to inform it of what kind of error has occurred. (Table
10.5.3-2)(Table 10.5.3-2)
Contents
Exception Code1 (01H)
Illegal function (Non-existent function)
2 (02H)
Illegal data address (Non-existent data address)
3 (03H)
Illegal data value (Value out of the setting range)
Shinko protocol error code 4 [Status unable to be set. (e.g.) During
17 (11H)
calibration]
18 (12H)
Shinko protocol error code 5 (During setting mode by keypad operation)(3) Data
Data differs depending on the function code.
A request message from the master is composed of a data item, amount of data and setting data.
A response message from the slave is composed of the byte count, data and exception codes innegative acknowledgements.
The effective range of data is -32768 to 32767 (8000H to 7FFFH).
(4) Error CheckASCII Mode
After calculating LRC (Longitudinal Redundancy Check) from the slave address to the end ofdata, the calculated 8-bit data is converted to two ASCII characters, and are appended to the endof message.
How to calculate LRC
1 Create a message in RTU mode.
2 Add all the values from the slave address to the end of data. This is assumed as X.
3 Make a complement for X (bit reverse). This is assumed as X.
4 Add a value of 1 to X. This is assumed as X.
5 Set X as an LRC to the end of the message.
6 Convert the whole message to ASCII characters.

61

RTU Mode
After calculating CRC-16 (Cyclic Redundancy Check) from the slave address to the end of thedata, the calculated 16-bit data is appended to the end of message in sequence from low order tohigh order.
How to calculate CRC-16
In the CRC-16 system, the information is divided by the polynomial series. The remainder is added
to the end of the information and transmitted. The generation of a polynomial series is as follows.
(Generation of polynomial series: X16 + X 15 + X 2 + 1)
1 Initialize the CRC-16 data (assumed as X) (FFFFH).
2 Calculate exclusive OR (XOR) with the 1st data and X. This is assumed as X.
3 Shift X one bit to the right. This is assumed as X.
4 When a carry is generated as a result of the shift, XOR is calculated by X of 3 andthe fixed value (A001H). This is assumed as X. If a carry is not generated, go to step 5 .
5 Repeat steps 3 and 4 until shifting 8 times.
6 XOR is calculated with the next data and X. This is assumed as X.
7 Repeat steps 3 to 5 .
8 Repeat steps 3 to 5 up to the final data.
9 Set X as CRC-16 to the end of message in sequence from low order to high order.

10.5.4 Message Example
ASCII Mode
Numerals written below the command represent the number of characters.
1

Reading [Slave address 1, Data item 0080H (DO concentration)]• A request message from the masterAmount of data means how many data items are to be read. It is fixed as (30H 30H 30H 31H).
Header Slave
Function
Data item
Amount of data
Error check Delimiter
addresscode[0080H][0001H]
LRC(3AH) (30H 31H) (30H 33H) (30H 30H 38H 30H) (30H 30H 30H 31H) (37H 42H) (0DH 0AH)
1
2
2
4
4
2
2
• Response message from the slave in normal status [When DO concentration is 1.00 mg/L (0064H)]
The response byte count means the byte count of data which have been read. It is fixed as (30H
32H).
Response
Header Slave
Function
Data
Error check Delimiter
byte countaddresscode[0064H]
LRC[02H](3AH) (30H 31H) (30H 33H)
(30H 30H 36H 34H) (39H 36H) (0DH 0AH)
(30H 32H)
1
2
2
2
4
2
2
• Response message from the slave in exception (error) status (When a data item is incorrect)
The function code MSB is set to 1 for the response message in exception (error) status (83H isreturned). The exception code 02H (Non-existent data address) is returned (error).
Header Slave
Function Exception code Error check Delimiter
address
code
[02H]
LRC
(3AH) (30H 31H) (38H 33H) (30H 32H)
(37H 41H) (0DH 0AH)
1
2
2
2
2
2
Setting [Slave address 1, Data item 001BH (EVT1 ON delay time)• A request message from the master [When EVT1 ON delay time is set to 100 seconds (0064H)]
Header Slave
Function
Data item
Data
Error check Delimiter
addresscode[001BH][0064H]
LRC(3AH) (30H 31H) (30H 36H) (30H 30H 31H 42H) (30H 30H 36H 34H) (44H 45H) (0DH 0AH)
1
2
2
4
4
2
2

2

• Response message from the slave in normal status
Header Slave
Function
Data item
Data
Error check Delimiter
addresscode[001BH][0064H]
LRC(3AH) (30H 31H) (30H 36H) (30H 30H 31H 42H) (30H 30H 36H 34H) (44H 45H) (0DH 0AH)
1
2
2
4
4
2
2
62

• Response message from the slave in exception (error) status (When a value out of the setting
range is set.)
The function code MSB is set to 1 for the response message in exception (error) status (86H isreturned). The exception code 03H (Value out of the setting range) is returned (error).
Header Slave
Function Exception code Error check
Delimiter
address
code
[03H]
LRC
(3AH) (30H 31H) (38H 36H) (30H 33H)
(37H 36H)(0DH 0AH)
1
2
2
2
2
2
RTU Mode
Numerals written below the command represent number of characters.
Reading [Slave address 1, Data item 0080H (DO concentration)]• A request message from the masterAmount of data means how many data items are to be read. It is fixed as (0001H).
Slave
Function
Data item
Amount of data
Error check3.5 idle
addresscode
CRC-16characters
(01H)
(03H)
(0080H)(0001H)(85E2H)
1
1
2
2
2

1

3.5 idle
characters• Response message from the slave in normal status [When DO concentration is 1.00 mg/L (0064H)]
The response byte count means the byte count of data which has been read. It is fixed as (02H).
Slave
Function
Response
Data
Error check3.5 idle
3.5 idle
addresscodebyte countCRC-16characterscharacters
(01H)
(03H)
(02H)
(0064H)(B9AFH)1
1
1
2
2• Response message from the slave in exception (error) status (When a data item is incorrect)
The function code MSB is set to 1 for the response message in exception (error) status (83H isreturned).
The exception code (02H: Non-existent data address) is returned (error).
Slave
Function Exception code
Error check3.5 idle
3.5 idle
addresscode
CRC-16characterscharacters
(01H)
(83H)
(02H)
(C0F1H)1
1
1
2
Setting (Slave address 1, Data item 001BH (EVT1 ON delay time)• A request message from the master [When EVT1 ON delay time is set to 100 seconds (0064H)]
Slave
Function
Data item
Data
Error check3.5 idle
3.5 idle
addresscode
CRC-16characterscharacters
(01H)
(06H)
(001BH)(0064H)(F826H)
1
1
2
2
2

2

• Response message from the slave in normal status
Slave
Function
Data item
3.5 idle
addresscodecharacters
(01H)
(06H)
(001BH)
1
1
2

Data(0064H)
2

Error check
CRC-16(F826H)2

3.5 idle
characters• Response message from the slave in exception (error) status (When a value out of the setting range
is set)
The function code MSB is set to 1 for the response message in exception (error) status (86H isreturned.).
The exception code (03H: Value out of the setting range) is returned (error).
Slave
Function Exception code
Error check3.5 idle
3.5 idle
addresscode
CRC-16characterscharacters
(01H)
(86H)
(03H)
(0261H)1
1
1
2
63

10.6 Communication Command Table

10.6.1 Notes about Setting/Reading Command• The data (set value, decimal) is converted to hexadecimal numbers.
Negative numbers are represented in 2's complement.
• When connecting multiple slaves, the address (instrument number) must not be duplicated.
• Data items 0200H to 0209H (User save area 1 to 10) can be read or set in 1 word units.
Effective range of data is -32768 to 32767 (8000H to 7FFFH).
• MODBUS protocol uses Holding Register addresses. The Holding Register addresses are created asfollows. A Shinko command data item is converted to decimal number, and the offset of 40001 is
added. The result is the Holding Register address.
Using Data item 0001H (Signal output response time) as an example: Data item in the sending
message is 0001H, however, MODBUS protocol Holding Register address is 40002 (1 + 40001).
• Even if EVT output (EVT option) is not ordered, setting or reading via software communication will
be possible. However, EVT3 to EVT6 command contents will not function.
(1) Setting Command• Up to 1,000,000 (one million) entries can be stored in non-volatile IC memory.
If the number of settings exceeds the limit, the data will not be saved. So, do not change the set
values frequently via software communication. (If a value set via software communication is thesame as the value before the setting, the value will not be written in non-volatile IC memory.)• Be sure to select Lock 3 when changing the set value frequently via software communication. If Lock3 is selected, all set values can be temporarily changed. However, they revert to their previous value
after the power is turned off because they are not saved in the non-volatile IC memory.
Do not change setting items (EVT1, EVT2, EVT3, EVT4, EVT5, EVT6 types). If they are changed, they
will affect other setting items.
• Setting range of each item is the same as that of keypad operation.
• When the data (set value) has a decimal point, a whole number (hexadecimal) without a decimal
point is used.
• If EVT type is changed in [EVT1 type] to [EVT6 type], EVT1 to EVT6 value will default to 0 (zero). The
output status of EVT1 to EVT6 will also be initialized.
• Settings via software communication are possible while in Set value lock status.
• Communication parameters such as Instrument Number, Communication Speed of the slave cannot be
set by software communication. They can only be set via the keypad. (p.56)• When sending a command by Global address [95 (7FH), Shinko protocol] or Broadcast address[(00H), MODBUS protocol], the same command is sent to all the slaves connected. However, theresponse is not returned.
(2) Reading Command• When the data (set value) has a decimal point, a whole number (hexadecimal) without a decimal
point is used for a response.

6410.6.2 Setting/Reading Command
Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0001H Signal output response
time
50H/20H 06H/03H 0003H Salinity correction
50H/20H 06H/03H 0004H Altitude correction
50H
06H
0005H DO concentration
calibration mode

50H

06H

0006H DO concentration
calibration startData
Set value (1 to 120)
‘1’ corresponds to 5 seconds, and‘120’ corresponds to 600 seconds.
Set value
Set value
0000H: Display Mode
0001H: DO concentration 1-point calibration
mode
0002H: DO concentration 2-point calibration
mode
0003H: Concentration option calibration mode
DO concentration 1-point calibration:
0000H: DO concentration 1-point calibration
mode
0001H: 1-point calibration (100% saturation
calibration) start
0003H: Measured value fixed
DO concentration 2-point calibration:
0000H: DO concentration 2-point calibration
mode
0001H: 1st-point calibration (100% saturation
calibration) start
0002H: 2nd-point calibration (0-point calibration)
start
0003H: Measured value fixedConcentration option calibration:
0000H: Concentration option calibration mode
0001H: Concentration option calibration start
0003H: Measured value fixedSet value (Decimal point ignored.)

50H/20H 06H/03H 0007H Concentration desiredvalue
50H/20H 06H/03H 0008H Transmission output 1 type 0000H: DO concentration transmission
0001H: Water temperature transmission
0002H: DO % saturation transmission
0003H: Oxygen partial pressure transmission
50H/20H 06H/03H 0009H Transmission output 1 high Set value (Decimal point ignored.)limit
50H/20H 06H/03H 000AH Transmission output 1 low Set value (Decimal point ignored.)limit
50H/20H 06H/03H 000BH Transmission output 2 type 0000H: DO concentration transmission
0001H: Water temperature transmission
0002H: DO % saturation transmission
0003H: Oxygen partial pressure transmission
50H/20H 06H/03H 000CH Transmission output 2 high Set value (Decimal point ignored.)limit
50H/20H 06H/03H 000DH Transmission output 2 low Set value (Decimal point ignored.)limitTransmission
output 1
0000H: Display Mode
50H
06H
000EH
adjustment mode
0001H: Transmission output 1 Zeroadjustment mode
0002H: Transmission output 1 Spanadjustment mode
50H/20H 06H/03H 000FH Transmission output 1
Set value (Decimal point ignored.)
Zero adjustment value
50H/20H 06H/03H 0010H Transmission output 1
Set value (Decimal point ignored.)Span adjustment value
65

Shinko MODBUS
Command Function
Data Item
Type
Code
50H
06H
0011H Transmission output 2
adjustment mode

50H/20H 06H/03H 0012H Transmission output 2
Zero adjustment value
50H/20H 06H/03H 0013H Transmission output 2
Span adjustment value
50H/20H 06H/03H 0014H EVT1 type

50H/20H 06H/03H 0015H EVT1 value
50H/20H 06H/03H 0018H EVT1 hysteresis type
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H 0019H EVT1 ON side
06H/03H 001AH EVT1 OFF side
06H/03H 001BH EVT1 ON delay time
06H/03H 001CH EVT1 OFF delay time
06H/03H 0020H Output ON Time when
EVT1 Output ON
50H/20H 06H/03H 0021H Output OFF Time when
EVT1 Output ON
50H/20H 06H/03H 0022H EVT2 type

66

Data
0000H: Display Mode
0001H: Transmission output 2 Zero adjustment
mode
0002H: Transmission output 2 Span adjustment
mode
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
0000H: No action
0001H: DO concentration input high limit action
0002H: DO concentration input low limit action
0003H: Water temperature input high limit action
0004H: Water temperature input low limit action
0005H: DO % saturation input high limit action
0006H: DO % saturation input low limit action
0007H: Oxygen partial pressure input high limit action
0008H: Oxygen partial pressure input low limit action
0009H: Sensor cap replacement timer
000AH: Self-check output
000BH: Cleansing output
000CH: DO concentration input High/Low limits
independent action
000DH: Water temperature input High/Low limits
independent action
000EH: DO % saturation input High/Low limits
independent action
000FH: Oxygen partial pressure input High/Low
limits independent action
Set value (Decimal point ignored.)
0000H: Medium Value
0001H: Reference Value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
Set value
Set value
0000H: No action
0001H: DO concentration input high limit action
0002H: DO concentration input low limit action
0003H: Water temperature input high limit action
0004H: Water temperature input low limit action
0005H: DO % saturation input high limit action
0006H: DO % saturation input low limit action
0007H: Oxygen partial pressure input high limit action
0008H: Oxygen partial pressure input low limit action
0009H: Sensor cap replacement timer
000AH: Self-check output
000BH: Cleansing output
000CH: DO concentration input High/Low limits
independent action
000DH: Water temperature input High/Low limits
independent action
000EH: DO % saturation input High/Low limits
independent action
000FH: Oxygen partial pressure input High/Low
limits independent action

Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0023H EVT2 value
50H/20H 06H/03H 0026H EVT2 hysteresis type
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H 0027H EVT2 ON side
06H/03H 0028H EVT2 OFF side
06H/03H 0029H EVT2 ON delay time
06H/03H 002AH EVT2 OFF delay time
06H/03H 002EH Output ON Time when
EVT2 Output ON
50H/20H 06H/03H 002FH Output OFF Time when
EVT2 Output ON
50H/20H 06H/03H 0030H EVT3 type

50H/20H 06H/03H 0031H EVT3 value
50H/20H 06H/03H 0034H EVT3 hysteresis type
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H 0035H EVT3 ON side
06H/03H 0036H EVT3 OFF side
06H/03H 0037H EVT3 ON delay time
06H/03H 0038H EVT3 OFF delay time
06H/03H 003CH Output ON Time when
EVT3 Output ON
50H/20H 06H/03H 003DH Output OFF Time when
EVT3 Output ON

67

Data
Set value (Decimal point ignored.)
0000H: Medium Value
0001H: Reference Value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
Set value
Set value
0000H: No action
0001H: DO concentration input high limit action
0002H: DO concentration input low limit action
0003H: Water temperature input high limit action
0004H: Water temperature input low limit action
0005H: DO % saturation input high limit action
0006H: DO % saturation input low limit action
0007H: Oxygen partial pressure input high limit action
0008H: Oxygen partial pressure input low limit action
0009H: Sensor cap replacement timer
000AH: Self-check output
000BH: Cleansing output
000CH: DO concentration input High/Low limits
independent action
000DH: Water temperature input High/Low limits
independent action
000EH: DO % saturation input High/Low limits
independent action
000FH: Oxygen partial pressure input High/Low
limits independent action
Set value (Decimal point ignored.)
0000H: Medium Value
0001H: Reference Value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
Set value
Set valueShinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 003EH EVT4 type

Data

50H/20H 06H/03H 003FH EVT4 value
50H/20H 06H/03H 0042H EVT4 hysteresis type
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

0000H: No action
0001H: DO concentration input high limit action
0002H: DO concentration input low limit action
0003H: Water temperature input high limit action
0004H: Water temperature input low limit action
0005H: DO % saturation input high limit action
0006H: DO % saturation input low limit action
0007H: Oxygen partial pressure input high limit action
0008H: Oxygen partial pressure input low limit action
0009H: Sensor cap replacement timer
000AH: Self-check output
000BH: Cleansing output
000CH: DO concentration input High/Low limits
independent action
000DH: Water temperature input High/Low limits
independent action
000EH: DO % saturation input High/Low limits
independent action
000FH: Oxygen partial pressure input High/Low
limits independent action
Set value (Decimal point ignored.)
0000H: Medium Value
0001H: Reference Value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
Set value

06H/03H 0043H EVT4 ON side
06H/03H 0044H EVT4 OFF side
06H/03H 0045H EVT4 ON delay time
06H/03H 0046H EVT4 OFF delay time
06H/03H 004AH Output ON Time when
EVT4 Output ON
50H/20H 06H/03H 004BH Output OFF Time when Set value
EVT4 Output ON
50H/20H 06H/03H 004CH EVT5 type
0000H: No action
0001H: DO concentration input high limit action
0002H: DO concentration input low limit action
0003H: Water temperature input high limit action
0004H: Water temperature input low limit action
0005H: DO % saturation input high limit action
0006H: DO % saturation input low limit action
0007H: Oxygen partial pressure input high limit action
0008H: Oxygen partial pressure input low limit action
0009H: Sensor cap replacement timer
000AH: Self-check output
000BH: Cleansing output
000CH: DO concentration input High/Low limits
independent action
000DH: Water temperature input High/Low limits
independent action
000EH: DO % saturation input High/Low limits
independent action
000FH: Oxygen partial pressure input High/Low
limits independent action
68Shinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 004DH EVT5 value
50H/20H 06H/03H 0050H EVT5 hysteresis type
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H 0051H EVT5 ON side
06H/03H 0052H EVT5 OFF side
06H/03H 0053H EVT5 ON delay time
06H/03H 0054H EVT5 OFF delay time
06H/03H 0058H Output ON Time when
EVT5 Output ON
50H/20H 06H/03H 0059H Output OFF Time when
EVT5 Output ON
50H/20H 06H/03H 005AH EVT6 type

50H/20H 06H/03H 005BH EVT6 value
50H/20H 06H/03H 005EH EVT6 hysteresis type
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H
50H/20H

06H/03H 005FH EVT6 ON side
06H/03H 0060H EVT6 OFF side
06H/03H 0061H EVT6 ON delay time
06H/03H 0062H EVT6 OFF delay time
06H/03H 0066H Output ON Time when
EVT6 Output ON
06H/03H 0067H Output OFF Time when
EVT6 Output ON
06H/03H 0068H Cleansing time
06H/03H 0069H Cleansing inactive interval
06H
006AH Forced cleansing mode
06H/03H 006BH Set value lock50H/20H 06H/03H 006CH Auto-light function
50H/20H 06H/03H 006DH Indication time
50H/20H 06H/03H 0074H EVT output when input
errors occur
69

Data
Set value (Decimal point ignored.)
0000H: Medium Value
0001H: Reference Value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
Set value
Set value
0000H: No action
0001H: DO concentration input high limit action
0002H: DO concentration input low limit action
0003H: Water temperature input high limit action
0004H: Water temperature input low limit action
0005H: DO % saturation input high limit action
0006H: DO % saturation input low limit action
0007H: Oxygen partial pressure input high limit action
0008H: Oxygen partial pressure input low limit action
0009H: Sensor cap replacement timer
000AH: Self-check output
000BH: Cleansing output
000CH: DO concentration input High/Low limits
independent action
000DH: Water temperature input High/Low limits
independent action
000EH: DO % saturation input High/Low limits
independent action
000FH: Oxygen partial pressure input High/Low
limits independent action
Set value (Decimal point ignored.)
0000H: Medium Value
0001H: Reference Value
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value
Set value
Set value
Set value
Set value
Set value
0001H: Forced cleansing mode
0000H: Unlock
0001H: Lock 1
0002H: Lock 2
0003H: Lock 3
0000H: Disabled
0001H: Enabled
Set value
0000H: Enabled
0001H: DisabledShinko MODBUS
Command Function
Data ItemType
Code
50H/20H 06H/03H 0075H Data clear selection
50H
50H/20H
50H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H

0076H Data clear Stop/Perform

06H/03H 0077H Standby after cleansing
06H
007FH Key operation change flagclearing
06H/03H 0100H EVT1 High/Low limits
independent lower side value
06H/03H 0101H EVT2 High/Low limits
independent lower side value
06H/03H 0102H EVT3 High/Low limits
independent lower side value
06H/03H 0103H EVT4 High/Low limits
independent lower side value
06H/03H 0104H EVT5 High/Low limits
independent lower side value
06H/03H 0105H EVT6 High/Low limits
independent lower side value
06H/03H 0106H EVT1 High/Low limits
independent upper side value
06H/03H 0107H EVT2 High/Low limits
independent upper side value
06H/03H 0108H EVT3 High/Low limits
independent upper side value
06H/03H 0109H EVT4 High/Low limits
independent upper side value
06H/03H 010AH EVT5 High/Low limits
independent upper side value
06H/03H 010BH EVT6 High/Low limits
independent upper side value
06H/03H 010CH EVT1 hysteresis
06H/03H 010DH EVT2 hysteresis
06H/03H 010EH EVT3 hysteresis
06H/03H 010FH EVT4 hysteresis
06H/03H 0110H EVT5 hysteresis
06H/03H 0111H EVT6 hysteresis
06H/03H 0112H Transmission output 1 statuswhen calibrating
06H/03H 0113H Transmission output 1 value
HOLD when calibrating
06H/03H 0114H Transmission output 2 statuswhen calibrating
06H/03H 0115H Transmission output 2 value
HOLD when calibrating
06H/03H 0200H User save area 1
06H/03H 0201H User save area 2
06H/03H 0202H User save area 3
06H/03H 0203H User save area 4
06H/03H 0204H User save area 5
06H/03H 0205H User save area 6
06H/03H 0206H User save area 7
06H/03H 0207H User save area 8
06H/03H 0208H User save area 9
06H/03H 0209H User save area 1070

Data
0000H: Calibration value
0001H: Set value
0000H: Data clear Stop
0001H: Data clear Perform
Set value
0001H: Clear change flag
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
Set value (Decimal point ignored.)
0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value
Set value (Decimal point ignored.)
0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value
Set value (Decimal point ignored.)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)-32768 to 32767 (8000H to 7FFFH)

10.6.3 Read Only Command
Shinko MODBUS
Command Function
Data Item
Data
Type
Code
20H
03H
0080H DO concentration
DO concentration (Decimal point ignored.)
20H
03H
0081H DO % saturation
DO % saturation (Decimal point ignored.)
20H
03H
0082H Oxygen partial pressure
Oxygen partial pressure (Decimal point ignored.)
20H
03H
0083H Status flag 10000 0000 0000 0000
to
20
215
20 digit: Outside measurement range of DO concentration (high limit)
0: Normal
1: Error1
2 digit: Outside measurement range of DO concentration (low limit)
0: Normal
1: Error2
2 digit: Outside measurement range of DO % saturation (high limit)
0: Normal
1: Error3
2 digit: Outside measurement range of DO % saturation (low limit)
0: Normal
1: Error4
2 digit: Outside measurement range of Oxygen partial pressure (high limit)
0: Normal
1: Error5
2 digit: Outside measurement range of Oxygen partial pressure (low limit)
0: Normal
1: Error6
2 digit: Communication errors have occurred or DO Sensor is not connected.
0: Normal
1: Error7
2 digit: DO Sensor cap is not attached, or it is incorrectly attached.
0: Normal
1: Error8
1: Error2 digit: Calibration error 0: Normal
0: Display Mode 1: Setting mode
29 digit: Unit status flag
210, 211 digits: Calibration mode status flag
211 210
Status0
0 Display Mode0
1 DO concentration 1-point calibration mode
1
0 DO concentration 2-point calibration mode
1
1 Concentration option calibration mode
212, 213 digits: Calibration status flag
213 212
Status00 Standby0
1 During 1st-point calibration (100% saturation calibration )10 During 2nd-point calibration (0-point calibration)
1
1 During concentration option calibration
214 digit: DO Sensor internal memory deletion
0: No
215 digit: Change in key operation 0: No 1: Yes

71

1: YesShinko MODBUS
Command Function
Data Item
Data
Type
Code
20H
03H
0090H Temperature
Temperature (Decimal point ignored.)
20H
03H
0091H Sensor cap replacement timer
Sensor cap replacement timer
remainder
remaining time
20H
03H
0093H Status flag 20000 0000 0000 0000
to
20
215
0
2 digit: Outside measurement range of temperature (high limit)
0: Normal
1: Error1
2 digit: Outside measurement range of temperature (low limit)
0: Normal
1: Error2
0: OFF
1: ON
2 digit: EVT1 output
3
0: OFF
1: ON
2 digit: EVT2 output
4
0: OFF
1: ON
2 digit: EVT3 output
0: OFF
1: ON
25 digit: EVT4 output
6
0: OFF
1: ON
2 digit: EVT5 output
7
0: OFF
1: ON
2 digit: EVT6 output
28, 29 digits: Transmission output 1 adjustment status flag
29 28
Status0
0 Display Mode01 During Transmission output 1 Zero adjustment
in Transmission output 1 adjustment mode
10 During Transmission output 1 Span adjustment
in Transmission output 1 adjustment mode
210, 211 digits: Transmission output 2 adjustment status flag
211 210
Status0
0 Display Mode01
During Transmission output 2 Zero adjustment
in Transmission output 2 adjustment mode
10
During Transmission output 2 Span adjustment
in Transmission output 2 adjustment mode
212, 213 digits: Cleansing status flag
213 212
Status0
0 Display Mode01 During cleansing inactive interval
10 During cleansing time1
1 During standby after cleansing
214, 215 digits: Not used (Always 0)72

10.7 DO Concentration Calibration by Communication Command
There are 3 calibration methods (like a key operation) for DO concentration calibration via communication:
DO concentration 1-point calibration mode, DO concentration 2-point calibration mode,
Concentration option calibration mode

10.7.1 Preparation(1) Clean the DO Sensor body and measurement section, and remove all moisture.
(2) Remove the storage cap of the calibration container, and replace with a calibration cap (ventilating
cap).

Calibration cap Storage cap(Fig. 10.7.1-1)(3) Keep the water, used for DO Sensor and calibration, at room temperature for approx. 30 minutes.
(4) Select a mode from Sections 10.7.2 (DO Concentration 1-point Calibration Mode), 10.7.3 (DOConcentration 2-point Calibration Mode) and 10.7.4 (Concentration Option Calibration Mode),and perform calibration.

10.7.2 DO Concentration 1-point Calibration Mode

Caution• If salinity concentration has been previously corrected, return the salinity concentration correction
value to 0 PSU, then start calibration.
[Data item 0003H (Salinity correction)]If calibration is performed with previsously corrected salinity concentration, an error will occur, or
calibration will not be performed normally.
• When using a sensor in geographically high elevation sites, perform altitude correction for accurate
calibration, then start calibration.
[Data item 0004H (Altitude correction)]
The following outlines calibration procedure.
(1) Pour approx. 10 mL of ion-exchanged water into the calibration container sponge.
(2) Insert the DO Sensor into the calibration container until the measurement section of the sensor
is situated approximately 2 cm away from the sponge.
Approx. 2 cm

(Fig. 10.7.2-1)(3) Allow it to settle, undisturbed, for 5 to 10 minutes.

Caution• Do not leave the sensor attached to the calibration container for more than 30 minutes. This will
result in dew condensation in measurement section, which will affect measurement value.
If dew condensation has occured, remove the moisture from the measurement section, then start
calibration again.
73

(4) Set Data item 0005H (DO concentration calibration mode) to 0001H.
The unit moves to DO concentration 1-point calibration mode.
If 211, 210 digits are read at Data item 0083H (Status flag 1), 01 (DO concentration 1-pointcalibration mode) will be returned.
(5) Set Data item 0006H (DO concentration calibration start) to 0001H.
1-point calibration (100% saturation calibration) starts.
If 213, 212 digits are read at Data item 0083H (Status flag 1), 01 [During 1st-point calibration (100%saturation calibration)] will be returned.
(6) Set Data item 0006H (DO concentration calibration start) to 0003H.
The measured value will be fixed, and automatic calibration will be performed.
If 213, 212 digits are read at Data item 0083H (Status flag 1), 00 (Standby) will be returned.
1-point calibration (100% saturation calibration) is completed.
(7) Set Data item 0006H (DO concentration calibration start) to 0000H.
The unit reverts to DO concentration 1-point calibration mode.
(8) Set Data item 0005H (DO concentration calibration mode) to 0000H.
The unit reverts to Display Mode or Cleansing Output Mode.
If calibration cannot be performed during 1-point calibration (100% saturation calibration) due tounstable DO concentration input or temperature correction error, etc., and if 28 digit is read at Data
item 0083H (Status flag 1), 1 (Error) will be returned.
To release the error, set Data item 0005H (DO concentration calibration mode) to 0000H.
The unit reverts to Display Mode or Cleansing Output Mode.

74

10.7.3 DO Concentration 2-point Calibration Mode

Caution• When using a sensor in geographically high elevation sites, perform altitude correction for accurate
calibration, then start calibration.
[Data item 0004H (Altitude correction)]
The following outlines calibration procedure.
(1) Pour approx. 10 mL of ion-exchanged water into the calibration container sponge.
(2) Insert the DO Sensor into the calibration container until the measurement sectionof the sensor is situated approximately 2 cm away from the sponge.
Approx. 2 cm

(Fig. 10.7.3-1)(3) Allow it to settle, undisturbed, for 5 to 10 minutes.

Caution• Do not leave the sensor attached to the calibration container for more than 30 minutes. This will
result in dew condensation in measurement section, which will affect measurement value.
If dew condensation has occured, remove the moisture from the measurement section, then start
calibration again.
(4) Set Data item 0005H (DO concentration calibration mode) to 0002H.
The unit moves to DO concentration 2-point calibration mode.
If 211, 210 digits are read at Data item 0083H (Status flag 1), 10 (DO concentration 2-pointcalibration mode) will be returned.
(5) Set Data item 0006H (DO concentration calibration start) to 0001H.
1st-point calibration (100% saturation calibration) starts.
If 213, 212 digits are read at Data item 0083H (Status flag 1), 01 [During 1st-point calibration (100%saturation calibration)] will be returned.
(6) Set Data item 0006H (DO concentration calibration start) to 0003H.
The measured value will be fixed, and automatic calibration will be performed.
If 213, 212 digits are read at Data item 0083H (Status flag 1), 00 (Standby) will be returned.
1st-point calibration (100% saturation calibration) is completed.
(7) Prepare a zero standard solution.
Zero standard solution is 100 mL of ion-exchanged water into which 5 g or more of sodium sulfite
has been added and completely dissolved.

75

(8) Take out the calibration container sponge used for 1st-point calibration, and pour the zero standard
solution into the calibration container up to the Fill Line.

(Fig. 10.7.3-2)(9) Insert the temperature sensor of the DO Sensor until it is immersed in the prepared zero standard
solution.

Caution• Insert the measurement section so that approximately 1 cm of gap is left between it and thebottom of the calibration container.
• Insert the measurement section so that air bubbles cannot attach to it.
(10) Allow it to settle, undisturbed, for at least 5 minutes to stabilize the temperature.
(11) Set Data item 0006H (DO concentration calibration start) to 0002H.
2nd-point calibration (0-point calibration) starts.
If 213, 212 digits are read at Data item 0083H (Status flag 1), 10 [During 2nd-point calibration(0-point calibration)] will be returned.
(12) Set Data item 0006H (DO concentration calibration start) to 0003H.
The measured value will be fixed, and automatic calibration will be performed.
If 213, 212 digits are read at Data item 0083H (Status flag 1), 00 (Standby) will be returned.
2nd-point calibration (0-point calibration) is completed.
2-point calibration (both 100% saturation calibration and 0-point calibration) is completed.
(13) Set Data item 0006H (DO concentration calibration start) to 0000H.
The unit reverts to DO concentration 2-point calibration mode.
(14) Set Data item 0005H (DO concentration calibration mode) to 0000H.
The unit reverts to Display Mode or Cleansing Output Mode.
If calibration cannot be performed during DO concentration 2-point calibration due to unstable
DO concentration input or temperature correction error, etc., and if 28 digit is read at Data item
0083H (Status flag 1), 1 (Error) will be returned.
To release the error, set Data item 0005H (DO concentration calibration mode) to 0000H.
The unit reverts to Display Mode or Cleansing Output Mode.

76

10.7.4 Concentration Option Calibration Mode
Immerse the DO Sensor in an aqueous solution (of which DO concentration is known), then themeasured value can be matched to the concentration.
Factory default value: 0.00 mg/L
DO concentration can be set within a range of 0.00 to 20.00 mg/L.
The following outlines calibration procedure.
(e.g.) Setting to a (already-known) concentration of 7.77 mg/L
(1) Pour the already-known concentration solution into the calibration container up to the Fill Line.

(Fig. 10.7.4-1)(2) Insert the temperature sensor of the DO Sensor until it is immersed in the poured solution.

Caution• Insert the measurement section so that approximately 1 cm of gap is left between it andthe bottom of the calibration container.
• Insert the measurement section so that air bubbles cannot attach to it.
(3) Allow it to settle, undisturbed, for at least 5 minutes to stabilize the temperature.
(4) Set Data item 0005H (DO concentration calibration mode) to 0003H.
The unit moves to Concentration option calibration mode.
If 211, 210 digits are read at Data item 0083H (Status flag 1), 11 (Concentration option
calibration mode) will be returned.
(5) Set Data item 0007H (Concentration desired value) to the desired value (7.77).
(6) Set Data item 0006H (DO concentration calibration start) to 0001H.
Concentration option calibration starts.
If 213, 212 digits are read at Data item 0083H (Status flag 1), 11 (During concentration
option calibration) will be returned.
(7) Set Data item 0006H (DO concentration calibration start) to 0003H.
The measured value will be fixed, and calibration will be performed.
If 213, 212 digits are read at Data item 0083H (Status flag 1), 00 (Standby) will be returned.
Concentration option calibration is completed.
(8) Set Data item 0006H (DO concentration calibration start) to 0000H.
The unit reverts to Concentration option calibration mode.
(9) Set Data item 0005H (DO concentration calibration mode) to 0000H.
The unit reverts to Display Mode or Cleansing Output Mode.
If errors occur during concentration option calibration, and if 28 digit is read at Data item 0083H(Status flag 1), 1 (Error) will be returned.
To release the error, set Data item 0005H (DO concentration calibration mode) to 0000H.
The unit reverts to Display Mode or Cleansing Output Mode.

77

10.8 Transmission Output 1 and 2 Adjustment

10.8.1 Transmission Output 1 Adjustment Mode
Fine adjustment of Transmission output 1 is performed.
WIL-102-DO is adjusted at the factory, however, differences may occur between the indication
value of the connected equipment (recorders, etc.) and the output value of this unit.
In this case, perform Transmission output 1 Zero adjustment and Span adjustment.
The following outlines the procedure for Transmission output 1 adjustment.
(1) Set Data item 000EH (Transmission output 1 adjustment mode) to 0001H.
The unit moves to Transmission output 1 Zero adjustment mode.
If 29, 28 digits are read at Data item 0093H (Status flag 2), 01 (During Transmission output 1 Zeroadjustment in Transmission output 1 adjustment mode) will be returned.
(2) Set Transmission output 1 Zero adjustment value at Data item 000FH (Transmission output 1 Zeroadjustment value), while viewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 1 span(3) Set Data item 000EH (Transmission output 1 adjustment mode) to 0002H.
The unit moves to Transmission output 1 Span adjustment mode.
If 29, 28 digits are read at Data item 0093H (Status flag 2), 10 (During Transmission output 1 Spanadjustment in Transmission output 1 adjustment mode) will be returned.
(4) Set Transmission output 1 Span adjustment value at Data item 0010H (Transmission output 1 Spanadjustment value), while viewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 1 span(5) Repeat steps (1) to (4) if necessary.
(6) Set Data item 000EH (Transmission output 1 adjustment mode) to 0000H.
The unit reverts to Display Mode or Cleansing Output Mode.

10.8.2 Transmission Output 2 Adjustment Mode
Fine adjustment of Transmission output 2 is performed.
WIL-102-DO is adjusted at the factory, however, differences may occur between the indication
value of the connected equipment (recorders, etc.) and the output value of this unit.
In this case, perform Transmission output 2 Zero adjustment and Span adjustment.
The following outlines the procedure for Transmission output 2 adjustment.
(1) Set Data item 0011H (Transmission output 2 adjustment mode) to 0001H.
The unit moves to Transmission output 2 Zero adjustment mode.
If 211, 210 digits are read at Data item 0093H (Status flag 2), 01 (During Transmission output 2 Zeroadjustment in Transmission output 2 adjustment mode) will be returned.
(2) Set Transmission output 2 Zero adjustment value at Data item 0012H (Transmission output 2 Zeroadjustment value), while viewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 2 span(3) Set Data item 0011H (Transmission output 2 adjustment mode) to 0002H.
The unit moves to Transmission output 2 Span adjustment mode.
If 211, 210 digits are read at Data item 0093H (Status flag 2), 10 (During Transmission output 2 Spanadjustment in Transmission output 2 adjustment mode) will be returned.
(4) Set Transmission output 2 Span adjustment value at Data item 0013H (Transmission output 2 Spanadjustment value), while viewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 2 span(5) Repeat steps (1) to (4) if necessary.
(6) Set Data item 0011H (Transmission output 2 adjustment mode) to 0000H.
The unit reverts to Display Mode or Cleansing Output Mode.

78

10.9 Notes on Programming Monitoring Software

10.9.1 How to Speed up the Scan Time
When monitoring multiple units of WIL-102-DO, set the program so that the requisite minimum piecesof data such as Data item 0080H (DO concentration), Data item 0090H (Temperature), Data item
0083H (Status flag 1), Data item 0093H (Status flag 2) can be read. For other data, set the program sothat they can be read only when their set value has been changed. This will speed up the scan time.
10.9.2 How to Read the Set Value Changes Made by the Front Keypad Operation
If any set value is changed by keypad operation, the WIL-102-DO will set [0083H (Status flag 1) 215:
Change in key operation] to 1 (Yes).
There are 2 methods of reading the set value changes made by the front keypad.
(1) Reading method 1
1 On the monitoring software side, check that [0083H (Status flag 1) 215: Change in key operation]
has been set to 1 (Yes), then read all set values.
2

Clear the [0083H (Status flag 1) 215: Change in key operation], by setting Data item 007FH (Key
operation change flag clearing) to 0001H (Clear change flag).
If [007FH (Key operation change flag clearing)] is set to [Clear change flag (0001H)] during
setting mode of this instrument, Error code 5 (35H, Shinko protocol) or Exception Code 18 (12H,
MODBUS protocol) will be returned as a negative acknowledgement. And [0083H (Status flag 1)
215: Change in key operation] cannot be cleared.
Set a program so that all set values can be read when a negative acknowledgement is returned.
3 Read all set values again after acknowledgement is returned.
(2) Reading method 2
1 On the monitoring software side, check that [0083H (Status flag 1) 215: Change in key operation]
has been set to 1 (Yes), then set 007FH (Key operation change flag clearing) to 0001H (Clearchange flag).
2

Set the program depending on acknowledgement or negative acknowledgement as follows.
When acknowledgement is returned:
Consider it as settings completed, and read all set values.
When Error code 5 (35H, Shinko protocol) or Exception code 18 (12H, MODBUS protocol) is
returned as a negative acknowledgement:
Consider it as still in setting mode, and read the requisite minimum pieces of data such as
0080H (DO concentration), 0090H (Temperature), 0083H (Status flag 1), 0093H (Status flag 2),
then return to step 1 .

Thus, programs which do not affect the scan time can be created using the methods describedabove, even if set values on the monitoring software will not be updated until settings are complete.
10.9.3 Note when sending all set values at one time
• If EVT1, EVT2, EVT3, EVT4, EVT5 or EVT6 type is changed at Data items 0014H (EVT1 type),
0022H (EVT2 type), 0030H (EVT3 type), 003EH (EVT4 type), 004CH (EVT5 type) or 005AH (EVT6type), the EVT1, EVT2, EVT3, EVT4, EVT5 or EVT6 value will default to 0 (zero).
Output status of EVT1, EVT2, EVT3, EVT4, EVT5 or EVT6 will also be initialized.
First, send the EVT1, EVT2, EVT3, EVT4, EVT5 or EVT6 type, then send the EVT1, EVT2, EVT3,
EVT4, EVT5 or EVT6 value set at Data items 0015H (EVT1 value), 0023H (EVT2 value), 0031H(EVT3 value), 003FH (EVT4 value), 004DH (EVT5 value) or 005BH (EVT6 value).

7911. Specifications
11.1 Specification of WIL-102-DO

11.1.1 Standard Specifications
RatingRated scale
Input
Input Range
DO concentration
0.00 to 20.00 mg/L
DO % saturation
0.0 to 200.0%
Oxygen partial pressure 0.0 to 150.0 kPa
Temperature
0.0 to 50.0
Input
Optical DO Sensor
Power supply
Model
WIL-102-DO
Power supply
100 to 240 V AC 50/60 Hz
Allowable voltage
85 to 264 V AC
fluctuation range
General Structure
External dimensions
Mounting
Case
Front panel
Indicating structure

Setting structure
Indication Performance
Indication accuracy
Time accuracy
Data update cycle

Resolution
0.01 mg/L
0.1%
0.1 kPa
0.1
WIL-102-DO 1
24 V AC/DC 50/60 Hz
20 to 28 V AC/DC

30 x 88 x 108 mm (W x H x D, including socket)
DIN rail
Material: Flame-resistant resin, Color: Light gray
Membrane sheet
Display
DO Display
Red LED 4-digits
Character size: 10 x 4.6 mm (H x W)
Temperature Display Red LED 4-digits
Character size: 10 x 4.6 mm (H x W)
Action indicators
PWR (Yellow)
Instrument Power ON: Lit
A1 (Red)
EVT1 output (Contact output 1) ON: Lit
A2 (Yellow)
EVT2 output (Contact output 2) ON: Lit
T/R (Yellow)
Serial communication TX output (transmitting): Lit
Setting method: Input system using membrane sheet key

Depends on the accuracy of the Optical DO Sensor.
Within 1% of setting time
5 seconds

80

Standard Function
Calibration
Signal output response
timeTransmission output 1

Transmission output
1 adjustment
Transmission
output 1 statuswhen calibrating

Transmission output 2

Transmission output
2 adjustment
Transmission output
2 status whencalibrating

DO concentration 1-point calibration, DO concentration 2-point calibration,
Concentration option calibration
Moving average is calculated from the set signal output response time, andthe resulting value is updated every Data update cycle (5 seconds) as ameasurement value. However, signal output response time will be
invalidated during DO concentration calibration mode, Transmission output 1
or 2 adjustment mode.
Converts any one of – DO concentration, water temperature, DO %saturation, or Oxygen partial pressure – to an analog signal every update
cycle, and outputs in current.
If Transmission output 1 high limit and low limit are set to the same value,
Transmission output 1 will be fixed at 4 mA DC.
Resolution
12000
Current
4 to 20 mA DC (Load resistance: Max. 550 )OutputWithin 0.3% of Transmission output 1 span
accuracy
Fine adjustment of the Transmission output 1 is performed via
Transmission output 1 Zero and Span adjustments.
Selects Transmission output 1 output status when calibrating DO
concentration.
Last value HOLD Retains the last value before DO concentration
calibration, and outputs it.
Set value HOLD
Outputs the value set in [Transmission output 1 value
HOLD when calibrating].
Measured value
Outputs the measured value when calibrating
DO concentration.
Converts any one of – DO concentration, water temperature, DO %saturation, or Oxygen partial pressure – to an analog signal every update
cycle, and outputs in current.
If Transmission output 2 high limit and low limit are set to the same value,
Transmission output 2 will be fixed at 4 mA DC.
Resolution
12000
Current
4 to 20 mA DC (Load resistance: Max. 550 )OutputWithin 0.3% of Transmission output 2 span
accuracy
Fine adjustment of the Transmission output 2 is performed via
Transmission output 2 Zero and Span adjustments.
Selects Transmission output 2 output status when calibrating DO
concentration.
Last value HOLD Retains the last value before DO concentration
calibration, and outputs it.
Set value HOLD
Outputs the value set in [Transmission output 2 value
HOLD when calibrating].
Measured value
Outputs the measured value when calibrating
DO concentration.

81

EVT output(Contact output)
ActionEVT ON side
EVT OFF side

EVT High/Low
limits independent
upper side value,
EVT High/Low
limits independent
lower side value
EVT hysteresis

Type

OutputEVT ON delaytime
EVT OFF delaytime
Output ON Time/OFF Time when
EVT Output ON
Sensor cap
replacement timer
outputON/OFF control action
DO concentration input:
0.00 to 4.00 mg/L
Water temperature input:
0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
DO concentration input:
0.00 to 20.00 mg/L
Water temperature input:
0.0 to 50.0
DO % saturation input:
0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa

DO concentration input:
0.01 to 2.00 mg/L
Water temperature input:
1.0 to 5.0
DO % saturation input:
0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa
Selectable by keypad operation• No action• DO concentration input high limit action• DO concentration input low limit action• Water temperature input high limit action• Water temperature input low limit action• DO % saturation input high limit action• DO % saturation input low limit action• Oxygen partial pressure input high limit action• Oxygen partial pressure input low limit action• Sensor cap replacement timer• Self-check output• Cleansing output• DO concentration input High/Low limits independent action• Water temperature input High/Low limits independent action• DO % saturation input High/Low limits independent action• Oxygen partial pressure input High/Low limits independent action
Relay contact 1a
3 A 250 V AC (resistive load)
Control
1 A 250 V AC (inductive load cos =0.4)
capacity
Electrical life 100,000 cycles
0 to 9999 seconds
0 to 9999 seconds
If ON time and OFF time are set, the output can be turned ON/OFF in aconfigured cycle when EVT output is ON.
The selected EVT output is turned ON after sensor cap replacement timer
value has elapsed (Sensor cap replacement timer remainder is “0”).
are alternately indicated
DO concentration measured value andon the DO Display.

82

Self-check output

Cleansing output

The selected EVT output is turned ON for the following errors.
DO Sensor communication errors have occurred, or DO
Sensor is not connected.
DO Sensor cap is not attached, or it is incorrectly attached.
Calibration error (If input errors have occurred, or if
calibration cannot be performed 30 minutes after starting
calibration)
DO Sensor internal memory deletion.
Displayed when Quality ID3 is received from the DO Sensor.
Cleansing Output Mode:
After ‘Cleansing inactive interval’ has elapsed, the selected EVT output isturned ON during the preset ‘Cleansing time’.
After ‘Standby after cleansing’ has passed, the above action is repeated.
While cleansing is being performed using ‘Cleansing time’ and ‘Standby
after cleansing’, other outputs are in OFF status.
The measured values (DO concentration, DO % saturation, Oxygen partialpressure, water temperature) are retained.
Normal programmed action will be performed, except during ‘Cleansing
Perform’.
When power is turned ON again, starts from ‘Cleansing inactive interval’.

Forced Cleansing Mode:key for approx. 3 seconds, the unit enters Forced
By pressing thecleansing mode. In Forced cleansing mode, cleansing is performed using‘Cleansing time’ and ‘Standby after cleansing’.
After cleansing action is finished, the unit automatically reverts to Cleansing
Output Mode.
key if programmed cleansing
This mode will not be accessible by theis currently being performed.
During Forced cleansing mode, if programmed cleansing action initiates
after ‘Cleansing inactive interval’ has passed, the programmed cleansing
action will not be performed in the current session.
The following operations can be carried out from an external computer.
Serial communication(1) Reading and setting of various set values(2) Reading of the DO concentration, DO % saturation, Oxygen partialpressure, temperature and status(3) Function change, adjustment(4) Reading and setting of user save area
1.2 km (Max.), Cable resistance: Within 50(Terminators are not
Cable length
minimum on both sides.)necessary, but if used, use 120
Communicationl line EIA RS-485
Communication method Half-duplex communication
Communication speed 9600, 19200, 38400 bps (Selectable by keypad)
Synchronization method Start-stop synchronization
Code form
ASCII, BinaryCommunication
Shinko protocol, MODBUS ASCII, MODBUS RTU (Selectable by keypad)
protocol8 bits/No parity, 7 bits/No parity, 8 bits/Even, 7 bits/Even, 8 bits/Odd,
Data bit/Parity
7 bits/Odd (Selectable by keypad)
Stop bit
1 bit, 2 bits (Selectable by keypad)
Error correction
Command request repeat system
Parity check, Checksum (Shinko protocol), LRC (MODBUS protocol ASCII),
Error detection
CRC-16 (MODBUS protocol RTU)
Communication
ShinkoMODBUSMODBUS
Data format
ProtocolProtocol
ASCII
RTU
Start bit1
1
1
Data bit7
7 (8) Selectable
8
Even (No parity, Odd) No parity (Even, Odd)
ParityEven
Selectable
Selectable
Stop bit1
1 (2) Selectable
1 (2) Selectable83

Insulation, Dielectric Strength
Circuit insulation
configuration

Transmission
output 1

EVT2

EVT1

CPU

Transmission
output 2PowercircuitElectrically insulated

SensorInput
RS-485

Serialcommunication
RS-485

EVT3

EVT4

EVT5

EVT6

: EVT option

Dielectric strength

Attached Function
Set value lock

Outside measurement
range

Power failurecountermeasureSelf-diagnosis
Warm-up Indication

Display sleep function

Auto-light function

Insulation Resistance: 10 M minimum, at 500 V DC
Power terminal – ground (GND): 1.5 kV AC for 1 minute
Input terminal – ground (GND): 1.5 kV AC for 1 minute
Input terminal – power terminal: 1.5 kV AC for 1 minute

Lock 1: None of the set values can be changed.
Lock 2: Only EVT1 to EVT6 values can be changed.
Lock 3: All set values can be temporarily changed.
However, they revert to their previous value after the power is turned
off because they are not saved in the non-volatile IC memory.
If inputs (DO concentration, DO % saturation, Oxygen partial pressure,
Temperature) are outside the measurement range, the following will be
indicated.
Temperature
DO Display
Input
Display
DO concentration Flashes at 20.00 or 0.00.
Measured value
DO % saturation
Flashes at 200.0 or 0.0.
Measured value
Oxygen partial
Flashes at 150.0 or 0.0.
Measured value
pressure
Temperature
Measured value
Flashes at 50.0 or 0.0.
The setting data is backed up in the non-volatile IC memory.
The CPU is monitored by a watchdog timer, and if an abnormal status
occurs, the WIL-102-DO is switched to warm-up status.
For approx. 8 seconds after the power is switched ON, characters below
are indicated on the DO Display and Temperature Display.
Display
Contents
DO Display
Temperature Display[Version number (e.g.) 1.00]
If no operation occurs for the duration of the previously set indication time,the displays will go off.
By pressing any key, the display re-lights. If the Indication time is set to
00.00, the displays remain lit, and this function is disabled.
Automatically measures and controls brightness of the DO Display,
Temperature Display and action indicators.

84

Error indication

Error
Code

Description
Non-volatile IC memory error
DO Sensor communication errors have occurred,or DO Sensor is not connected.
After a command is sent to the DO Sensor, if there
is no response for 500 ms, the command will besent again.
If no response occurs 4 times consecutively, thiserror code will be indicated.
If communication status returns to normal, the unit
will automatically return to normal status.
When this error code is displayed, the previous
measured value is retained.
DO Sensor cap is not attached, or it is incorrectly
attached.
Calibration error (when input errors have occurred,or when calibration cannot be performed 30 minutes
after starting calibration)
DO Sensor internal memory deletion.
Displayed when Quality ID3 is received from the
DO Sensor.

Other
Power consumption
Ambient temperature
Ambient humidity
WeightEnvironmental spec
Accessories included
Accessories soldseparately

Occurrence
ConstantlyWhenmeasuringandcalibrating

WhencalibratingWhenmeasuringandcalibrating

Approx. 10 VA
0 to 50
35 to 85 %RH (Non-condensing)
Approx. 200 g (including socket)
RoHS directive
Unit label: 1 sheet
Instruction manual: 1 copy
Wire harness WJ (3 m): 4 lengths (when the EVT option is ordered)
Socket ASK-001-1 (Finger-safe, terminal screw fall prevention)

11.1.2 Optional Specifications
EVT Output (Option Code: EVT)
EVT output
Same as standard EVT except the ‘output’.
OutputOpen collector
0.1 A 24 V DC
Control capacity
11.2 DO Sensor Specifications
Model
DOS-20Power supply
12 to 36 V DC
Sensor cap
One (1) year after installing the DO Sensor (Recommended)
replacement frequency
Sensor cap storage
Two (2) years from the date of manufacture (When storing in the
perioddesignated container)
Storage temperature: 1 to 60
Measuring water
0 to 50 (Not freezing)
temperature
Material
ABS
External dimensions
Approx. 44 x 203 mm
WeightApprox. 850 g (including 10 m cable)
Degree of protection
IP68 (Underwater type, maximum depth of 200 m)
Accessories soldDO Sensor attachment:
DA-1
separately
Sensor cap for replacement:
DOS-CP
Stanchion pole:
PS-1
Fixing bracket for stanchion pole: PS-TK

85

12. Troubleshooting
Error codes and solutions to problems are described below.
12.1 Error Codes
Error CodeDescription
Non-volatile IC memory error
DO Sensor communication errors have occurred, or DO Sensor is notconnected.
After a command is sent to the DO Sensor, if there is no response for
500 ms, the command will be sent again.
If no response occurs 4 times consecutively, this error code will be
indicated.
If communication status returns to normal, the unit will automatically
return to normal status.
When this error code is displayed, the previous measured value isretained.
DO Sensor cap is not attached, or it is incorrectly attached.
Calibration error (when input errors have occurred, or when calibration
cannot be performed 30 minutes after starting calibration)
DO Sensor internal memory deletion.
Displayed when Quality ID3 is received from the DO Sensor.

Occurrence
ConstantlyWhenmeasuringandcalibrating

WhencalibratingWhenmeasuringandcalibrating

12.2 Solutions to Problems
If any malfunction occurs, refer to the following items after checking that power is being supplied to theWIL-102-DO.

12.2.1 Indication
Problem
The DO Display/
Temperature Display
are unlit.
The DO Display/
Temperature Display
are dark.
Indication of the DO
Display/Temperature
Display is unstable orirregular.

Possible Cause
Solution
The time set in [Indication time (p.34)] If any key is pressed while displays
has passed.
are unlit, it will re-light.
Set the Indication time to a suitable
time-frame.
(Enabled) is selected in
Select(Disabled).
[Auto-light function (p.34)].

is flashingon the Temperature
Display.

DO concentration calibration may nothave finished.
Specification of DO Sensor may not
be suitable.
There may be equipment thatinterferes with or makes noise near
the WIL-102-DO.
DO Sensor communication errors
have occurred, or the DO Sensor is
not connected.

is flashingon the Temperature
Display.

This occurs when DO Sensor cap is
not attached, or when it is incorrectly
attached.

86

Perform DO concentration
calibration.
Replace the sensor with a suitableone.
Keep WIL-102-DO clear of any
potentially disruptive equipment.
Turn the power OFF, and check thewiring of the DO Sensor.
If the DO Sensor is malfunctioning,
repair or replace the sensor.
For correct attachment, refer to
Section “4.4 Attaching the Sensor
Cap” (p.13).

Problemis flashingon the Temperature
Display.

Possible Cause
Calibration error

is flashingon the Temperature
Display.

Internal memory is defective.

12.2.2 Key Operation
Problem
Unable to set values.
The values do notchange by,keys.
Settings are impossible
except EVT value.
The values do notchange by,keys
Unable to enter Forced
cleansing mode.

Unable to enter acalibration mode.

Possible Cause(Lock 1) is selected in [Setvalue lock (p. 34)].

Solution
Remove dirt or air bubbles from themeasurement section, and calibrate
again.
If errors occur again, repair or
replace the DO Sensor.
If salinity concentration correction
has been performed, return thesalinity concentration correction
value to 0 PSU, and calibrate
again.
Contact our agency or us.

SelectSolution(Unlock).

(Lock 2) is selected in [Setvalue lock (p. 34)].

Select(Unlock).

(Cleansing output) is notselected in any of [EVT1 to EVT6
types (pp. 26, 31)].
Cleansing action is performing using
the ‘Cleansing time’ and ‘Standby
after cleansing’.
(Lock 1),
(Lock 2)
(Lock 3) has beenor
selected in [Set value lock (p.34)].
(Cleansing output) has been
selected in any of [EVT1 to EVT6
types (pp. 26, 31)], and cleansing
action is performing using the‘Cleansing time’ and ‘Standby after
cleansing’.

(Cleansing output)
Selectin any of [EVT1 to EVT6 types (pp.
26, 31)].
Execute Forced cleansing after
cleansing action is completed.

87

Select(Unlock).

Perform calibration after cleansing
action is completed.

12.2.3 Communication
Check that power is being supplied to the master and slave that customers use. If communication
failure still occurs, check the following.
Problem
Communication failure

Although communication is occurring, theresponse is negative
acknowledgement.

Possible Cause
Communication cable is not securely
connected, or is disconnected/
defective.
Incorrect wiring of the communication
cable and/or connector

Solution
Check the communication cableand connector.

Imperfect contact between thecommunication cable and theconnector, or between thecommunication connector andinstrument port
Communication speed of the slave
does not match that of the master.
The data bit, parity and stop bit of themaster do not correspond to those of
the slave.
The instrument number (address) of
the slave does not correspond to thatof the command.
The instrument numbers (addresses)
are duplicated in multiple slaves.
Make sure that the program isappropriate for the transmission
timing.
A non-existent command code has
been sent.
The setting command data exceeds
the setting range of the slave.
The WIL-102-DO cannot be set whilecalibration is being performed.
The WIL-102-DO is in front keypad
operation setting mode.

Check the communication cableand connector.

88

Check the communication cableand connector.

Check the communication speedof the slave and master.
Check the data bit, parity andstop bit of the master and theslave.
Check the instrument number(address) of the slave.
Check the instrument numbers(addresses) of the slave.
Check the program.

Check the command code.
Check the setting range.
Check the slave status.
Return the unit to Display Modeor Cleansing Output Mode.

13. Character Tables
The following shows our character tables. Use data column for your reference.
Setting Groups
Character

Setting GroupDO Concentration Input Group
Transmission Output 1 Group
Transmission Output 2 Group
EVT1 Action GroupEVT2 Action GroupEVT3 Action Group (*)
EVT4 Action Group (*)
EVT5 Action Group (*)
EVT6 Action Group (*)
Communication Group
Cleansing Group
Basic Function Group
Self-Check Group
Data Clear Group(*) Available only when EVT

output (EVT option) is ordered.

DO Concentration Calibration
Character
Setting Item, Setting Range
DO concentration 1-point calibration
Measuredmode
value (*)
Measuredvalue (*)

DO concentration 2-point calibration
mode

Concentration

Concentration option calibration
mode
Setting range: 0.00 to 20.00 mg/L

desired value(*) DO concentration measured value flashes.

89

Factory Default

0.00 mg/L

Data

Transmission Output 1 Adjustment
Character
Setting Item, Setting Range
Factory Default
Transmission output 1 Zero
0.00 mg/L
adjustment
Setting range: 5.00% of Transmission output 1 span
Transmission output 1 Span
0.00 mg/L
adjustment
Setting range: 5.00% of Transmission output 1 span
Transmission Output 2 Adjustment
Character
Setting Item, Setting Range
Factory Default
Transmission output 2 Zero
0.00 mg/L
adjustment
Setting range: 5.00% of Transmission output 2 span
Transmission output 2 Span
0.00 mg/L
adjustment
Setting range: 5.00% of Transmission output 2 span
DO Concentration Input Group
Character
Setting Item, Setting Range
Signal output response time
Setting range: 5 to 600 seconds
Salinity correction
Setting range: 0 to 42 PSU
Altitude correction
Setting range: 0 to 5000 m

Factory Default
60 seconds

Data

Data

0 PSU
0m

Transmission Output 1 Group
Character
Setting Item, Setting Range
Factory Default
Transmission output 1 type
DO concentration transmission: DO concentration transmission: Water temperature transmission: DO % saturation transmission: Oxygen partial pressure transmission
Transmission output 1 high limit
20.00 mg/L
Setting range:
Transmission output 1 low limit to Measurement range high limit
Transmission output 1 low limit
0.00 mg/L
Setting range:
Measurement range low limit to Transmission output 1 high limit
Transmission output 1 status
Last value HOLD
when calibrating: Last value HOLD (Retains the last value before calibrating DO
concentration, and outputs it.): Set value HOLD (Outputs the value set in [Transmission output
1 value HOLD when calibrating].): Measured value (Outputs the measured value when calibrating
DO concentration.)Transmission output 1 value HOLD
0.00 mg/L
when calibrating
Setting range:
Measurement range low limit to Measurement range high limit

90

Data

Data

Transmission Output 2 Group
Character
Setting Item, Setting Range
Factory Default
Transmission output 2 type
DO concentration transmission: DO concentration transmission: Water temperature transmission: DO % saturation transmission: Oxygen partial pressure transmission
Transmission output 2 high limit
20.00 mg/L
Setting range:
Transmission output 2 low limit to Measurement range high limit
Transmission output 2 low limit
0.00 mg/L
Setting range:
Measurement range low limit to Transmission output 2 high limit
Transmission output 2 status
Last value HOLD
when calibrating: Last value HOLD (Retains the last value before calibrating DO
concentration, and outputs it.): Set value HOLD (Outputs the value set in [Transmission output
2 value HOLD when calibrating].): Measured value (Outputs the measured value when calibrating
DO concentration.)Transmission output 2 value HOLD
0.00 mg/L
when calibrating
Setting range:
Measurement range low limit to Measurement range high limit

91

Data

EVT1 Action Group
Character
Setting Item, Setting Range
Factory Default
EVT1 type
No action: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action: DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer: Self-check output: Cleansing output: DO concentration input High/Low limits independent action: Water temperature input High/Low limits independent action: DO % saturation input High/Low limits independent action: Oxygen partial pressure input High/Low limits independentaction
DO concentration input: 0.00 mg/L
EVT1 value (*1)
Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT1 hysteresis type (*2)
Reference Value: Medium Value: Reference Value
DO concentration input: 0.01 mg/L
EVT1 ON side (*2)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
DO concentration input: 0.01 mg/L
EVT1 OFF side (*3)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa(*1) If(No action),(Sensor cap replacement timer),

Data(Self-check output) or(Cleansing output) is selected in [EVT1 type], this setting item and all subsequent items will not be available.
(*2) Not available if(DO concentration input High/Low limits independent action),

input High/Low limits independent action),(Water temperature(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT1 type].
(*3) Not available if(Medium Value) is selected in [EVT1 hysteresis type].

92

Character(*) IfSetting Item, Setting Range
Factory Default
EVT1 ON delay time
0 seconds
Setting range: 0 to 9999 seconds
EVT1 OFF delay time
0 seconds
Setting range: 0 to 9999 seconds
Output ON Time when EVT1
0 seconds
Output ON
Setting range: 0 to 9999 seconds
Output OFF Time when EVT1
0 seconds
Output ON
Setting range: 0 to 9999 seconds
DO concentration input: 0.00 mg/L
EVT1 High/Low limits
independent lower side value Water temperature input: 0.0(*)
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT1 High/Low limits
DO concentration input: 0.00 mg/L
independent upper side value Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT1 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa(DO concentration input High/Low limits independent action),

High/Low limits independent action),

Data(Water temperature input(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT1 type], this setting
item and all subsequent items will be available.

93

EVT2 Action Group
Character
Setting Item, Setting Range
Factory Default
EVT2 type
No action: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action: DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer: Self-check output: Cleansing output: DO concentration input High/Low limits independent action: Water temperature input High/Low limits independent action: DO % saturation input High/Low limits independent action: Oxygen partial pressure input High/Low limits independentaction
DO concentration input: 0.00 mg/L
EVT2 value (*1)
Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT2 hysteresis type (*2)
Reference Value: Medium Value: Reference Value
DO concentration input: 0.01 mg/L
EVT2 ON side (*2)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
DO concentration input: 0.01 mg/L
EVT2 OFF side (*3)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa(*1) If(No action),(Sensor cap replacement timer),

Data(Self-check output) or(Cleansing output) is selected in [EVT2 type], this setting item and all subsequent items will not be available.
(*2) Not available if(DO concentration input High/Low limits independent action),

input High/Low limits independent action),(Water temperature(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT2 type].
(*3) Not available if(Medium Value) is selected in [EVT2 hysteresis type].

94

Character(*) IfSetting Item, Setting Range
Factory Default
EVT2 ON delay time
0 seconds
Setting range: 0 to 9999 seconds
EVT2 OFF delay time
0 seconds
Setting range: 0 to 9999 seconds
Output ON Time when EVT2
0 seconds
Output ON
Setting range: 0 to 9999 seconds
Output OFF Time when EVT2
0 seconds
Output ON
Setting range: 0 to 9999 seconds
DO concentration input: 0.00 mg/L
EVT2 High/Low limits
independent lower side value Water temperature input: 0.0(*)
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT2 High/Low limits
DO concentration input: 0.00 mg/L
independent upper side value Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT2 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa(DO concentration input High/Low limits independent action),

High/Low limits independent action),

Data(Water temperature input(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT2 type], this setting
item and all subsequent items will be available.

95

EVT3 Action Group
Character
Setting Item, Setting Range
Factory Default
EVT3 type
No action: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action: DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer: Self-check output: Cleansing output: DO concentration input High/Low limits independent action: Water temperature input High/Low limits independent action: DO % saturation input High/Low limits independent action: Oxygen partial pressure input High/Low limits independentaction
DO concentration input: 0.00 mg/L
EVT3 value (*1)
Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT3 hysteresis type (*2)
Reference Value: Medium Value: Reference Value
DO concentration input: 0.01 mg/L
EVT3 ON side (*2)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
DO concentration input: 0.01 mg/L
EVT3 OFF side (*3)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa(*1) If(No action),(Sensor cap replacement timer),

Data(Self-check output) or(Cleansing output) is selected in [EVT3 type], this setting item and all subsequent items will not be available.
(*2) Not available if(DO concentration input High/Low limits independent action),

input High/Low limits independent action),(Water temperature(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT3 type].
(*3) Not available if(Medium Value) is selected in [EVT3 hysteresis type].

96

Character(*) IfSetting Item, Setting Range
Factory Default
EVT3 ON delay time
0 seconds
Setting range: 0 to 9999 seconds
EVT3 OFF delay time
0 seconds
Setting range: 0 to 9999 seconds
Output ON Time when EVT3
0 seconds
Output ON
Setting range: 0 to 9999 seconds
Output OFF Time when EVT3
0 seconds
Output ON
Setting range: 0 to 9999 seconds
DO concentration input: 0.00 mg/L
EVT3 High/Low limits
independent lower side value Water temperature input: 0.0(*)
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT3 High/Low limits
DO concentration input: 0.00 mg/L
independent upper side value Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT3 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa(DO concentration input High/Low limits independent action),

High/Low limits independent action),

Data(Water temperature input(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT3 type], this setting
item and all subsequent items will be available.

97

EVT4 Action Group
Character
Setting Item, Setting Range
Factory Default
EVT4 type
No action: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action: DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer: Self-check output: Cleansing output: DO concentration input High/Low limits independent action: Water temperature input High/Low limits independent action: DO % saturation input High/Low limits independent action: Oxygen partial pressure input High/Low limits independentaction
DO concentration input: 0.00 mg/L
EVT4 value (*1)
Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT4 hysteresis type (*2)
Reference Value: Medium Value: Reference Value
DO concentration input: 0.01 mg/L
EVT4 ON side (*2)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
DO concentration input: 0.01 mg/L
EVT4 OFF side (*3)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa(*1) If(No action),(Sensor cap replacement timer),

Data(Self-check output) or(Cleansing output) is selected in [EVT4 type], this setting item and all subsequent items will not be available.
(*2) Not available if(DO concentration input High/Low limits independent action),

input High/Low limits independent action),(Water temperature(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT4 type].
(*3) Not available if(Medium Value) is selected in [EVT4 hysteresis type].

98

Character(*) IfSetting Item, Setting Range
Factory Default
EVT4 ON delay time
0 seconds
Setting range: 0 to 9999 seconds
EVT4 OFF delay time
0 seconds
Setting range: 0 to 9999 seconds
Output ON Time when EVT4
0 seconds
Output ON
Setting range: 0 to 9999 seconds
Output OFF Time when EVT4
0 seconds
Output ON
Setting range: 0 to 9999 seconds
DO concentration input: 0.00 mg/L
EVT4 High/Low limits
independent lower side value Water temperature input: 0.0(*)
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT4 High/Low limits
DO concentration input: 0.00 mg/L
independent upper side value Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT4 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa(DO concentration input High/Low limits independent action),

High/Low limits independent action),

Data(Water temperature input(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT4 type], this setting
item and all subsequent items will be available.

99

EVT5 Action Group
Character
Setting Item, Setting Range
Factory Default
EVT5 type
No action: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action: DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer: Self-check output: Cleansing output: DO concentration input High/Low limits independent action: Water temperature input High/Low limits independent action: DO % saturation input High/Low limits independent action: Oxygen partial pressure input High/Low limits independentaction
DO concentration input: 0.00 mg/L
EVT5 value (*1)
Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT5 hysteresis type (*2)
Reference Value: Medium Value: Reference Value
DO concentration input: 0.01 mg/L
EVT5 ON side (*2)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
DO concentration input: 0.01 mg/L
EVT5 OFF side (*3)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa(*1) If(No action),(Sensor cap replacement timer),

Data(Self-check output) or(Cleansing output) is selected in [EVT5 type], this setting item and all subsequent items will not be available.
(*2) Not available if(DO concentration input High/Low limits independent action),

input High/Low limits independent action),(Water temperature(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT5 type].
(*3) Not available if(Medium Value) is selected in [EVT5 hysteresis type].

100

Character(*) IfSetting Item, Setting Range
Factory Default
EVT5 ON delay time
0 seconds
Setting range: 0 to 9999 seconds
EVT5 OFF delay time
0 seconds
Setting range: 0 to 9999 seconds
Output ON Time when EVT5
0 seconds
Output ON
Setting range: 0 to 9999 seconds
Output OFF Time when EVT5
0 seconds
Output ON
Setting range: 0 to 9999 seconds
DO concentration input: 0.00 mg/L
EVT5 High/Low limits
independent lower side value Water temperature input: 0.0(*)
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT5 High/Low limits
DO concentration input: 0.00 mg/L
independent upper side value Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT5 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa(DO concentration input High/Low limits independent action),

High/Low limits independent action),

Data(Water temperature input(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT5 type], this setting
item and all subsequent items will be available.

101

EVT6 Action Group
Character
Setting Item, Setting Range
Factory Default
EVT6 type
No action: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action: DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer: Self-check output: Cleansing output: DO concentration input High/Low limits independent action: Water temperature input High/Low limits independent action: DO % saturation input High/Low limits independent action: Oxygen partial pressure input High/Low limits independentaction
DO concentration input: 0.00 mg/L
EVT6 value (*1)
Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT6 hysteresis type (*2)
Reference Value: Medium Value: Reference Value
DO concentration input: 0.01 mg/L
EVT6 ON side (*2)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
DO concentration input: 0.01 mg/L
EVT6 OFF side (*3)
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa(*1) If(No action),(Sensor cap replacement timer),

Data(Self-check output) or(Cleansing output) is selected in [EVT6 type], this setting item and all subsequent items will not be available.
(*2) Not available if(DO concentration input High/Low limits independent action),

input High/Low limits independent action),(Water temperature(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT6 type].
(*3) Not available if(Medium Value) is selected in [EVT6 hysteresis type].

102

Character(*) IfSetting Item, Setting Range
Factory Default
EVT6 ON delay time
0 seconds
Setting range: 0 to 9999 seconds
EVT6 OFF delay time
0 seconds
Setting range: 0 to 9999 seconds
Output ON Time when EVT6
0 seconds
Output ON
Setting range: 0 to 9999 seconds
Output OFF Time when EVT6
0 seconds
Output ON
Setting range: 0 to 9999 seconds
DO concentration input: 0.00 mg/L
EVT6 High/Low limits
independent lower side value Water temperature input: 0.0(*)
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT6 High/Low limits
DO concentration input: 0.00 mg/L
independent upper side value Water temperature input: 0.0
DO % saturation input: 0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT6 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa(DO concentration input High/Low limits independent action),

High/Low limits independent action),

Data(Water temperature input(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure input High/Low limits independent action) is selected in [EVT6 type], this setting
item and all subsequent items will be available.

103

Communication Group
Character
Setting Item, Setting Range
Communication protocol: Shinko protocol: MODBUS ASCII mode
: MODBUS RTU mode
Instrument number
0 to 95
Communication speed: 9600 bps: 19200 bps: 38400 bps
Data bit/Parity: 8 bits/No parity: 7 bits/No parity: 8 bits/Even: 7 bits/Even: 8 bits/Odd: 7 bits/Odd
Stop bit: 1 bit: 2 bits
Cleansing Group
Character

Setting Item, Setting Range
Cleansing time
Setting range: 10 to 120 seconds
Cleansing inactive interval(None), 10 to 240 minutes
Standby after Cleansing
Setting range: 0 to 60 seconds

Factory Default
Shinko protocol

09600 bps

7 bits/Even

1 bit

Factory Default
30 seconds

Data

OFF (None)0 seconds

Basic Function Group
Character
Setting Item, Setting Range
Factory Default
Set value lock
Unlock(Unlock): All set values can be changed.
(Lock 1): None of the set values can be changed.
(Lock 2): Only EVT1 to EVT6 values can be changed.
(Lock 3): All set values can be temporarily changed. However,they revert to their previous value after the power isturned off because they are not saved in the
non-volatile IC memory.
Auto-light function
Disabled: Disabled: Enabled
Indication time
00.00 (Remains lit)
Setting range:
00.00 (Remains lit)
00.01 to 60.00 (Minutes.Seconds)

104

Data

Data

Character

Setting Item, Setting Range
EVT output when input errors occur: Enabled: Disabled
EVT1 value
Setting range: 0 to 1095 days
EVT1 ON delay time
Setting range: 0 to 9999 seconds
EVT1 OFF delay time
Setting range: 0 to 9999 seconds
EVT2 value
Setting range: 0 to 1095 days
EVT2 ON delay time
Setting range: 0 to 9999 seconds
EVT2 OFF delay time
Setting range: 0 to 9999 seconds
EVT3 value (*)
Setting range: 0 to 1095 days
EVT3 ON delay time (*)
Setting range: 0 to 9999 seconds
EVT3 OFF delay time (*)
Setting range: 0 to 9999 seconds
EVT4 value (*)
Setting range: 0 to 1095 days
EVT4 ON delay time (*)
Setting range: 0 to 9999 seconds
EVT4 OFF delay time (*)
Setting range: 0 to 9999 seconds
EVT5 value (*)
Setting range: 0 to 1095 days
EVT5 ON delay time (*)
Setting range: 0 to 9999 seconds
EVT5 OFF delay time (*)
Setting range: 0 to 9999 seconds
EVT6 value (*)
Setting range: 0 to 1095 days
EVT6 ON delay time (*)
Setting range: 0 to 9999 seconds
EVT6 OFF delay time (*)
Setting range: 0 to 9999 seconds
Sensor cap replacement timer
remainder
Setting range: 0 to 1095 days(*) Available only when EVT

output (EVT option) is ordered.

105

Factory Default
Disabled

365 days
0 seconds
0 seconds
365 days
0 seconds
0 seconds
365 days
0 seconds
0 seconds
365 days
0 seconds
0 seconds
365 days
0 seconds
0 seconds
365 days
0 seconds
0 seconds
365 days

DataSelf-Check Group
Character
All lit
LED all lit mode
Individually lit LED individual lit mode
Key input mode
Temperature Display

Output mode
Temperature Display

Measuredvalue

Data Clear Group
Character

Input mode
DO Display

Mode

Key Input
When no key is pressed
When thekey is pressed
When thekey is pressed
When 2 or more keys are pressed simultaneously
OutputAll EVT outputs: OFF, Transmission output 1 and 2: 4 mA DC
EVT1 output ON
EVT2 output ON
EVT3 output ON
EVT4 output ON
EVT5 output ON
EVT6 output ON
Transmission output 1: 20 mA DC
Transmission output 2: 20 mA DC
Temperature Display
DO concentration measured value
Water temperature measured value
DO % saturation measured value
Oxygen partial pressure measured value
Sensor cap serial number

Setting Item, Setting Range
Data clear selection: Calibration value: Set value
Data clear Stop/Perform: Data clear Stop
: Data clear Perform

106

Factory Default
Calibration value

Data clear Stop

Data

Error Codes
The following error codes are indicated on the Temperature Display.
Error CodeDescription
Non-volatile IC memory error
DO Sensor communication errors have occurred, or DO Sensor is
not connected.
After a command is sent to the DO Sensor, if there is no response
for 500 ms, the command will be sent again.
If no response occurs 4 times consecutively, this error code will be
displayed.
If communication status returns to normal, the unit will automatically
return to normal status.
When this error code is displayed, the previous measured value isretained.
DO Sensor cap is not attached, or it is incorrectly attached.
Calibration error (when input errors have occurred, or when calibration cannot be performed 30 minutes after starting calibration)
DO Sensor internal memory deletion.
Displayed when Quality ID3 is received from the DO Sensor.

107

Occurrence
ConstantlyWhenmeasuringand calibrating

WhencalibratingWhenmeasuringand calibrating14. Key Operation Flowchart

Abbreviations:
Meas.value: Measured value, DO: Dissolved oxygen,
Temp: Temperature, Calib: Calibration, Adjust: Adjustment,
C. Desired vaue: Concentration desired value,
Trans: Transmission

POWER ON

Display Mode or Cleansing Output Mode (*1)
Meas.value (*2) DO Concentration /Meas.value (*3) Temp. Display Mode

Meas.value (*2)
Meas.value (*3)

DO % Saturation/
Temp. Display Mode

Meas.value (*2)
Meas.value (*3)

Oxygen Partial Pressure /Temp. Display Mode+

Meas.value (*2)

DO Concentration
1-point Calib. Mode(P.41)DO Concentration
2-point Calib. Mode(P.43)

Meas.value (*4)

1-point calibration(100% saturation calib.)

Meas.value (*4)

1st-point calibration (*5)(100% saturation calib.)

Meas.value (*4)

2nd-point calibration(0-point calibration)

Meas.value (*4)

Concentration Option
Auto Calibration(3 sec)Meas.value (*2)

Concentration Option
C.Desired value Calibration Mode
(P.45)(3 sec)Meas.value (*2)
Meas.value (*3)

Forced Cleansing
Mode(P.54)

Automatically proceeds after cleansing action.

+(3 sec)Transmission output
1 Zero adjust. (P.47)

Transmission output
1 Span adjust. (P.47)+(3 sec)Transmission output
2 Zero adjust. (P.48)

Transmission output
2 Span adjust. (P.48)

DO Concentration
Input Group

Transmission
Output 1 Group

Transmission
Output 2 Group

Signal output
response time (P.23)

Transmission output
1 type(P.24)

Transmission output
2 type(P.25)

Salinity correction(P.23)

Transmission output
1 high limit(P.24)

Transmission output
2 high limit(P.25)

Altitude correction(P.23)

Transmission output
1 low limit(P.24)

Transmission output
2 low limit(P.25)

Trans. output 1 statuswhen calibrating (P.24)

Trans. output 2 statuswhen calibrating (P.25)

Trans. output 1 value
HOLD when calibrating(P.24)

Trans. output 2 value
HOLD when calibrating(P.25)

About Setting Item
Signal output• Upper left: DO Display: Indicates the setting item characters. • Lower left: Temperature Display:
response time (P.23) Indicates the factory default. • Right side: Indicates the setting item and reference page.
EVT3 Action
Group

Setting item in shaded section will be displayed only when the corresponding option is ordered.

(*1) In Cleansing Output Mode, the measured value (DO concentration, DO % saturation, Oxygen partial pressure, temperature) is held during
cleansing action (using ‘Cleansing time’ and ‘Standby after cleansing’).
(*2) Indicates the measured value of DO concentration, DO % saturation or Oxygen partial pressure.
(*3) Indicates temperature measured value. (*4) During calibration, DO concentration measured value flashes.
(*5) If errors occur during 1st-point calibration (100% saturation calibration) in 2-point Calibration Mode, the unit will revert to the Display Mode or
Cleansing Output Mode by pressing the
or
key.

108

1

2

Abbreviation: H/L: High/Low limits

EVT1 ActionGroup

EVT2 Action
Group (*6)

EVT1 type

EVT2 type(P.26)

EVT1 value

1

EVT3 Action
Group (*7)

3

EVT3 type(P.26)

EVT2 value(P.26)
EVT3 value(P.28)(P.28)(P.28)

EVT1 hysteresis
type(P.28)

EVT2 hysteresis
type(P.28)

EVT3 hysteresis
type(P.28)

EVT1 ON side
(P.28)

EVT2 ON side
(P.28)

EVT3 ON side
(P.28)

EVT1 OFF side
(P.28)

EVT2 OFF side
(P.28)

EVT3 OFF side
(P.28)

EVT1 ON delaytime(P.29)

EVT2 ON delaytime(P.29)

EVT3 ON delaytime(P.29)

EVT1 OFF delaytime(P.29)

EVT2 OFF delaytime(P.29)

EVT3 OFF delaytime(P.29)

Output ON time
when EVT1 output ON(P.29)
Output OFF time
when EVT1 output ON(P.29)
EVT1 H/L independent
lower side value(P.29)

Output ON time
when EVT2 output ON(P.29)

Output ON time
when EVT3 output ON(P.29)

Output OFF time
when EVT2 output ON(P.29)
EVT2 H/L independent
lower side value(P.29)

Output OFF time
when EVT3 output ON(P.29)
EVT3 H/L independent
lower side value(P.29)

EVT1 H/L independent
upper side value(P.30)

EVT1 H/L independent
upper side value(P.30)
EVT2 hysteresis(P.30)

EVT1 H/L independent
upper side value(P.30)
EVT3 hysteresis(P.30)

EVT1 hysteresis(P.30)

4

2

Key Operation,,: Press the,orkey. The unit will proceed to the next setting item, illustrated by an arrow.
•+(3 sec): Press and hold theandkeys (in that order) together for 3 seconds. The unit will proceed to the next mode.
•(3 sec),(3 sec): Press theor
key for 3 seconds. The unit will proceed to the next setting item, illustrated by an arrow.
•+ (3 sec): Press and hold theandkeys (in that order) together for 3 seconds. The unit will proceed to the next mode.
•+ (3 sec): Press and hold theandkeys (in that order) together for 3 seconds. The unit will proceed to the next mode.
• To set each item, use theorkey, and register the set value with thekey.
• If thekey is pressed for 3 seconds at any setting item, the unit will revert to Display Mode or Cleansing Output Mode.
•(*6) Action, indication condition and setting range of the EVT2 Action Group are the same EVT1 Action Group.
Substitute EVT1 character ( ) with EVT2 character ( ). Refer to EVT1 Action Group (pp. 26 to 30).
(*7) Action, indication condition and setting range of the EVT3 Action Group are the same EVT1 Action Group.
Substitute EVT1 character ( ) with EVT3 character ( ). Refer to EVT1 Action Group (pp. 26 to 30).

109

Abbreviation: H/L: High/Low limits

3

EVT4 Action
Group (*8)

EVT5 Action
Group (*9)

EVT4 type

EVT6 Action
Group (*10)

EVT5 type(P.26)

EVT4 value

5

EVT6 type(P.26)

EVT5 value(P.26)
EVT6 value(P.28)(P.28)(P.28)

EVT4 hysteresis
type(P.28)

EVT5 hysteresis
type(P.28)

EVT6 hysteresis
type(P.28)

EVT4 ON side
(P.28)

EVT5 ON side
(P.28)

EVT6 ON side
(P.28)

EVT4 OFF side
(P.28)

EVT5 OFF side
(P.28)

EVT6 OFF side
(P.28)

EVT4 ON delaytime(P.29)

EVT5 ON delaytime(P.29)

EVT6 ON delaytime(P.29)

EVT4 OFF delaytime(P.29)

EVT5 OFF delaytime(P.29)

EVT6 OFF delaytime(P.29)

Output ON time
when EVT4 output ON(P.29)

Output ON time
when EVT5 output ON(P.29)

Output ON time
when EVT6 output ON(P.29)

Output OFF time
when EVT4 output ON(P.29)
EVT4 H/L independent
lower side value(P.29)

Output OFF time
when EVT5 output ON(P.29)

Output OFF time
when EVT6 output ON(P.29)

EVT5 H/L independent
lower side value(P.29)

EVT6 H/L independent
lower side value(P.29)

EVT4 H/L independent
upper side value(P.30)

EVT5 H/L independent
upper side value(P.30)
EVT5 hysteresis(P.30)

EVT6 H/L independent
upper side value(P.30)
EVT6 hysteresis(P.30)

EVT4 hysteresis(P.30)

46(*8) Action, indication condition and setting range of the EVT4 Action Group are the same EVT1 Action Group.
Substitute EVT1 character ( ) with EVT4 character ( ). Refer to EVT1 Action Group (pp. 26 to 30).
(*9) Action, indication condition and setting range of the EVT5 Action Group are the same EVT1 Action Group.
Substitute EVT1 character ( ) with EVT5 character ( ). Refer to EVT1 Action Group (pp. 26 to 30).
(*10) Action, indication condition and setting range of the EVT6 Action Group are the same EVT1 Action Group.
Substitute EVT1 character ( ) with EVT6 character ( ). Refer to EVT1 Action Group (pp. 26 to 30).

110

5

Communication
Group

CleansingGroup

Basic Function
Group

Communication
protocol(P.32)

Cleansing time
(P.33)

Set value lock

Instrument number(P.32)

Cleansing inactive
interval(P.33)

Auto-light function(P.34)

Communication
speed(P.32)

Standby after
cleansing(P.33)

Indication time
(P.34)(P.34)

Data bit/Parity(P.32)

EVT output when input
errors occur (P.34)

Stop bit

EVT1 value(P.32)

7

8
9(P.34)
EVT1 ON delay
time(P.35)
EVT1 OFF delay
time(P.35)
EVT2 value(P.35)
EVT2 ON delay
time(P.35)
EVT2 OFF delay
time(P.35)
EVT3 value(P.35)

6

10

111

Self-Check Group

Data Clear Group

LED all lit mode
(P.38)

Data clear selection(P.40)

EVT3 ON delay
time(P.35)

LED individual lit
mode(P.38)

Data clear Stop/Perform(*12)(P.40)

EVT3 OFF delay
time(P.35)Key input mode
(P.39)

EVT4 value

Output mode

78
9(P.36)
EVT4 ON delay
time(P.36)(P.39)
Input mode
(P.39)

Measured value(*11)(3 sec)

EVT4 OFF delay
time(P.36)
EVT5 value(P.36)
EVT5 ON delay
time(P.36)
EVT5 OFF delay
time(P.36)
EVT6 value(P.37)
EVT6 ON delay
time(P.37)
EVT6 OFF delay
time(P.37)
Sensor cap replacement timer remainder(P.37)
10(*11) Indicates DO concentration measured value.
(*12) Depending on the selection in [Data clear Stop/Perform], the unit operates as follows.
If ‘Data clear Stop’ is selected, data will not be cleared. The unit will revert to the mode prior to Data clear Stop (either Display Mode or
Cleansing Output Mode).
If ‘Data clear Perform’ is selected, data will be cleared. The unit will revert to the mode prior to Data clear Perform (either Display Modeor Cleansing Output Mode). (While data is being cleared, all indications are momentarily unlit.)11215. Maintenance15.1 Maintenance
Please perform the following maintenance procedure every month.
• Clean the measurement section with tap water.
• Check that the measurement section is not damaged or deteriorated.
• Check that DO Sensor cable is not damaged or deteriorated.
• Check that installation devices are not corroded.
15.2 Periodic Inspection
Please check the following items every 3 months.
• The DO meter (WIL-102-DO) is securely fixed in place.
• Check that the DO meter (WIL-102-DO) is not damaged.
• Check that screws in the terminal block are not rusty.
15.3 Replacement of Consumables (Maintenance Parts)
Purchase new sensor cap (DOS-CP), andreplace one (1) year after installation (Recommended).
15.4 Calibration
The DO meter (WIL-102-DO) is designed to be used for a long period of time, however,calibrate it at least once a year to maintain measurement reliability.
See Section “8. Calibration” (p.41).
15.5 Long-Term Storage
When the DO meter (WIL-102-DO) and DO Sensor are not used for a long period of time,
store them as follows.
• Disconnect the power from the mains electricity.
• Pull the DO Sensor out of the water, and clean it.
• Store the DO meter (WIL-102-DO) and DO Sensor away from direct sunlight.

113

16. Reference Chart
Amount of saturated DO in water at each temperature(At an atmospheric pressure 1, Salinity concentration 0 PSU)
Temperature( )Amount ofsaturated DO(mg/L)

Temperature( )Amount ofsaturated DO(mg/L)

Temperature( )Amount ofsaturated DO(mg/L)

Temperature( )Amount ofsaturated DO(mg/L)

1
2
3
4
5
6
7
8
9
10

14.22
13.83
13.46
13.11
12.77
12.45
12.14
11.84
11.56
11.29

11
12
13
14
15
16
17
18
19
20

11.03
10.78
10.54
10.31
10.08
9.87
9.67
9.47
9.28
9.09

21
22
23
24
25
26
27
28
29
30

8.92
8.74
8.58
8.42
8.26
8.11
7.97
7.83
7.69
7.56

31
32
33
34
35
36
37
38
39
40

7.43
7.31
7.18
7.07
6.95
6.84
6.73
6.62
6.52
6.41
JIS K 0102-2016

114

115

*****

Inquiries*****

For any inquiries about this unit, please contact our agency or thevendor where you purchased the unit after checking the following.
[Example]• Model--------------------------- WIL-102-DO• Serial number----------------- No. 194F05000

In addition to the above, please let us know the details of themalfunction, or discrepancy, and the operating conditions.

SHINKO TECHNOS CO., LTD.
OVERSEAS DIVISION
Head Office:2-5-1, Senbahigashi, Minoo, Osaka, 562-0035, Japan[URL][E-mail]

https://shinko-technos.co.jp/e/overseas@shinko-technos.co.jp

Tel: +81-72-727-6100
Fax: +81-72-727-7006

No. WIL11CDOE3

2022.02