Plug-in Type
Digital Indicating ORP Meter

WIL-101-ORP
Instruction ManualPreface
Thank you for purchasing our WIL-101-ORP, Plug-in Type Digital Indicating ORP Meter.
This manual contains instructions for the mounting, functions, operations and notes when operating theWIL-101-ORP. 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.

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”.
Depending on the circumstances, procedures indicated by
Caution may result in serious
consequences, so be sure to follow the directions for usage.

Warning

Procedures which may lead to dangerous conditions and cause death orserious 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 manufacture of
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 the unit.
• If the WIL-101-ORP 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 ofthis 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-101-ORP.
• 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 sensor which is connected to the input terminal nor
allow the power source to come into contact with the sensor.
• Use the ORP Combined Electrode Sensor in accordance with the sensor input specifications of theWIL-101-ORP.
• Keep the input wires and power lines separate.
Note about the ORP Combined Electrode Sensor Cable
The ORP Combined Electrode Sensor cable is a highly-insulated (electrical) cable. Please handle itwith utmost care as follows.
• Do not allow terminals and socket of the ORP Combined Electrode Sensor cable to come in contact
with moisture or oil of any kind. Likewise, ensure fingers are clean, otherwise the insulation will
deteriorate, resulting in unstable 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 electrode checking/replacement, the ORP Combined Electrode Sensor cableshould be wired with sufficient length.
• Keep the ORP Combined Electrode Sensor cable and junction cable away from electrical devices,such as motors or their power lines from which inductive interference emanates.
Connection
The ORP Combined Electrode Sensor cable has the following terminals.
Code
Terminal
M
Metal electrode terminal
R
Reference electrode terminal

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 How to Read the Model Label ................................................................................................................ 7
2. Names and Functions of Instrument ................................................................................................................ 8
3. Mounting to the Control Panel......................................................................................................................... 9
3.1 Site Selection.......................................................................................................................................... 9
3.2 External Dimensions (Scale: mm) ......................................................................................................... 9
3.3 Mounting ................................................................................................................................................. 9
4. Removal ..........................................................................................................................................................11
5. Wiring ............................................................................................................................................................. 12
5.1 Lead Wire Solderless Terminal ............................................................................................................. 13
5.2 Terminal Arrangement .......................................................................................................................... 13
5.3 Wire the Communication Line............................................................................................................... 14
6. Outline of Key Operation and Setting Groups ............................................................................................... 16
6.1 Outline of Key Operation ...................................................................................................................... 16
6.2 Setting Groups ...................................................................................................................................... 16
7. Key Operation Flowchart................................................................................................................................ 18
8.1 Turn the Power Supply to the WIL-101-ORP ON................................................................................. 20
8.2 ORP Input Function Group ................................................................................................................... 20
8.3 Output Function Group ......................................................................................................................... 21
8.4 Basic Function Group ........................................................................................................................... 27
9. Calibration ...................................................................................................................................................... 33
9.1 Adjustment Mode .................................................................................................................................. 33
9.2 Span Sensitivity Correction Mode ........................................................................................................ 34
9.3 Transmission Output Adjustment Mode ................................................................................................ 35
10. Measurement ............................................................................................................................................... 36
10.1 Starting Measurement ........................................................................................................................ 36
10.2 A
Output ....................................................................................................................................... 36
10.3 ORP Input Error Alarm ........................................................................................................................ 37
10.4 Cleansing Output ................................................................................................................................ 37
10.5 Manual Cleansing Mode ..................................................................................................................... 38
10.6 Transmission Output ........................................................................................................................... 39
10.7 ORP Fluctuation Alarm Output ........................................................................................................... 39
11. Communication............................................................................................................................................. 40
11.1 System Configuration Example........................................................................................................... 40
11.2 Setting Method of the ORP Meter ....................................................................................................... 40
11.3 Communication Procedure ................................................................................................................. 41
11.4 Shinko Protocol ................................................................................................................................... 42
11.4.1 Transmission Mode .................................................................................................................. 42
11.4.2 Command Configuration .......................................................................................................... 42
11.4.3 Checksum Calculation.............................................................................................................. 43
11.5 MODBUS Protocol .............................................................................................................................. 44
11.5.1 Transmission Mode .................................................................................................................. 44
11.5.2 Data Communication Interval ................................................................................................... 44
11.5.3 Message Configuration ............................................................................................................ 44
11.5.4 Message Example .................................................................................................................... 46
11.6 Communication Command Table ........................................................................................................ 48
11.6.1 Notes about Setting/Reading Command ................................................................................. 48
11.6.2 Setting/Reading Command ...................................................................................................... 48
11.6.3 Read Only Command ............................................................................................................... 53
5

11.7 ORP Calibration and Transmission Output Adjustment via Communication Command .................... 54
11.7.1 Adjustment Mode...................................................................................................................... 54
11.7.2 Span Sensitivity Correction Mode ............................................................................................ 54
11.7.3 Transmission Output Adjustment ............................................................................................. 55
11.8 Notes on Programming Monitoring Software ...................................................................................... 56
11.8.1 How to Speed up the Scan Time ............................................................................................. 56
11.8.2 How to Read the Set Value Changes Made by Front Keypad Operation ............................... 56
11.8.3 Note when Sending All Set Values Simultaneously................................................................. 56
12. Specifications ............................................................................................................................................... 57
12.1 Standard Specifications ...................................................................................................................... 57
12.2 Optional Specifications ....................................................................................................................... 60
13. Troubleshooting ............................................................................................................................................ 62
13.1 Indication ............................................................................................................................................. 62
13.2 Key Operation ..................................................................................................................................... 62
13.3 Communication ................................................................................................................................... 63
14. Character Tables .......................................................................................................................................... 64

61. Model
1.1 Model
WIL-101

Input Points

1

Input

-ORP

,
1 point

ORP

Power Supply Voltage
Option

ORP Combined Electrode Sensor
100 to 240 V AC (standard)
1

24 V AC/DC (*1)
output (A11, A12, A21, A22)

EVT

A

TA

Transmission output (*2)(*1) Power supply voltage 100 to 240 V AC is standard.
When ordering 24 V AC/DC, enter “1” in Power supply voltage after ‘ORP.
(*2) If the TA option is ordered, the EVT option (A1 output only) will be automatically added.
1.2 How to Read the Model Label
The model label is attached to the left side of the case.
Model, Option
Development No.
Input indication range
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 (CH1)

ORP Display (CH1㸧

Unit label (CH2)

Setting Display (CH2)

T/R indicator

A1 indicator

A2 indicator
UP keyMODE key

DOWN key

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

Displays
ORP Display (CH1)
Setting Display (CH2)

Unit labels
Unit label (CH1)
Unit label (CH2)

Action Indicators
PWR indicator
A1 indicator
A2 indicator
T/R indicator

ORP value or characters in setting mode are indicated in red.
Values in setting mode are indicated in red.
Indications differ depending on the selections in [Setting Display indication(p.28)].

Attach the user’s unit of ORP Display (CH1) from the included unit labels
if necessary.
Attach the user’s unit of Setting Display (CH2) from the included unit labels
if necessary.

When power supply to the instrument is turned ON, the yellow LED lights up.
When A1 output (Contact output 1) is ON, the red LED lights up.
When A2 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.
Decreases the numeric value.
Selects a setting group.
Switches the setting modes, and registers the set value.
Automatically measures and controls brightness of the ORP Display,
Setting 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 from “6. Outline of Key Operation and Setting Groups” to “8.
Setup (pages 16 to 32)” before performing “3. Mounting to the Control Panel (p.9)” and “5. Wiring (p.12)”.

8

3. Mounting to 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-101-ORP 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 ofelectronic parts (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-101-ORP into the socket, wire the unit while referring to Section “5. Wiring”(p.12).
(2) Check that the Lock Release has been lowered.

Lock Release(Fig. 3.3-2)(3) Insert the WIL-101-ORP into the socket.

When inserting, be careful about
the position of pins and slots.
(Fig. 3.3-3)(4) Fix the WIL-101-ORP and the socket by pushing the Lock Release up.
Check that the WIL-101-ORP and the socket
are locked by pushing the Lock Release up.

Lock Release(Fig. 3.3-4)
10

4. Removal(1) Turn the power supply to the unit OFF.
(2) Pull the Lock Release down, and release the WIL-101-ORP from the socket.
Check that the WIL-101-ORP and
the socket are unlocked by pulling
the Lock Release down.

Lock Release(Fig. 4-1)
(3) Separate the WIL-101-ORP from the socket.

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

Lock Release(Fig. 4-3)
11

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 sensor which is connected to the input terminal
nor allow the power source to come into contact with the sensor.
• Use the ORP Combined Electrode Sensor in accordance with the sensor input specifications of this unit.
• Keep the input wires and power lines separate.
Note about the ORP Combined Electrode Sensor Cable
The ORP Combined Electrode Sensor cable is a highly-insulated (electrical) cable. Please handle itwith utmost care as follows.
• Do not allow terminals and socket of the ORP Combined Electrode Sensor cable to come in contact
with moisture or oil of any kind. Likewise, ensure fingers are clean, otherwise the insulation will
deteriorate, resulting in unstable 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 electrode checking/replacement, the ORP Combined Electrode Sensor cable should
be wired with sufficient length.
• Keep the ORP Combined Electrode Sensor cable and junction cable away from electrical devices,such as motors or their power lines from which inductive interference emanates.
Connection
The ORP Combined Electrode Sensor cable has the following terminals.
Code
Terminal
M
Metal electrode terminal
R
Reference electrode terminal

12

5.1 Lead Wire Solderless Terminal
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.
Solderless
Terminal

Manufacturer
Nichifu Terminal Industries CO.,LTD.

5.9 mm or less
3.2 mmor moreY-typeModel

4 mm or less

TMEV1.25Y-3S

4.8 mmor more(Fig. 5.1-1)
5.2 Terminal Arrangement
Electrode sensor terminals ( 1 - 2 )ORP Combined Electrode Sensor
A1:
A1 output (Contact output 1) terminals( 9 - 10 )(When the EVT option or TA option isordered)A2:
A2 output (Contact output 2) terminals( 11 - 12 )(When the EVT option is ordered)
TRANSMIT OUTPUT:
Transmission output terminals ( 11 - 12 )(When the TA option is ordered)
POWER SUPPLY: Power terminals ( 13 - 14 )24 V AC/DC (Enter 1 after ‘ORP’.)
RS-485: Serial Communication modular jack
M, R:

Modular Jack Pin (WIL-101-ORP side arrangement)(Fig. 5.2-1)

13

5.3 Wire the Communication Line
Connect to the modular jack at the bottom of the instrument, using CDD (sold separately) or CPP (soldseparately).
• Wiring Example Using a USB Communication cable CMC-001-3 (sold-separately)
WIL-101-ORP (Max 31 units)

Host computer
USB port

CMC-001-3 (sold-separately)

CDD (sold-separately)or CPP (sold-separately)

Bottom of WIL-101-ORP(Fig. 5.3-1)• Wiring Example Using a Communication Converter IF-400 (sold-separately)
IF-400 (Sold Separately)
WIL-101-ORP (Max 31 units)
ShieldWire

FG

Host Computer
D-sub 9-pin Connector

CDD (sold-separately) or CPP (sold separately)

Bottom of IF-400, WIL-101-ORP(Fig. 5.3-2)
14

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 a personal computer withmultiple peripheral devices. The terminator prevents signal reflection and disturbance.
Do not connect a terminator with the communication line because each WIL-101-ORP has
built-in pull-up and pull-down resistors.
Communication converter IF-400 (sold separately) has a built-in terminal resistor.

15

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.
Press thekey in ORP Display Mode or Cleansing Output Mode. The unit enters Group Selection
Mode.
key, and press the
key. The unit enters each setting item.
Select a group with the
To set each setting item, use theorkey, and register the set value with thekey.
Abbreviations:
Sensi.: Sensitivity, Correct.: Correction,
Adjust.: Adjustment,
Trans.: Transmission

6.2 Setting Groups
Power ON+ORP Display Mode or(3 sec) (*2)(*2)

Manual Cleansing Mode

Cleansing Output Mode(*1)+

(3 sec) (*3)
Adjustment Mode+

(3 sec) (*3)
Span Sensi.Correct. Mode+

(3 sec)Transmission Output
Zero Adjust. Mode

Transmission Output

Span Adjust. ModeGroup Selection ModeSee pages 20-32 for details of each setting item.

ORP Input FunctionGroup

ORP inputs formoving averageA
output when
input errors occur

Output FunctionGroup

A11 type

A22 hysteresis

Basic FunctionGroup

Set value lockTrans. output value
HOLD when cleansing(*1) Measurement starts, indicating ORP on the ORP Display, and the item selected in [Setting Display indication (p.28)]
of Basic Function Group on the Setting Display. If power is turned ON again, the last mode (ORP Display Mode or
Cleansing Output Mode) from when power was turned OFF will resume.
(*2) If(Cleansing output) is selected in any of [A11, A12, A21, A22 type (pp.21, 22)] in the Output Function
Group, the unit will enter Manual Cleansing Mode.
After cleansing action is complete, the unit automatically reverts to Cleansing Output Mode.

16

(*3) The unit cannot enter Adjustment Mode or Span Sensitivity Correction Mode in the following cases:(Lock 1)㸪( Lock 2) or(Lock 3) is selected in [Set value lock (p.27)] in the Basic• WhenFunction Group.
• When(Cleansing output) is selected in any of [A11, A12, A21, A22 type (pp.21, 22)] in the Output Function
Group, and cleansing action is performing using the ‘Cleansing time’ and ‘Restore time after cleansing’ settings.

: Available only when the TA option is ordered.

About Key Operation+(3 sec): Press and hold the
key andkey (in that order) together for 3 seconds.
•
The unit will proceed to Manual Cleansing Mode.
+(3 sec): Press and hold the
key andkey (in that order) together for 3 seconds.
•
The unit will proceed to Adjustment Mode.
+(3 sec): Press and hold the
key andkey (in that order) together for 3 seconds.
•
The unit will proceed to Span Sensitivity Correction Mode.
+(3 sec): Press and hold the
key andkey (in that order) together for 3 seconds.
•
The unit will proceed to Transmission Output Zero Adjustment Mode.
or: Press theorkey. The unit will proceed to the next setting item,•
illustrated by an arrow.
•or: Press theor

key until the desired setting mode appears.

• To revert to ORP Display Mode or Cleansing Output Mode, press and hold theseconds while in any mode.

17

key for 3

7. Key Operation Flowchart

Abbreviation:
H/L: High/Low

POWER ONORP Display Mode or
Cleansing Output Mode
In ORP Display Mode or Cleansing
Output Mode, measurement starts,
indicating ORP value on the ORP
Display, and an item selected in [Setting
Display indication (p.28)] of Special
function group on the Setting Display.
If power is turned ON again, the lastmode (ORP Display Mode or Cleansing
Output Mode) from when power was
turned OFF will resume.

+(3sec) (*1)

Manual Cleansing Mode(P.38)+(3sec) (*2)

Adjustment Mode(P.33)+(3sec) (*2)

Span Sensitivity
Correction Mode (P.34)+(3sec)

Transmission Output
Zero Adjustment Mode
(P.35)ORP Input Function
Group

Output FunctionGroup

ORP inputs for moving(P.20)
average

A11 type

Input indication high(P.20)limit

A12 type

Input indication low
limit(P.20)

A21 type

ORP input filter time
constant(P.20)

A22 typeA
output type when
input errors occur (P.20)

A11 value

Transmission Output
Span Adjustment Mode
(P.35)

ձ
A22 ON side
(P.21)(*2)(P.23)A11 H/L limits independent
lower side value (P.25)(P.22)A22 OFF side(*2)

(P.23)A12 H/L limits independent
lower side value (P.25)(P.22)A11 ON delay time
(P.23)A21 H/L limits independent
lower side value (P.25)(P.22)A12 ON delay time
(P.24)A22 H/L limits independent
lower side value (P.25)(P.22)A21 ON delay time
(P.24)A11 H/L limits independent
upper side value (P.25)(P.22)A22 ON delay time
(P.24)A12 H/L limits independent
upper side value (P.25)(P.22)A11 OFF delay time
(P.24)A21 H/L limits independent
upper side value (P.26)(P.22)A12 OFF delay time
(P.24)A22 H/L limits independent
upper side value (P.26)

A11 hysteresis type(P.22)A21 OFF delay time
(P.24)

A11 hysteresis

A11 ON side

A22 OFF delay time
(P.24)

A12 hysteresis(P.22)A11 ORP fluctuation(P.24)
alarm time

A21 hysteresis(P.23)
A12 hysteresis type(P.23)A12 ORP fluctuation(P.24)
alarm time

A22 hysteresis

A12 ON side
(P.23)A21 ORP fluctuation
alarm time
(P.24)(P.23)A22 ORP fluctuation
alarm time
(P.25)

A21 hysteresis type(P.23)A11 ORP fluctuation(P.25)
alarm band

A21 ON side
(P.23)A12 ORP fluctuation(P.25)
alarm band

(P.23)A21 ORP fluctuation
alarm band
(P.25)

A22 hysteresis type(P.23)A22 ORP fluctuation(P.25)
alarm bandA12 value

A21 value

A22 value

A11 OFF side

A12 OFF side

A21 OFF side18

(P.26)(P.26)(P.26)(P.26)ղ‫ ە‬About Setting Items
ORP input for moving
average(P.20)• Upper left: ORP Display: Indicates the setting item characters.

Transmission output
high limit(P.28)

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

• Lower left: Setting Display: Indicates the factory default.

• Right side: Setting Display: Indicates the setting item.

If the TA option is ordered, A2 related items cannot be used.

(*1) If
(Cleansing output) is selected in any of [A11, A12, A21, A22type(pp.21, 22)] in the Output Function Group, the unit can enter Manual Cleansing Mode.
After cleansing action is complete, the unit automatically reverts to Cleansing Output Mode.
(*2) The unit cannot move to Adjustment Mode or Span Sensitivity Correction Mode.
• When(Lock 1),
(Lock 2) or(Lock 3) is selected in [Set value lock (p.26)] of Basic Function Group.
• When(Cleansing output) is selected in any of [A11, A12, A21, A22 type(pp.21, 22)] in theOutput Function Group,and cleansing action is performing using the ‘Cleansing time’ and Restore time after cleansing’ settings.

‫ ە‬About Key Operation•+(3 sec): Press and hold,keys (in that order) for 3 sec. The unit enters Manual Cleansing Mode.
•+(3 sec): Press and hold,keys (in that order) for 3 sec. The unit enters Adjustment Mode.
•+(3 sec): Press and hold,keys (in that order) for 3 sec. The unit enters Span Sensitivity Correction Mode.
•+(3 sec): Press and hold,keys (in that order) for 3 sec. The unit enters Transmission Output Zero Adjustment Mode.
•or: Press theorkey. The unit enters the next setting item, illustrated by an arrow.
• To revert to ORP Display Mode or Cleansing Output Mode, press and hold the
key for 3 seconds while in any mode.

ձBasic Function Group

Set value lock

Output ON time when
(P.30)
A2 output ON Cleansing time

(P.27)
Communication
protocol(P.27)

Output OFF time whenA2 output ON (P.30)

 Restore time after
cleansing(P.32)

Instrument number(P.27)A1 ORP input error
alarm Atype (P.30)

Transmission output
status when cleansing(P.32)

Communication(P.27)
speed

A2 ORP input error
type (P.30)
alarm A

Transmission output
value HOLD whencleansing(P.32)

Data bit / Parity(P.27)(P.32)

 A1 ORP input error
alarm band when A(P.30)
output ON

Stop bit(P.27)
Transmission output(P.28)
high limit
Transmission output(P.28)
low limit
Transmission output status
in Adjustment Mode / Span
Sensitivity Correction Mode A1 ORP input error
alarm time when A(P.30)
output ON A1 ORP input error
alarm band when A(P.30)
output OFF A1 ORP input error
alarm time when A
output OFF(P.31)(P.28)
Transmission output value
HOLD in Adjustment Mode
/ Span Sensitivity
Correction Mode

(P.28)

Auto-light function(P.28)
Setting Display
indication

 A2 ORP input error
alarm band when A
output ON(P.31)(P.28) A2 ORP input error
alarm time when A(P.31)
output ON A2 ORP input error
alarm band when A(P.31)
output OFF

Indication time
(P.28)
A1 output allocation(P.29)
A2 output allocation(P.29)
Output ON time whenA1 output ON(P.29)
Output OFF time whenA1 output ON (P.30)
ղ A2 ORP input error
alarm time when A(P.31)
output OFF
ORP input error alarm(P.31)
time unit
Number of cleansing
cycles
(P.31)
 Cleansing interval(P.31)

19

8. Setup
Setup should be done before using this instrument, according to the user’s conditions:
Setting the ORP input function (Input indication high limit, Input indication low limit), Output function(A11, A12, A21, A22 types), Basic function (Communication, Cleansing action, etc.).
Setup can be conducted in the ORP Input Function Group, Output Function Group and Basic Function
Group.
If the user’s specification is the same as the factory default of the WIL-101-ORP, or if setup has alreadybeen completed, it is not necessary to set up the instrument. Proceed to Section “9. Calibration (p.33)”.
8.1 Turn the Power Supply to the WIL-101-ORP ON.
is indicated on the ORP Display.
For approx. 4 seconds after the power is switched ON,
During this time, all outputs are in OFF status, and LED indicators except the PWR indicator turn off.
After that, measurement starts, indicating ORP on the ORP Display and an item selected in [Setting
Display indication (p.27)] on the Setting Display.
This status is called ORP Display Mode or Cleansing Output Mode.
8.2 ORP Input Function GroupTo enter the ORP Input Function Group, follow the procedure below.
1
Press thekey in ORP Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit proceeds to the ORP Input Function Group, and ’ORP inputs for moving average’ appears.
Character

Setting Item, Function, Setting Range
Factory Default
ORP inputs for moving average
20• Sets the number of ORP inputs used to obtain moving average.
• Setting range: 1 to 120
Input indication high limit
1999 mV• Sets the high limit value for ORP input indication.
• Setting range: Input indication low limit to 1999 mV
Input indication low limit-1999 mV
• Sets the low limit value for ORP input indication.
• Setting range: -1999 mV to Input indication high limit
ORP input filter time constant
0.0 seconds• Sets ORP input filter time constant.
If the value is set too large, it affects A
output due to the delay of response.
• Setting range: 0.0 to 60.0 seconds
output when input errors occur
DisabledA• If input errors, such as ORP Combined Electrode Sensor burnout or short-circuitedoccur, Aoutput Enabled/Disabled can be selected.
If “Enabled” is selected, A
output and A
output status will be maintained
when input errors occur.
If “Disabled” is selected, A
output and A
output status will be turned OFF
when input errors occur.
• Available when
(ORP input low limit) or(ORP input high limit) is
selected in [Atype].
• If(Cleansing output) is selected in [Atype], cleansing action takes
priority regardless of this selection.
•: Enabled: Disabled208.3 Output Function GroupTo enter the Output Function Group, follow the procedure below.
1
Press thekey twice in ORP Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit enters the Output Function Group, and ’A11 type‘ appears.
Character

Setting Item, Function, Setting Range
Factory Default
A11 type
No action• Selects an A11 type.
Note: If A11 type is changed, A11 value defaults to 0.
: No action•: ORP input low limit action (Fig. 8.3-1): ORP input high limit action (Fig. 8.3-1): Cleansing output: ORP fluctuation error alarm output [See Section “10.7 ORP fluctuation error
alarm output” (P.39)]: ORP input High/Low limits independent action (Fig. 8.3-2)• A11 Action (Activated based on the indication value.)
ORP input low limit action
ORP input high limit action
If Medium Value is selected in [A11hysteresis type]:

If Medium Value is selected in [A11hysteresis type]:
A11 ON sides

A11 ON sides
ON

ON

OFF

OFF

A11 value
If Reference Value is selected in [A11hysteresis type]:
A11 ON side*

A11 OFF side*

A11 value
If Reference Value is selected in [A11hysteresis type]:
A11 OFF side*
A11 ON side*
ON

ON

OFF

OFF
A11 valueA11 value(Fig. 8.3-1)* Setting Example:)] is set to 0, A11 output can be turned ON at theIf [A11 ON side ()].
value set in [A11 value ()] is set to 0, A11 output can be turned OFF at theIf [A11 OFF side (value set in [A11 value ()].
ORP input High/Low limits independent action
A11 hysteresis

A11 hysteresis

ONOFF
A11 High/Low limits
independent lower side value

A11 value

A11 High/Low limits
independent upper side value(Fig. 8.3-2)

21

Character

Setting Item, Function, Setting Range
Factory Default
A12 type
No action• Selects an A12 type.
Note: If A12 type is changed, A12 value defaults to 0.
• For the selection item and action, refer to A11 type (p.21).
A21 type
No action• Selects an A21 type.
Note: If A21 type is changed, A21 value defaults to 0.
• For the selection item and action, refer to A11 type (p.21).
A22 type
No action• Selects an A22 type.
Note: If A22 type is changed, A22 value defaults to 0.
• For the selection item and action, refer to A11 type (p.21).
A11 value
0 mV• Selects an A11 value. See (Fig. 8.3-1) (p.21).
(ORP input low limit),(ORP input high limit) or• Available when
(ORP input High/Low limits independent action) is selected in [A type].
• A11 is activated based on the indication value.
• Setting range: -1999 to 1999 mV
A12 value
0 mV• Selects an A12 value. See (Fig. 8.3-1) (p.21).
• For the indication condition, activation condition and setting range, refer to A11 value(p.22).
A21 value
0 mV• Selects an A21 value. See (Fig. 8.3-1) (p.21).
• For the indication condition, activation condition and setting range, refer to A11 value(p.22).
A22 value
0 mV• Selects an A22 value. See (Fig. 8.3-1) (p.21).
• For the indication condition, activation condition and setting range, refer to A11 value(p.22).
A11 hysteresis type
Reference Value• Selects A11 output hysteresis type (Medium Value or Reference Value).
See (Fig. 8.3-1) (p.21).
(ORP input low limit action) or(ORP input high limit• Available when
action) is selected in [A11 type].
•: Medium Value
Sets the same value for both ON and OFF sides in relation to A11 value.
Only ON side needs to be set.
: Reference Value
Sets individual values for ON and OFF sides in relation to A11 value.
Both ON and OFF sides need to be set individually.
A11 ON side
10 mV
• Sets the span of A11 ON side. See (Fig. 8.3-1) (p.21).
If(Medium Value) is selected in [A11 hysteresis type], the span of ON/OFFside will be the same value.
(ORP input low limit action) or(ORP input high limit• Available when
action) is selected in [A11 type].
• Setting range: 0 to 200 mV

22

Character

Setting Item, Function, Setting Range
Factory Default
A11 OFF side
10 mV
• Sets the span of A11 OFF side. See (Fig. 8.3-1) (p.21).
• Not available if(Medium Value) is selected in [A11 hysteresis type].
(ORP input low limit action) or(ORP input high limit
Available when
action) is selected in [A11 type].
• Setting range: 0 to 200 mV
A12 hysteresis type
Reference Value• Selects A12 output hysteresis type (Medium Value or Reference Value).
• For the indication condition and selection item, refer to A11 hysteresis type (p.22).
A12 ON side
10 mV
• Sets the span of A12 ON side.
(Medium Value) is selected in [A12 hysteresis type], the span of ON/OFF
Ifside will be the same value.
• For the indication condition and setting range, refer to A11 ON side (p.22).
A12 OFF side
10 mV
• Sets the span of A12 OFF side.
• For the indication condition and setting range, refer to A11 OFF side (p.23).
A21 hysteresis type
Reference Value• Selects A21 output hysteresis type (Medium Value or Reference Value).
• For the indication condition and selection item, refer to A11 hysteresis type (p.22).
A21 ON side
10 mV
• Sets the span of A21 ON side.
(Medium Value) is selected in [A21 hysteresis type], the span of ON/OFF
Ifside will be the same value.
• For the indication condition and setting range, refer to A11 ON side (p.22).
A21 OFF side
10 mVSets the span of A21 OFF side.
• For the indication condition and setting range, refer to A11 OFF side (p.23).
A22 hysteresis type
Reference Value• Selects A22 output hysteresis type (Medium Value or Reference Value).
• For the indication condition and selection item, refer to A11 hysteresis type (p.22).
A22 ON side
10 mV
• Sets the span of A22 ON side.
If(Medium Value) is selected in [A22 hysteresis type], the span of ON/OFFside will be the same value.
• For the indication condition and setting range, refer to A11 ON side (p.22).
A22 OFF side
10 mVSets the span of A22 OFF side.
• For the indication condition and setting range, refer to A11 OFF side (p.23).
A11 ON delay time
0 seconds• Sets A11 ON delay time.
The A11 output does not turn ON (under the conditions of turning ON) until the time
set in [A11 ON delay time] elapses.
(ORP input low limit action),(ORP input high limit• Available when
action) or(ORP input High/Low limits independent action) is selected in [A11type].
• Setting range: 0 to 9999 seconds

23

Character

Setting Item, Function, Setting Range
Factory Default
A12 ON delay time
0 seconds• Sets A12 ON delay time.
The A12 output does not turn ON (under the conditions of turning ON) until the time
set in [A12 ON delay time] elapses.
• For the indication condition and setting range, refer to A11 ON delay time (p.23).
A21 ON delay time
0 seconds• Sets A21 ON delay time.
The A21 output does not turn ON (under the conditions of turning ON) until the time
set in [A21 ON delay time] elapses.
• For the indication condition and setting range, refer to A11 ON delay time (p.23).
A22 ON delay time
0 seconds• Sets A22 ON delay time.
The A22 output does not turn ON (under the conditions of turning ON) until the time
set in [A22 ON delay time] elapses.
• For the indication condition and setting range, refer to A11 ON delay time (p.23).
A11 OFF delay time
0 seconds• Sets A11 OFF delay time.
The A11 output does not turn OFF (under the conditions of turning OFF) until the time
set in [A11 OFF delay time] elapses.
(ORP input low limit action),(ORP input high limit• Available when
(ORP input High/Low limits independent action) is selected in [A11action) ortype].
• Setting range: 0 to 9999 seconds
A12 OFF delay time
0 seconds• The A12 output does not turn OFF (under the conditions of turning OFF) until the time
set in [A12 OFF delay time] elapses.
• For the indication condition and setting range, refer to A11 OFF delay time (p.24).
A21 OFF delay time
0 seconds• The A21 output does not turn OFF (under the conditions of turning OFF) until the time
set in [A21 OFF delay time] elapses.
• For the indication condition and setting range, refer to A11 OFF delay time (p.24).
A22 OFF delay time
0 seconds• The A22 output does not turn OFF (under the conditions of turning OFF) until the time
set in [A22 OFF delay time] elapses.
• For the indication condition and setting range, refer to A11 OFF delay time (p.24).
A11 ORP fluctuation alarm time
0 hours• Sets time to assess A11 ORP fluctuation alarm.
Disabled when set to 0 (zero).
(ORP fluctuation alarm output) is selected in [A11 type].
• Available only when
• Setting range: 0 to 72 hours
A12 ORP fluctuation alarm time
0 hours• Sets time to assess A12 ORP fluctuation alarm.
• For the action, indication condition and setting range, refer to A11 ORP fluctuation
alarm time (p.24).
A21 ORP fluctuation alarm time
0 hours• Sets time to assess A21 ORP fluctuation alarm.
• For the action, indication condition and setting range, refer to A11 ORP fluctuation
alarm time (p.24).

24

Character

Setting Item, Function, Setting Range
Factory Default
A22 ORP fluctuation alarm time
0 hours• Sets time to assess A22 ORP fluctuation alarm.
• For the action, indication condition and setting range, refer to A11 ORP fluctuation
alarm time (p.24).
A11 ORP fluctuation alarm band
0 mV
• Sets the band to assess A11 ORP fluctuation alarm.
• Disabled when set to 0 mV.
(ORP fluctuation alarm output) is selected in [A11 type].
• Available only when
• Setting range: 0 to 3998 mV
A12 ORP fluctuation alarm band
0 mV
• Sets the band to assess A12 ORP fluctuation alarm.
• For the action, indication condition and setting range, refer to A11 ORP fluctuation
alarm band (p.25).
A21 ORP fluctuation alarm band
0 mV
• Sets the band to assess A21 ORP fluctuation alarm.
• For the action, indication condition and setting range, refer to A11 ORP fluctuation
alarm band (p.25).
A22 ORP fluctuation alarm band
0 mV
• Sets the band to assess A22 ORP fluctuation alarm.
• For the action, indication condition and setting range, refer to A11 ORP fluctuation
alarm band (p.25).
A11 High/Low limits independent lower side value
0 mV• Sets the lower side value of A11 High/Low limits independent action.(Fig. 8.3-2) (p.21)
Disabled when set to 0 mV.
(ORP input High/Low limits independent action) is• Available only whenselected in [A11 type].
• Setting range: 0 to 3998 mV
A12 High/Low limits independent lower side value
0 mV• Sets the lower side value of A12 High/Low limits independent action.
• For the action, indication condition and setting range, refer to A11 High/Low limits
independent lower side value (p.25).
A21 High/Low limits independent lower side value
0 mV• Sets the lower side value of A21 High/Low limits independent action.
• For the action, indication condition and setting range, refer to A11 High/Low limits
independent lower side value (p.25).
A22 High/Low limits independent lower side value
0 mV• Sets the lower side value of A22 High/Low limits independent action.
• For the action, indication condition and setting range, refer to A11 High/Low limits
independent lower side value (p.25).
A11 High/Low limits independent upper side value 0 mV
• Sets the upper side value of A11 High/Low limits independent action.(Fig. 8.3-2) (p.21)
Disabled when set to 0 mV.
(ORP input High/Low limits independent action) is• Available only whenselected in [A11 type].
• Setting range: 0 to 3998 mV
A12 High/Low limits independent upper side value 0 mV
• Sets the upper side value of A12 High/Low limits independent action.
• For the action, indication condition and setting range, refer to A11 High/Low limits
independent lower side value (p.25).

25

Character

Setting Item, Function, Setting Range
Factory Default
A21 High/Low limits independent upper side value 0 mV
• Sets the upper side value of A21 High/Low limits independent action.
• For the action, indication condition and setting range, refer to A11 High/Low limits
independent lower side value (p.25).
A22 High/Low limits independent upper side value 0 mV
• Sets the upper side value of A22 High/Low limits independent action.
• For the action, indication condition and setting range, refer to A11 High/Low limits
independent lower side value (p.25).
A11 hysteresis
10 mV• Sets the hysteresis of A11 High/Low limits independent action.
• Available only when
(ORP input High/Low limits independent action) is
selected in [A11 type].
• Setting range: 1 to 200 mV
A12 hysteresis
10 mV• Sets the hysteresis of A12 High/Low limits independent action.
• For the indication condition and setting range, refer to A11 hysteresis (p.26).
A21 hysteresis
10 mV• Sets the hysteresis of A21 High/Low limits independent action.
• For the indication condition and setting range, refer to A11 hysteresis (p.26).
A22 hysteresis
10 mV• Sets the hysteresis of A22 High/Low limits independent action.
• For the indication condition and setting range, refer to A11 hysteresis (p.26).

26

8.4 Basic Function GroupTo enter the Basic Function Group, follow the procedure below.
1
Press thekey 3 times in ORP Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit enters the Basic Function Group, and the ’Set value lock‘ appears.
Character

Setting Item, Function, Setting Range
Factory Default
Set value lock
Unlock• 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 A11, A12, A21, A22 values can be changed.
(Lock 3): All set values – except Adjustment value, Span sensitivity correction
value, Transmission output Zero adjustment value, Transmission
output Span adjustment value – 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 (A11, A12, A21, A22 types). If they arechanged, 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 communicationis the same as the value before the setting, the value will not be
written in the non-volatile IC memory.)
Communication protocol
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 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

27

Character

Setting Item, Function, Setting Range
Factory Default
Transmission output high limit
1999 mV• Sets the Transmission output high limit value.
(This value correponds to 20 mA DC output.)
If Transmission output high limit and low limit are set to the same value, thetransmission output will be fixed at 4 mA DC.
• Available only when Transmission output (TA option) is ordered.
• Setting range: Transmission output low limit to 1999 mV
Transmission output low limit-1999 mV
• Sets the Transmission output low limit value.
(This value correponds to 4 mA DC output.)
If Transmission output high limit and low limit are set to the same value, thetransmission output will be fixed at 4 mA DC.
• Available only when Transmission output (TA option) is ordered.
• Setting range: -1999 mV to Transmission output high limit
Transmission output status in Adjustment
Last value HOLD
Mode / Span Sensitivity Correction Mode
• Selects Transmission output status in Adjustment Mode or Span Sensitivity Correction
Mode.
• Available only when Transmission output (TA option) is ordered.
• Selection item
: Last value HOLD (Retains the last value before adjustment or span sensitivity
correction, and outputs it.): Set value HOLD (Outputs the value set in [Transmission output value HOLD
in Adjustment Mode / Span Sensitivity Correction Mode].): Measured value (Outputs the value measured in Adjustment Mode or Span
Sensitivity Correction Mode.)
Transmission output value HOLD in Adjust0 mVment Mode / Span Sensitivity Correction Mode
• Sets the transmission output value HOLD in Adjustment Mode or Span Sensitivity
Correction Mode.
(Set value HOLD) is selected in [Transmission output• Available only when
status in Adjustment Mode / Span Sensitivity Correction Mode].
• Setting range: -1999 to 1999 mV
Auto-light function
Disabled• Selects Auto-light Enabled/Disabled.
: Disabled•: Enabled
Setting Display indication
No indication• In ORP Display Mode or Cleansing Output Mode, selects an item to be indicated on the
Setting Display.
: No indication•: A11 value: A12 value: A21 value: A22 value
Indication time
00.00 (Remains lit)
• Sets the indication time of the displays after the last key operation until displays turn off
while in ORP 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.
(No indication) is selected in [Setting Display indication].
• Not available if• Setting range: 00.00 (Remains lit)
00.01 to 60.00 (Minutes.Seconds)
28

Character

Setting Item, Function, Setting Range
Factory Default
A1 output allocation
A11 type• Selects A1 output allocation.
For A1 output, A11 type, A12 type, A21 type and/or A22 type are allocated.
Output is OR output.
(Cleansing output) is selected in any of [A11, A12, A21, A22 type
However, if(pp.21, 22)], the Cleansing output will be given top priority.
• Selection item:: A11 type
: A12 type
: A21 type
: A22 type
: A11, A12 types: A21, A22 types: A11, A21 types: A12, A22 types: A11, A12, A21, A22 types
A2 output allocation
A21 type• Selects A2 output allocation.
For A2 output, A11 type, A12 type, A21 type and/or A22 type are allocated.
Output is OR output.
However, if(Cleansing output) is selected in any of [A11, A12, A21, A22 type(pp.21, 22)], the Cleansing output will be given top priority.
• Not available if Transmission output (TA option) is ordered.
• Selection items are the same as those of A1 output allocation (p.29).
Output ON time when A1 output ON
0 seconds• Sets Output ON time when A1 output is ON.
If ON time and OFF time are set, A1 output can be turned ON/OFF in a configured
cycle when A1 output is ON. (Fig. 8.4-1)• Setting range: 0 to 9999 seconds
Timing chart (Output ON time and OFF time when A1 output is ON)
ON
Actual A1 output
OFF
A1 output to which
ON time and OFF
time are set.

ON time is turned
OFF, caused by theactual A1 output
turning OFF.

ON
OFF
ON
time

29

OFF
time

ON
time

(Fig. 8.4-1)

OFF
time

ON
time

Character

Setting Item, Function, Setting Range
Factory Default
Output OFF time when A1 output ON
0 seconds• Sets Output OFF time when A1 output is ON.
If ON time and OFF time are set, A1 output can be turned ON/OFF in a configured
cycle when A1 output is ON. See (Fig. 8.4-1) (p.29).
• Setting range: 0 to 9999 seconds
Output ON time when A2 output ON
0 seconds• Sets Output ON time when A2 output is ON.
If ON time and OFF time are set, A2 output can be turned ON/OFF in a configured
cycle when A2 output is ON. See (Fig. 8.4-1) (p.29).
• Not available if Transmission output (TA option) is ordered.
• Setting range: 0 to 9999 seconds
Output OFF time when A2 output ON
0 seconds• Sets Output OFF time when A2 output is ON.
If ON time and OFF time are set, A2 output can be turned ON/OFF in a configured
cycle when A2 output is ON. See (Fig. 8.4-1) (p.29).
• Not available if Transmission output (TA option) is ordered.
• Setting range: 0 to 9999 seconds
A1 ORP input error alarm A
type
No action• Selects A
type in order to assess A1 ORP input error alarm.
: No action•: A11 type
: A12 type
: A21 type
: A22 type
type
No action
A2 ORP input error alarm A• Selects A
type in order to assess A2 ORP input error alarm.
• Not available if Transmission output (TA option) is ordered.
• Selection item: Same as A1 ORP input error alarm A
type (p.30)
A1 ORP input error alarm band
0 mV
output ON
when A• Sets band to assess A1 ORP input error alarm when A
output (selected in [A1 ORP
type]) is ON. Refer to ‘ORP Input Error Alarm’ (p.32).
input error alarm A• Setting range: 0 to 1999 mVWhen set to 0, ORP input error alarm is disabled.
0 seconds
A1 ORP input error alarm time
output ON
when A• Sets time to assess A1 ORP input error alarm when A
output (selected in [A1 ORP
type]) is ON. Refer to ‘ORP Input Error Alarm’ (p.32).
input error alarm A• Setting range: 0 to 9999 seconds or minutes (Time unit follows the selection in [ORP
input error alarm time unit].)
When set to 0, ORP input error alarm is disabled.
A1 ORP input error alarm band
0 mV
output OFF
when A• Sets band to assess A1 ORP input error alarm when A
output (selected in [A1 ORP
input error alarm A
type]) is OFF. Refer to ‘ORP Input Error Alarm’ (p.32).
• Setting range: 0 to 1999 mVWhen set to 0, ORP input error alarm is disabled.

30

Character

Setting Item, Function, Setting Range
Factory Default
A1 ORP input error alarm time
0 seconds
output OFF
when A• Sets time to assess A1 ORP input error alarm when A
output (selected in [A1 ORP
type]) is OFF. Refer to ‘ORP Input Error Alarm’ (p.32).
input error alarm A• Setting range: 0 to 9999 seconds or minutes (Time unit follows the selection in [ORP
input error alarm time unit].)
When set to 0, ORP input error alarm is disabled.
A2 ORP input error alarm band
0 mV
output ON
when A• Sets band to assess A2 ORP input error alarm when A
output (selected in [A2 ORP
type]) is ON. Refer to ‘ORP Input Error Alarm’ (p.32).
input error alarm A• Not available if Transmission output (TA option) is ordered.
• Setting range: 0 to 1999 mVWhen set to 0, ORP input error alarm is disabled.
0 seconds
A2 ORP input error alarm time
output ON
when A• Sets time to assess A2 ORP input error alarm when A
output (selected in [A2 ORP
type]) is ON. Refer to ‘ORP Input Error Alarm’ (p.32).
input error alarm A• Not available if Transmission output (TA option) is ordered.
• Setting range: 0 to 9999 seconds or minutes (Time unit follows the selection in [ORP
input error alarm time unit].)
When set to 0, ORP input error alarm is disabled.
A2 ORP input error alarm band
0 mV
when Aoutput OFF• Sets band to assess A2 ORP input error alarm when A
output (selected in [A2 ORP
input error alarm A
type]) is OFF. Refer to ‘ORP Input Error Alarm’ (p.32).
• Not available if Transmission output (TA option) is ordered.
• Setting range: 0 to 1999 mVWhen set to 0, ORP input error alarm is disabled.
0 seconds
A2 ORP input error alarm time
when Aoutput OFF• Sets time to assess A2 ORP input error alarm when A
output (selected in [A2 ORP
type]) is OFF. Refer to ‘ORP Input Error Alarm’ (p.32).
input error alarm A• Not available if Transmission output (TA option) is ordered.
• Setting range: 0 to 9999 seconds or minutes (Time unit follows the selection in [ORP
input error alarm time unit].)
When set to 0, ORP input error alarm is disabled.
ORP input error alarm time unit
Second(s)• Selects ORP input error alarm time unit.
• Selection item:: Second(s): Minute(s)Number of cleansing cycles
0 (Continuous cleansing)• Sets the number of cleansing outputs. (Fig. 8.4-2) (p.32)(Cleansing output) is selected in any of [A11, A12, A21, A22• Available whentype (pp. 21, 22)].
• Setting range: 0 to 10 (0: Continuous cleansing)
Cleansing interval
360 minutes• Sets an interval between cleansings. (Fig. 8.4-2) (p.32)• Available when
(Cleansing output) is selected in any of [A11, A12, A21, A22
type (pp. 21, 22)].
• Setting range: 60 to 3000 minutes

31

Character

Setting Item, Function, Setting Range
Factory Default
Cleansing time
600 seconds• Sets the cleansing output time during the cleansing output interval. (Fig. 8.4-2) (p.32)(Cleansing output) is selected in any of [A11, A12, A21, A22• Available whentype (pp. 21, 22)].
• Setting range: 1 to 1800 seconds
Restore time after cleansing
600 seconds• Sets the time to restore units to normal operation after cleansing output.(Fig. 8.4-2)(p.32)• Available when
(Cleansing output) is selected in any of [A11, A12, A21, A22
type (pp. 21, 22)].
• Setting range: 1 to 1800 seconds
Transmission output status when cleansing
Last value HOLD
• Selects Transmission output status when cleansing action is performing.
• Available when Transmission output (TA option) is ordered.
•: Last value HOLD (Retains the last value before cleansing, and outputs it.): Set value HOLD (Outputs the value set in [Transmission output value HOLD
when cleansing].): Measured value (Outputs the measured value when cleaning action is
performing.)
Transmission output value HOLD when cleansing 0 mV
• Sets the Transmission output value HOLD when cleansing.
• Available only when(Set value HOLD) is selected in [Transmission output
status when cleansing].
• Setting range: -1999 to 1999 mV• ORP Input Error Alarm
ORP input error alarm is used for detecting actuator trouble. Even if ORP input error alarm time has
elapsed, and if ORP input does not become higher than ORP input error alarm band, the unit assumes
that actuator trouble has occurred, and writes Status flag 2 (A1, A2 ORP input error alarm output flagbit). In Serial communication, status can be read by reading Status flag 2 (A1, A2 ORP input error
alarm output flag bit).
ORP input error alarm is disabled in the following cases.
• During Adjustment Mode, or Span Sensitivity Correction Mode.
(Cleansing output) is selected in any of [A11, A12, A21, A22 type (pp.21, 22)], and• Whencleansing action is performing using the ‘Cleansing time’ and ‘Restore time after cleansing’ settings.
• When ORP input error alarm time is set to 0 seconds, or ORP input error alarm band is set to 0 mV.
• Cleansing Output Action

Programmed
actionCleansing

Programmed
actionCno: Number of cleansing cycles
Cint: Cleansing interval
Ctm: Cleansing time
Rtm: Restore time after cleansing

Cleansing(Fig. 8.4-2)

32

Programmed
actionCleansing9. Calibration
Adjustment Mode, Span Sensitivity Correction Mode and Transmission Output Adjustment Mode aredescribed below.
9.1 Adjustment Mode
Only when using a brand-new sensor, please calibrate in Adjustment Mode.
By setting the adjustment value, calibrates ORP value indicated on the WIL-101-ORP to read 260 mV(at 20 ) when immersing the ORP Combined Electrode Sensor in the standard solution (Quinhydrone
potential difference 260 mV).
The unit cannot enter Adjustment Mode in the following cases:• When(Lock 1),
(Lock 2) or(Lock 3) is selected in [Set value lock (p.27)].
• When(Cleansing output) is selected in any of [A11, A12, A21, A22 type (pp.21, 22)], andcleansing action is performing using the ‘Cleansing time’ and ‘Restore time after cleansing’ settings.
The following outlines the procedure for calibration.
(1) When selecting(Last value HOLD) in [Transmission output status in Adjustment Mode /Span Sensitivity Correction Mode (p.28)], select it while the ORP Combined Electrode Sensor isbeing immersed in the solution currently calibrated.
(2) Press and hold theandkeys (in that order) together for 3 seconds in ORP Display Modeor Cleansing Output Mode.
The unit enters Adjustment Mode, and indicates the following.
Display
Indication
ORP Display
and ORP value are indicated alternately.
Setting Display
The adjustment value is indicated.
(3) Immerse the ORP Combined Electrode Sensor in the standard solution (Quinhydrone potential
difference 260 mV).
(4) Set an adjustment value with theor
key so that ORP value is approximately 260 mV (at 20 ).
For other temperature and electrical potentials, refer to the temperature characteristics of yourstandard solution.
Adjustment range: -200 to 200 mV(5) Press thekey.
Adjustment Mode is complete, and the unit reverts to ORP Display Mode or Cleansing Output
Mode.

33

9.2 Span Sensitivity Correction Mode
When calibrating periodically, please calibrate in Span Sensitivity Correction Mode.
By setting the Span sensitivity correction value in percentage, calibrates ORP value indicated on theWIL-101-ORP to read 260 mV (at 20 ) when immersing the ORP Combined Electrode Sensor in thestandard solution (Quinhydrone potential difference 260 mV).
The unit cannot enter Span Sensitivity Correction Mode in the following cases:• When(Lock 1),
(Lock 2) or(Lock 3) is selected in [Set value lock (p.27)]• When(Cleansing output) is selected in any of [A11, A12, A21, A22 type (pp.21, 22)], andcleansing action is performing using the ‘Cleansing time’ and ‘Restore time after cleansing’ settings.
The following outlines the procedure for calibration.
(1) When selecting(Last value HOLD) in [Transmission output status in Adjustment Mode /Span Sensitivity Correction Mode (p.28)], select it while the ORP Combined Electrode Sensor isbeing immersed in the solution currently calibrated.
(2) Press and hold theandkeys (in that order) together for 3 seconds in ORP Display Modeor Cleansing Output Mode.
The unit enters Span Sensitivity Correction Mode, and indicates the following.
Display
Indication
ORP Display
and ORP value are indicated alternately.
Setting Display
Span sensitivity correction value is indicated.
(3) Immerse the ORP Combined Electrode Sensor in the standard solution (Quinhydrone potential
difference 260 mV).
(4) Set a span sensitivity correction value with theor
key so that ORP value is approximately
260 mV (at 20 ). For other temperature and electrical potentials, refer to the temperature
characteristics of your standard solution.
Setting range: 50 to 150%
(5) Press thekey.
Span Sensitivity Correction Mode is complete, and the unit reverts to ORP Display Mode or
Cleansing Output Mode.

34

9.3 Transmission Output Adjustment Mode
Fine adjustment of Transmission output is performed.
This ORP meter is adjusted at the factory, however, differences may occur between the indication
value of the connected equipment (recorders, etc.) and output value of this unit.
In this case, perform Transmission output Zero adjustment and Span adjustment.
Transmission Output Adjustment Mode is available only when the Transmission output (TA option) is
ordered.
The unit cannot enter Transmission Output Adjustment Mode in the following cases.
• During Adjustment Mode or Span Sensitivity Correction Mode
• When(Lock 1),
(Lock 2) or(Lock 3) is selected in [Set value lock (p.27)]• When(Cleansing output) is selected in any of [A11, A12, A21, A22 type (pp.21, 22)], andcleansing action is performing using the ‘Cleansing time’ and ‘Restore time after cleansing’ settings.
The following outlines the procedure for Transmission output adjustment.
(1) Press and hold theandkey (in that order) together for approx. 3 seconds in ORP Display
Mode or Cleansing Output Mode.
The unit enters Transmission Output Zero Adjustment Mode, and indicates the following.
Display
Indication
ORP Display
Setting Display
Transmission output Zero adjustment value(2) Set Transmission output Zero adjustment value with theorvalue indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output spankeys, while viewing the(3) Press thekey.
The unit enters Transmission Output Span Adjustment Mode, and indicates the following.
Display
Indication
ORP Display
Setting Display
Transmission output Span adjustment value(4) Set Transmission output Span adjustment value with theorvalue indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output spankeys, while viewing the(5) Press thekey.
The unit reverts to the Transmission Output Zero Adjustment Mode.
Repeat steps (2) to (5) if necessary.
(6) To finish the Transmission output adjustment, press the
key in Transmission Output Span
Adjustment Mode.
The unit reverts to ORP Display Mode or Cleansing Output Mode.

35

10. Measurement
10.1 Starting Measurement
After mounting to the control panel, and wiring, setup and calibration are complete, turn the power tocharacters are
the instrument ON. For approx. 4 seconds after the power is switched ON,
indicated on the ORP Display.
During this time, all outputs are in OFF status, and LED indicators except the PWR indicator turn off.
After that, measurement starts, indicating ORP value on the ORP Display and the item selected in[Setting Display indication (p.28)] on the Setting Display.
This status is called ORP Display Mode or Cleansing Output Mode.
Output10.2 AWhen(ORP input low limit action),(ORP input high limit action) is selected in [A11,output is turned ON if ORP value exceeds the A
value.
A12, A21, A22 type (pp.21, 22)], the A
A1 or A2 output is turned ON depending on the settings in [A1/A2 output allocation (p.29)] and [Output
ON time/OFF time when A1/A2 output ON (pp.29, 30)].
(Cleansing output) is selected in any of [A11, A12, A21, A22 type (pp.21, 22)], theHowever, if
Cleansing output will be given top priority.
If ON time and OFF time are set, A1 or A2 output can be turned ON/OFF in a configured cycle whenA1 or A2 output is ON. (Fig. 10.2-1)
Timing chart (Output ON time and OFF time when A1 output is ON)
ON
Actual A1 output
OFF
ON time is turned
OFF, caused by theactual A1 output
turning OFF.

A1 output to which ON
ON time and OFF
time are set.
OFF
ON
time

ON
time

OFF
time

OFF
time

ON
time

(Fig. 10.2-1)
output status can be read by Status flag 2 (A11, A12, A21, A22 output flag bit) in SerialA
communication.
A
output status, when input errors occur, differs depending on the selection in [Aoutput when
input errors occur (p.20)].
• If(Disabled) is selected, A
output and A
output status will be turned OFF when input
errors occur.
• If(Enabled) is selected, A
output and A
output status will be maintained when
input errors occur.

36

10.3 ORP Input Error Alarm
ORP input error alarm is used for detecting actuator trouble.
Even if ORP input error alarm time has elapsed, and if ORP input does not become higher than ORP
input error alarm band, the unit assumes that actuator trouble has occurred, and sets Status flag 2(A1, A2 ORP input error alarm output flag bit).
In Serial communication, status can be read by reading Status flag 2 (A1, A2 ORP input error alarm
output flag bit).
ORP input error alarm is disabled in the following cases.
• During Adjustment Mode, Span Sensitivity Correction Mode.
(Cleansing output) is selected in any of [A11, A12, A21, A22 type (pp.21, 22)], and• Whencleansing action is performing using the ‘Cleansing time’ and ‘Restore time after cleansing’ settings.
• When ORP input error alarm time is set to 0 seconds, or ORP input error alarm band is set to 0 mV.
10.4 Cleansing Output(Cleansing output) is selected in any one of [A11, A12, A21, A22 type (pp.21, 22)], the unit
Ifwill enter Cleansing Output mode.
An A
output (for which the cleansing output is selected) will turn ON during the configured
cleansing time.
When the cleansing interval finishes after restore time has passed, this is counted as one cleansing
cycle, and the configured number of cleansing cycles will be repeated.
During cleansing output mode, the ORP value is constantly updated.
However, while cleansing is being performed using the ‘Cleansing Time’ and ‘Restore Time after
Cleansing’ settings, other contact outputs are in OFF status.
When cleansing is not being performed, programmed operation continues.
When power is turned ON again, the unit starts from the first cleansing cycle.
After the configured number of cleansing cycles are finished, the A
output (for which thecleansing output is selected) is turned OFF, and other outputs perform their programmed operations,however, they are in Cleansing Output mode.
• Cleansing Output Action

Programmed
actionCleansing Programmed
actionCleansing

Cno: Number of cleansing cycles
Cint: Cleansing interval
Ctm: Cleansing time
Rtm: Restore time after cleansing(Fig. 10.4-1)

37

Programmed
actionCleansingtype (to which Cleansing output
is• While A1 is performing cleansing action, and if Aset) is selected for A2, A2 cleansing action will be the same as the (currently performing) A1
cleansing action.
type (to which Cleansing output
isWhile A2 is performing cleansing action, and if Aset) is selected for A1, A1 cleansing action will be the same as the (currently performing) A2
cleansing action.
• During Adjustment Mode, Span Sensitivity Correction Mode or Transmission output adjustment, if
cleansing action initiates after restore time has passed, the cleansing action will not be performed in
the current session.
• If the number of cleansing cycles is changed in [Number of cleansing cycles] during cleansing
action, the new number will be valid from the next cleansing cycle.
If any output other than
(Cleansing output) is selected in [A11, A12, A21, A22 type (pp.21,22)], the unit will revert to ORP Display Mode.
10.5 Manual Cleansing Mode
By pressing theandkeys simultaneously for 3 seconds, the unit enters Manual Cleansing
Mode.
In Manual Cleansing Mode, cleansing action is performed using the ‘Cleansing Time’ and ‘Restore
Time after Cleansing’ settings.
After cleansing is completed, the unit automatically reverts to Cleansing Output Mode.
During cleansing action, manual cleansing via key operation is invalidated, so the unit cannot move to
Manual Cleansing Mode.
During Manual Cleansing Mode, if Programmed cleansing action initiates after Restore time has
passed, the programmed cleansing action will not be performed in the current session.
Cleansing action by Manual Cleansing Mode is counted as 1 cleansing cycle.
Manual Cleansing Mode Action

Key operation

Programmed
actionCleansing Programmed Cleansing Programmed
actionactionDuring cleansing action, Manual
Cleansing Mode via key operation
is invalidated – Programmed
cleansing mode takes priority.

Cleansing

During Manual Cleansing Mode, theProgrammed cleansing action will be
invalidated.
Cleansing action by Manual Cleansing
Mode is counted as one cleansing cycle.

Cno: Number of cleansing cycles
Cint: Cleansing interval
Ctm: Cleansing time
Rtm: Restore time after cleansing(Fig. 10.5-1)
38

10.6 Transmission Output
Converting ORP value to analog signal every input sampling period, outputs in current.
If Transmission output high limit and low limit are set to the same value, Transmission output will be
fixed at 4 mA DC.
Resolution
Current
Output accuracy

12000
4 to 20 mA DC (Load resistance: Max. 550 )Within 0.3% of Transmission output span

10.7 ORP Fluctuation Alarm Output
ORP fluctuation alarm output is used for detecting ORP input fluctuation error.
Even if ORP fluctuation alarm time has elapsed – if the change in ORP input fluctuation is smaller thanthe ORP fluctuation alarm band – the instrument assumes that an ORP fluctuation error has occurred,and sets Status flag 2 (A11, A12, A21, A22 output flag bit).
If(ORP fluctuation alarm output) is selected in [A11, A12, A21, A22 type (pp.21, 22)], theselected A
output will be turned ON.In Serial communication, status can be read by reading Status flag 2 (A11, A12, A21, A22 output flag
bit).
This function will be disabled if ORP fluctuation alarm time is set to 0 (zero) hours, or if ORP
fluctuation alarm band is set to 0 mV.

39

11. Communication
11.1 System Configuration Example• When Using USB Communication Cable CMC-001-3 (sold separately)

No.0

WIL-101-ORP
No.1 No.2

No.30

Host computer

USB communication cable
CMC-001-3 (Sold separately)(Fig. 11.1-1)• When Using Communication Converter IF-400 (sold separately)
Host computer

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

RS-232C

No. 1

WIL-101-ORP
No. 2

No. 30RS-485(Fig. 11.1-2)
11.2 Setting Method of the ORP Meter
Communication parameters can be set in the Basic Function Group.
To enter the Basic Function Group, follow the procedure below.
1
Press thekey 3 times in ORP Display Mode or Cleansing Output Mode.
2
Press thekey twice. ’Communication Protocol‘ appears.
3 Set each item. (Use theor
key for settings, and register the value with the
key.)Character

Setting Item, Function, Setting Range
Factory Default
Communication protocol
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
40

Character

4

Press theMode.

Setting Item, Function, Setting Range
Factory Default
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
key multiple times. The unit reverts to ORP Display Mode or Cleansing Output

11.3 Communication Procedure
Communication starts with command transmission from the host computer (hereafter Master) andends with the response of the WIL-101-ORP (hereafter Slave).
• Response with Data
MasterSlave
When the master sends the reading command, the slave
Command
responds with the corresponding set value or current status.
Data• Acknowledgement
When the master sends the setting command, the slave responds
Commandby sending acknowledgement after processing is terminated.
Acknowledgement• Negative Acknowledgement
When the master sends a non-existent command or value out of
Commandthe setting range, the slave returns a negative acknowledgement.
• No Response
Negative Acknowledgement
The slave will not respond to the master in the following cases:•
Global address (Shinko protocol) is set.
Command• Broadcast address (MODBUS protocol) is set.
• Communication error (framing error, parity error)
No response• Checksum error (Shinko protocol), LRC discrepancy (MODBUS(Fig.11.3-1)
ASCII 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 within a
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 tosend the command again. (It is recommended to execute Retry twice or more.)
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.
4111.4 Shinko Protocol

11.4.1 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
11.4.2 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
Command
Data
Header
Data
Checksumaddress
Addresstype (50H)
item
(02H)
(20H)
1
1
1
1
4
4
2
(Fig. 11.4.2-1)

Delimiter(03H)
1(2) Reading Command
Sub
Commandaddresstype (20H)
(20H)
1
1
(Fig. 11.4.2-2)

Header(02H)

Address

Data
item

Checksum

Delimiter
(03H)

1

1

4

2

1

(3) Response with Data
Sub
Commandaddresstype (20H)
(20H)
1
1
(Fig. 11.4.2-3)

Header(06H)

Address

Data
item

Data

Checksum

Delimiter
(03H)

1

1

4

4

2

1

(4) Acknowledgement
HeaderAddress Checksum
(06H)
1
1
2
(Fig. 11.4.2-4)

Delimiter(03H)1(5) Negative Acknowledgement
Header
Error
Delimiter
Address
Checksum
(15H)
code
(03H)
1
1
1
2
1
(Fig. 11.4.2-5)
Header: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 numbers 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 commandis sent to all the slaves connected. However, the response is not returned.
Sub Address:
20H fixed
42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 “11.6. Communication Command Table”. (pp. 48 to 53)]
Data:
The contents of data (set value) differ depending on the setting command.
Composed of 4-digit hexadecimal numbers, using ASCII.
[Refer to “11.6. Communication Command Table”. (pp. 48 to 53)]
Checksum:
2-character data to detect communication errors.
Refer to “11.4.3 Checksum Calculation”.
Delimiter:Control code to represent the end of command.
ASCII code ETX (03H) fixed.
Error Code:
Represents an error type using ASCII.
1 (31H)-----Non-existent command
2 (32H)-----Not used
3 (33H)-----Setting outside the setting range
4 (34H)-----Status unable to be set (e.g. During Adjustment Mode, Span Sensitivity
Correction Mode or Transmission output adjustment, etc.)
5 (35H)-----During setting mode by keypad operation

11.4.3 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 0008H (ORP inputs for moving average): 1 (0001H)
Address (instrument number): 0 (20H)
Checksum calculation range[e.g.]
P

STX

0

0

0

8

0

0

0

1

30H

30H

30H

31H

E

7

ETX

[Characters above are represented in ASCII.]
02H

20H

20H

50H

30H

30H

[Hexadecimal][Binary]
20H0010 0000
20H
0010 0000
50H
0101 0000
30H
0011 0000
30H
0011 0000
30H
0011 0000
38H
0011 1000
30H
0011 0000
30H
0011 0000
30H
0011 0000
0011 0001+ 31H
10 0001 1001

30H

38H

45H 37H

Checksum[1's complement]+[2's complement]

1110 0110
11110 0111[Hexadecimal]

E[ASCII]45H 37H(Fig. 11.4.3-1)
43

7

Checksum03H11.5 MODBUS Protocol

11.5.1 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)11.5.2 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-101-ORP
assumes that transmission from the master is finished, which results in a communication error, andwill not return a response.

11.5.3 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)].
HeaderSlave
FunctionError check
Delimiter Delimiter
Data(:)
address
Code
LRC
(CR)
(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 formore 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 address
code

44

(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.
The slave informs the master which slave is responding to the master by placing its own addressin 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 the following action types.
(Table 11.5.3-1)
Function CodeContents
03 (03H)
Reading the set value and information from slaves
06 (06H)
Setting to slaves
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 to the 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 for the
response.
(For example, when 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 (Table 11.5.3-2) 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 11.5.3-2)
Exception Code1 (01H)
2 (02H)
3 (03H)
17 (11H)
18 (12H)

Contents
Illegal function (Non-existent function)
Illegal data address (Non-existent data address)
Illegal data value (Value out of the setting range)
Shinko protocol error code 4 [Status unable to be set (e.g.) During
Adjustment Mode, Span Sensitivity Correction Mode or Transmission
output adjustment, etc.]
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 data item, amount of data and setting data.
A response message from the slave is composed of a byte count, data and exception codesin negative acknowledgements, corresponding to the request message.
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.

45

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 orderto high 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 and thefixed 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.

11.5.4 Message Example
ASCII Mode
Numerals written below the command represent the number of characters.
1 Reading [Slave address 1, Data item 0080H (ORP value)]• 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
(3AH)
1

Slave
Address(30H 31H)
2

Function
Code(30H 33H)
2

Data Item
Amount of Data
Error Check[0080H][0001H]
LRC(30H 30H 38H 30H) (30H 30H 30H 31H) (37H 42H)
4
4
2

Delimiter(0DH 0AH)
2• Response message from the slave in normal status [100 mV (0064H)]
The response byte count means the byte count of the data which has been read.
It is fixed as (30H 32H).
Header(3AH)

Slave
Address(30H 31H)

Function
Code(30H 33H)

1

2

2

Response
Byte Count[02H](30H 32H)
2

Data
Error Check[0064H]
LRC(30H 30H 36H 34H) (39H 36H)
4
2

Delimiter(0DH 0AH)
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).
The exception code 02H (Non-existent data address) is returned (error).
Header
(3AH)
1
2

Slave
Address(30H 31H)
2

Function
Code(38H 33H)
2

Exception Code
[02H]
(30H 32H)
2

Error Check
LRC(37H 41H)
2

Delimiter(0DH 0AH)
2

Setting [Slave address 1, Data item 0008H (ORP inputs for moving average)]• A request message from the master [when setting ‘ORP inputs for moving average’ to 1 (0001H)]
Header
(3AH)
1

Slave
Address(30H 31H)
2

Function
Code(30H 36H)
2

Data Item
Amount of data
Error Check[0008H][0001H]
LRC(30H 30H 30H 38H) (30H 30H 30H 31H) (46H 30H)
4
4
2Delimiter(0DH 0AH)
2• Response message from the slave in normal status
Header
(3AH)
1

Slave
Address(30H 31H)
2

Function
Code(30H 36H)
2

Data Item
Amount of data
Error Check[0008H][0001H]
LRC(30H 30H 30H 38H) (30H 30H 30H 31H) (46H 30H)
4
4
2

46

Delimiter(0DH 0AH)
2• 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).
The exception code 03H (Value out of the setting range) is returned (error).
Header
(3AH)
1

Slave
Address(30H 31H)
2

Function
Code(38H 36H)
2

Exception Code
[03H]
(30H 33H)
2

Error Check
LRC(37H 36H)
2

Delimiter(0DH 0AH)
2

RTU Mode
Numerals written below the command represent the number of characters.
1 Reading [Slave address 1, Data item 0080H (ORP value)]• A request message from the masterAmount of data means how many data items are to be read. It is fixed as (0001H).
Slave
3.5 idle
Address
Characters(01H)
1

Function
Code
(03H)
1

Data Item Amount of
data(0080H)(0001H)
2
2

Error Check
CRC-16(85E2H)2

3.5 idle
characters• Response message from the slave in normal status [100 mV (0064H)]
The response byte count means the byte count of the data which has been read.
It is fixed as (02H).
Slave
3.5 idle
Address
Characters(01H)
1

Function
Code
(03H)

Response
Byte Count
(02H)

Data
(0064H)

Error Check
CRC-16(B9AFH)

1

1

2

2

3.5 idle
characters• Response message from the slave in exception (error) status (When data item is incorrect).
The function code MSB is set to 1 for the response message in exception (error) status (83H).
The exception code (02H: Non-existent data address) is returned (error).
Slave
3.5 idle
Address
Characters
(01H)
1
2

Function
Code
(83H)
1

Exception Code
(02H)
1

Error Check
CRC-16(C0F1H)2

3.5 idle
characters

Setting [Slave address 1, Data item 0008H (ORP inputs for moving average)]• A request message from the master [when setting ‘ORP inputs for moving average’ to 1 (0001H)]
Slave
3.5 idle
Address
Characters(01H)
1

Function
Code
(06H)

Data Item

Data(0008H)(0001H)

Error Check
CRC-16(C9C8H)

1

2

2

2

3.5 idle
characters• Response message from the slave in normal status
Slave
3.5 idle
Address
Characters(01H)
1

Function
Code
(06H)

Data Item

Data(0008H)(0001H)

Error Check
CRC-16(C9C8H)

1

2

2

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).
The exception code (03H: Value out of the setting range) is returned (error).
Slave
3.5 idle
Address
Characters(01H)
1

Function
Code
(86H)
1

Exception
Code
(03H)
1

47

Error Check
CRC-16(0261H)2

3.5 idle
characters11.6 Communication Command Table
11.6.1 Notes about Setting/Reading Command• The data (set value, decimal) is converted to hexadecimal numbers.
A negative number is represented in 2's complement.
• When connecting multiple slaves, the address (instrument number) must not be duplicated.
• Data item 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 as follows. 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 (Input indication high limit) as an example:
Data item in the sending message is 0001H, however, MODBUS protocol Holding Register
address is 40002 (1 + 40001).
• Even if options are not ordered, setting or reading via software communication will be possible.
Command contents of the A11, A12, A21, A22 will function, however, Transmission output
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, ensure the set values
are not frequently changed via software communication. (If a value set via softwarecommunication is the same 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 Lock 3 is selected, all set values – except Adjustment value, Span sensitivity correction value,
Transmission output Zero and Span adjustment 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 A11, A12, A21 and A22 types. If they are changed, they will affectother 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 A11, A12, A21 or A22 type is changed at Data items 0003H (A11 type), 0050H (A12 type), 0051H(A21 type) or 0052H (A22 type), the A11, A12, A21 or A22 value will default to 0 (zero).
The output status of A11, A12, A21 or A22 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. (pp.40, 41)• 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.
11.6.2 Setting/Reading Command
ShinkoMODBUS
Command Function
Data ItemType
Code
50H/20H
06H/03H 0001H Input indication high limit
50H/20H
06H/03H 0002H Input indication low limit
50H/20H
06H/03H 0003H A11 type

48

Data
Set value
Set value
0000H: No action
0001H: ORP input low limit action
0002H: ORP input high limit action
0003H: Cleansing output
0004H: ORP fluctuation alarm output
0005H: ORP input High/Low limits
independent action

Shinko
MODBUS
Command Function
Type
Code
50H/20H
06H/03H 0004H
50H/20H
06H/03H 0005H
50H/20H
06H/03H 0006H
50H/20H
06H/03H 0007H
50H/20H
06H/03H 0008H
50H/20H
06H/03H 0030H

50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H

0032H
0033H
0035H

50H/20H

06H/03H

0036H

50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H

0037H
0040H
0041H

50H

06H

0044H

50H/20H
50H

06H/03H
06H

0045H
0046H

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H

0047H
0048H
0049H
004AH
004BH
0050H

50H/20H

06H/03H

0051H

50H/20H

06H/03H

0052H

Data Item
A11 value
A11 ON side
A11 ON delay time
A11 OFF delay time
ORP inputs for moving average
Set value lockData

Set value
Set value
Set value
Set value
Set value
0000H: Unlock
0001H: Lock 1
0002H: Lock 2
0003H: Lock 3
Transmission output high limit
Set value
Transmission output low limit
Set value
Auto-light function
0000H: Disabled
0001H: Enabled
0000H: No indication
Setting Display indication
0001H: A11 value
0002H: A12 value
0003H: A21 value
0004H: A22 value
Indication time
Set value
ORP input filter time constantSet valueA
output when input
0000H: Enabled
errors occur
0001H: Disabled
Adjustment Mode
0000H: ORP Display Modeor Cleansing Output Mode
0001H: Adjustment Mode
Adjustment value
Set value
000H: ORP Display Mode
Span Sensitivity Correction
or Cleansing Output Mode
Mode
0001H: Span Sensitivity
Correction ModeSet value
Span sensitivity correction value
Output ON time when A1 output ON
Set value
Output OFF time when A1 output ON Set value
Output ON time when A2 output ON
Set value
Output OFF time when A2 output ON Set value
0000H: No action
A12 type
0001H: ORP input low limit action
0002H: ORP input high limit action
0003H: Cleansing output
0004H: ORP fluctuation alarm output
0005H: ORP input High/Low limits
independent action
0000H: No action
A21 type
0001H: ORP input low limit action
0002H: ORP input high limit action
0003H: Cleansing output
0004H: ORP fluctuation alarm output
0005H: ORP input High/Low limits
independent action
0000H: No action
A22 type
0001H: ORP input low limit action
0002H: ORP input high limit action
0003H: Cleansing output
0004H: ORP fluctuation alarm output
0005H: ORP input High/Low limits
independent action
49

ShinkoCommandType
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

MODBUS
FunctionCode
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H

0053H
0054H
0055H
0056H
0057H
0058H
0059H
005AH
005BH
005CH
005DH
005EH
006AH

50H/20H

06H/03H

006BH A2 output allocation

50H

06H

007FH

50H/20H

06H/03H

0100H

Key operation change flagclearing
A11 hysteresis type

50H/20H

06H/03H

0101H

A12 hysteresis type

50H/20H

06H/03H

0102H

A21 hysteresis type

50H/20H

06H/03H

0103H

A22 hysteresis type

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H

06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H

0104H
0105H
0106H
0107H
0108H
0109H
010AH
010BH
010CH

A11 OFF side
A12 OFF side
A21 OFF side
A22 OFF side
Number of cleansing cycles
Cleansing interval
Cleansing time
Restore time after cleansing
Manual Cleansing Mode

Data Item

Data

A12 value
A21 value
A22 value
A12 ON side
A21 ON side
A22 ON side
A12 ON delay time
A21 ON delay time
A22 ON delay time
A12 OFF delay time
A21 OFF delay time
A22 OFF delay time
A1 output allocation

Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
0000H: A11 type
0001H: A12 type
0002H: A21 type
0003H: A22 type
0004H: A11, A12 types
0005H: A21, A22 types
0006H: A11, A21 types
0007H: A12, A22 types
0008H: A11, A12, A21, A22 types
0000H: A11 type
0001H: A12 type
0002H: A21 type
0003H: A22 type
0004H: A11, A12 types
0005H: A21, A22 types
0006H: A11, A21 types
0007H: A12, A22 types
0008H: A11, A12, A21, A22 types
0001H: Clear change flag

500000H: Medium Value
0001H: Reference Value
0000H: Medium Value
0001H: Reference Value
0000H: Medium Value
0001H: Reference Value
0000H: Medium Value
0001H: Reference Value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
0001H: Manual Cleansing Mode

ShinkoCommandType
50H/20H

MODBUS
FunctionCode
06H/03H

010FH

50H/20H

06H/03H

0110H

50H/20H

06H/03H

0111H

Transmission output status inin Adjustment Mode / Span Sensitivity
Correction Mode
Transmission output value HOLD in
Adjustment Mode / Span Sensitivity
Correction Mode
A1 ORP input error alarm A
type

50H/20H

06H/03H

0112H

A2 ORP input error alarm A

50H/20H

06H/03H

0115H

50H/20H

06H/03H

0116H

50H/20H

06H/03H

0117H

50H/20H

06H/03H

0118H

50H/20H

06H/03H

0119H

50H/20H

06H/03H

011AH

50H/20H

06H/03H

011BH

50H/20H

06H/03H

011CH

50H/20H

06H/03H

0125H

A1 ORP input error alarm band
when Aoutput ON
A1 ORP input error alarm time
output ON
when A
A1 ORP input error alarm band
when Aoutput OFF
A1 ORP input error alarm time
when Aoutput OFF
A2 ORP input error alarm band
when Aoutput ON
A2 ORP input error alarm time
when Aoutput ON
A2 ORP input error alarm band
when Aoutput OFF
A2 ORP input error alarm time
when Aoutput OFF
ORP input error alarm time unit

50H

06H

0126H

Transmission Output
Adjustment Mode

50H/20H

06H/03H

0127H

50H/20H

06H/03H

0128H

50H/20H
50H/20H

06H/03H
06H/03H

0131H
0132H

Transmission output Zeroadjustment value
Transmission output Spanadjustment value
A11 ORP fluctuation alarm time
A12 ORP fluctuation alarm time

Data Item

51

Data

type

0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value
Set value

0000H: No action
0001H: A11 type
0002H: A12 type
0003H: A21 type
0004H: A22 type
0000H: No action
0001H: A11 type
0002H: A12 type
0003H: A21 type
0004H: A22 typeSet value
Set value
Set value
Set value
Set value
Set value
Set value
Set value

0000H: Second(s)0001H: Minute(s)0000H: ORP Display Mode or
Cleansing Output Mode
0001H: Transmission Output Zero
Adjustment Mode
0002H: Transmission Output Span
Adjustment ModeSet value
Set value
Set value
Set valueShinkoCommandType
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

MODBUS
FunctionCode
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H

0133H
0134H
0135H
0136H
0137H
0138H
0139H

50H/20H

06H/03H

013AH

50H/20H

06H/03H

013BH

50H/20H

06H/03H

013CH

50H/20H

06H/03H

013DH

50H/20H

06H/03H

013EH

50H/20H

06H/03H

013FH

50H/20H

06H/03H

0140H

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H
06H/03H
06H/03H

0141H
0142H
0143H
0144H
0145H

50H/20H

06H/03H

0146H

50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H
50H/20H

06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H
06H/03H

0200H
0201H
0202H
0203H
0204H
0205H
0206H
0207H
0208H
0209H

Data Item
A21 ORP fluctuation alarm time
A22 ORP fluctuation alarm time
A11 ORP fluctuation alarm band
A12 ORP fluctuation alarm band
A21 ORP fluctuation alarm band
A22 ORP fluctuation alarm band
A11 High/Low limits independent
lower side value
A12 High/Low limits independent
lower side value
A21 High/Low limits independent
lower side value
A22 High/Low limits independent
lower side value
A11 High/Low limits independent
upper side value
A12 High/Low limits independent
upper side value
A21 High/Low limits independent
upper side value
A22 High/Low limits independent
upper side value
A11 hysteresis
A12 hysteresis
A21 hysteresis
A22 hysteresis
Transmission output statuswhen cleansing

Data
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
Set value
0000H: Last value HOLD
0001H: Set value HOLD
0002H: Measured value
Set value

Transmission output value HOLD
when cleansing
User save area 1-32768 to 32767 (8000H to 7FFFH)
User save area 2-32768 to 32767 (8000H to 7FFFH)
User save area 3-32768 to 32767 (8000H to 7FFFH)
User save area 4-32768 to 32767 (8000H to 7FFFH)
User save area 5-32768 to 32767 (8000H to 7FFFH)
User save area 6-32768 to 32767 (8000H to 7FFFH)
User save area 7-32768 to 32767 (8000H to 7FFFH)
User save area 8-32768 to 32767 (8000H to 7FFFH)
User save area 9-32768 to 32767 (8000H to 7FFFH)
User save area 10-32768 to 32767 (8000H to 7FFFH)

52

11.6.3 Read Only Command
ShinkoMODBUS
Command Function
Data Item
Data
Type
Code
20H
03H
0080H ORP value
ORP value
20H
03H
0081H Status flag 10000 0000 0000 0000
to
20
215
0
8
2 to 2 digit: Not used (Always 0)
29 digit: ORP value has exceeded 1999 mV
0: Normal
1: Exceeding 1999 mV
210 digit: ORP value is less than -1999 mV
0: Normal
1: Less than -1999 mV
211 digit: Unit status flag
0: ORP Display Mode or Cleansing Output Mode
1: Setting mode
212 digit: Adjustment status flag
0: ORP Display Mode or Cleansing Output Mode
1: Adjustment Mode
213 digit: Span sensitivity correction status flag
0: ORP Display Mode or Cleansing Output Mode
1: Span Sensitivity Correction Mode
214 digit: A1 output
0: OFF
1: ON
215 digit: Change in key operation
0: No
1: Yes20H
03H
0091H Status flag 20000 0000 0000 0000
215
to
20
0 digit: Cleansing output
0: OFF
1:ON
2
21 digit: A2 output
0: OFF
1:ON
22 digit: Not used (Always 0)
0: OFF
1: ON
23 digit: A11 output flag (*)
24 digit: A12 output flag (*)
0: OFF
1: ON
25 digit: A21 output flag (*)
0: OFF
1: ON
0: OFF
1: ON
26 digit: A22 output flag (*)
27 digit: Cleansing action (Cleansing time)
0: During programmed action 1: During cleansing time
28 digit: Cleansing action (Restore time after cleansing)
0: During programmed action
1: During Restore time after cleansing
29 digit: Manual cleansing action status flag
0: No Manual cleansing action
1: During Manual cleansing action
210 digit: Not used (Always 0)
211 , 212 digits: Transmission output adjustment status flag
212
211
Status00
ORP Display Mode or Cleansing Output Mode01
During transmission output Zero adjustment inTransmission Output Adjustment Mode
10
During transmission output Span adjustment inTransmission Output Adjustment Mode
213 digit: A1 ORP input error alarm output flag
214 digit: A2 ORP input error alarm output flag
215 digit: Not used (Always 0)(*) When(Cleansing output) is selected in [A11, A12, A21, A22 type]: The A
changes to 1 (ON).
If any item other than
(Cleansing output) is selected:
When Aoutput is ON: The A
output flag changes to 1 (ON).
output is OFF: The A
output flag changes to 0 (OFF).
When A53

0: OFF 1: ON
0: OFF 1: ON
output flag

11.7 ORP Calibration and Transmission Output Adjustment via Communication Command
Like a keypad operation, there are also 2 methods in calibration via communication command:
Adjustment Mode, Span Sensitivity Correction Mode

11.7.1 Adjustment Mode
Only when using a brand-new sensor, please calibrate in Adjustment Mode.
By setting the adjustment value, calibrates ORP value indicated on the WIL-101-ORP to read
260 mV (at 20 ) when immersing the ORP Combined Electrode Sensor in the standard solution(Quinhydrone potential difference 260 mV).
The following outlines the procedure for calibration.
1

When selecting Last value HOLD (0000H) at Data item 010FH (Transmission output status in
Adjustment Mode / Span Sensitivity Correction Mode), select it while the ORP Combined
Electrode Sensor is being immersed in the solution currently calibrated.

2

Set Data item 0044H (Adjustment Mode) to 0001H. The unit enters Adjustment Mode.

3

Immerse the ORP Combined Electrode Sensor in the standard solution (Quinhydrone potential
difference 260 mV).

4

Set the adjustment value at Data item 0045H (Adjustment value) so that ORP value is 260 mV(at 20 ).
For other temperature and electrical potentials, refer to the temperature characteristics of yourstandard solution.
If 212 digit is read at Data item 0081H (Status flag 1), 1 (Adjustment Mode) will be returned.

5

Set Data item 0044H (Adjustment Mode) to 0000H.
Adjustment Mode is complete, and the unit will revert to ORP Display Mode or Cleansing Output
Mode.
If 212 digit is read at Data item 0081H (Status flag 1), 0 (ORP Display Mode or Cleansing Output
Mode) will be returned.

If errors (e.g. ORP value is outside the measurement range) occur in Adjustment Mode, and if
adjustment cannot be carried out, Error code 1 (Exceeding 1999 mV, Less than -1999 mV) will be
returned when 29 or 210 digit is read at Data item 0081H (Status flag 1).
To cancel the error code, set Data item 0044H (Adjustment Mode) to 0000H.
The unit will revert to ORP Display Mode or Cleansing Output Mode.

11.7.2 Span Sensitivity Correction Mode
When calibrating periodically, please calibrate in Span Sensitivity Correction Mode.
By setting the Span sensitivity correction value in percentage, calibrates ORP value indicated on
the WIL-101-ORP to read 260 mV (at 20 ) when immersing the ORP Combined ElectrodeSensor in the standard solution (Quinhydrone potential difference 260 mV).
The following outlines the procedure for calibration.
1

When selecting Last value HOLD (0000H) at Data item 010FH (Transmission output status in
Adjustment Mode / Span Sensitivity Correction Mode), select it while the ORP Combined
Electrode Sensor is being immersed in the solution currently calibrated.

2

Set Data item 0046H (Span Sensitivity Correction Mode) to 0001H. The unit enters Span
Sensitivity Correction Mode.

3

Immerse the ORP Combined Electrode Sensor in the Standard solution (Quinhydrone potential
difference 260 mV).
54

4

Set the span sensitivity correction value at Data item 0047H (Span sensitivity correction
value) so that ORP value is 260 mV (at 20 ).
For other temperature and electrical potentials, refer to the temperature characteristics of yourstandard solution.
If 213 digit is read at Data item 0081H (Status flag 1), 1 (Span Sensitivity Correction Mode) will be
returned.

5

Set Data item 0046H (Span Sensitivity Correction Mode) to 0000H.
Span Sensitivity Correction Mode is complete, and the unit will revert to ORP Display Mode or
Cleansing Output Mode.
If 213 digit is read at Data item 0081H (Status flag 1), 0 (ORP Display Mode or Cleansing Output
Mode) will be returned.

If errors (e.g. ORP value is outside the measurement range) occur in Span Sensitivity Correction
Mode, and if span sensitivity correction cannot be carried out, Error code 1 (Exceeding 1999 mV,Less than -1999 mV) will be returned when 29 or 210 digit is read at Data item 0081H (Status flag 1).
To cancel the error code, set Data item 0046H (Span Sensitivity Correction Mode) to 0000H.
The unit will revert to ORP Display Mode or Cleansing Output Mode.

11.7.3 Transmission Output Adjustment
Fine adjustment of Transmission output is performed.
This ORP meter 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 Zero adjustment and Span adjustment.
The following outlines the procedure for Transmission output adjustment.
1

Set Data item 0126H (Transmission Output Adjustment Mode) to 0001H.
The unit moves to Transmission Output Zero Adjustment Mode.
If 212, 211 digits are read at Data item 0091H (Status flag 2), 01 (During transmission output Zeroadjustment in Transmission Output Adjustment Mode) will be returned.

2

Set the Transmission output Zero adjustment value at Data item 0127H (Transmission output
Zero adjustment value), while viewing the value displayed on the connected equipment(recorders, etc.).
Setting range: 5.00% of Transmission output span3

Set Data item 0126H (Transmission Output Adjustment Mode) to 0002H.
The unit moves to Transmission Output Span Adjustment Mode.
If 212, 211 digits are read at Data item 0091H (Status flag 2), 10 (During transmission output Spanadjustment in Transmission Output Adjustment Mode) will be returned.

4

Set the Transmission output Span adjustment value at Data item 0128H (Transmission output
Span adjustment value), while viewing the value displayed on the connected equipment(recorders, etc.).
Setting range: 5.00% of Transmission output span

5

Repeat steps

6

To finish the Transmission output adjustment, set Data item 0126H (Transmission Output
Adjustment Mode) to 0000H.
The unit reverts to ORP Display Mode or Cleansing Output Mode.

1

to

4

if necessary.

55

11.8 Notes on Programming Monitoring Software

11.8.1 How to Speed up the Scan Time
When monitoring multiple units of the WIL-101-ORP, set the program so that the requisite
minimum pieces of data such as Data item 0080H (ORP value), Data item 0081H (Status flag 1),
Data item 0091H (Status flag 2) can be read. For other data, set the program so that they canbe read only when their set value has been changed. This will speed up the scan time.
11.8.2 How to Read the Set Value Changes Made by Front Keypad Operation
If any set value is changed by keypad operation, the instrument sets [0081H (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 [0081H (Status flag 1) 215: Change in key
operation] has been set to 1 (Yes), then read all set values.
2

Clear [0081H (Status flag 1) 215: Change in key operation], by setting Data item 007FH(Key operation change flag clearing) to 0001H (Clear change flag).
If Data item 007FH (Key operation change flag clearing) is set to 0001H (Clear change flag)
during the setting mode of the instrument, Error code 5 (35H, Shinko protocol) or Exception
Code 18 (12H, MODBUS protocol) will be returned as a negative acknowledgement. And[0081H (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 isreturned.

3

Read all set values again after acknowledgement is returned.

(2) Reading Method 2
1 On the monitoring software side, check that [0081H (Status flag 1) 215: Change in key
operation] has been set to 1 (Yes), then set Data item 007FH (Key operation change flagclearing) to 0001H (Clear change flag).
2

Set the program depending on the acknowledgement or negative acknowledgement asfollows.
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 (ORP value), 0081H (Status flag 1), 0091H (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 arecomplete.

11.8.3 Note when Sending All Set Values Simultaneously• If A11, A12, A21 or A22 type is changed at Data item 0003H (A11 type), 0050H (A12 type), 0051H(A21 type) or 0052H (A22 type), the A11, A12, A21 or A22 value will default to 0 (zero).
Output status of A11, A12, A21 or A22 will also be initialized.
First, send the A11, A12, A21, A22 type, then send the A11, A12, A21, A22 value set at Data item
0004H (A11 value), 0053H (A12 value), 0054H (A21 value) and 0055H (A22 value).

5612. Specifications
12.1 Standard Specifications
RatingRated scale
Input
Power supply voltage

General Structure
External dimensions
Mounting
Case
Panel
Indication structure

Input
Input Range
Resolution
ORP Combined Electrode Sensor -1999 to 1999 mV
1 mV
ORP Combined Electrode Sensor
Model
WIL-101-ORP
WIL-101-ORP 1
Power supply voltage 100 to 240 V AC 50/60 Hz 24 V AC/DC 50/60 Hz
Allowable voltage
85 to 264 V AC
20 to 28 V AC/DC
fluctuation range

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
Red LED 4-digits,character size 10 x 4.6 mm (H x W)
ORP Display
Red LED 4-digits,character size 10 x 4.6 mm (H x W)
Setting Display
Action indicator
PWR (Yellow)
A1 (Red)A2 (Yellow)

Setting structure
Indication Performance
Repeatability
Linearity
Input sampling period
Time accuracyStandard Functions
Adjustment

Span Sensitivity
Correction

Lights up when power supply is ON.
Lights up when A1 output (Contact output 1) is ON.
Lights up when A2 output (Contact output 2) is ON.
(Turns OFF if the TA option is ordered.)T/R (Yellow)
Lights up while in Serial communication TX output(transmitting).
Setting method: Input system using membrane sheet key

Within 5 mV (at equivalent input)
Within 5 mV (at equivalent input)
125 msWithin 1% of setting time

For successful measurement of ORP, ORP value in the sensor location,
electrode performance and standard solution accuracy respectively play animportant role for obtaining reliable data.
By setting the adjustment value, calibrates ORP value displayed on theWIL-101-ORP to read 260 mV (at 20 ) when immersing the ORP
Combined Electrode Sensor in the standard solution (Quinhydrone
potential difference 260 mV).
By setting the span sensitivity correction value in percentage, calibrates
ORP value displayed on the WIL-101-ORP to read 260 mV (at 20 ) when
immersing the ORP Combined Electrode Sensor in the standard solution(Quinhydrone potential difference 260 mV).

57

Serial communication

Cable length
Communication line
Communication
methodCommunication
speed
Synchronization
methodCode form
Communication
protocolData bit/Parity
Stop bit
Error correction
Error detection
Data format

The following operations can be carried out from an external computer.
(1) Reading and setting of various set values(2) Reading of the ORP value and status(3) Function change, adjustment(4) Reading and setting of user save area
1.2 km (Max.), Cable resistance: Within 50(Terminators are notminimum on both sides.)necessary, but if used, use 120
EIA RS-485
Half-duplex communication
9600, 19200, 38400 bps (Selectable by keypad)
Start-stop synchronization
ASCII, binary
Shinko protocol, MODBUS ASCII, MODBUS RTU (Selectable by keypad)
8-bits/No parity, 7-bits/No parity, 8-bits/Even, 7-bits/Even, 8-bits/Odd,
7-bits/Odd (Selectable by keypad)
1 bit, 2 bits (Selectable by keypad)
Command request repeat system
Parity check, Checksum (Shinko protocol), LRC (MODBUS protocol ASCII),
CRC-16 (MODBUS protocol RTU)
Communication
ShinkoMODBUS ASCIIMODBUS RTU
ProtocolProtocolStart bit
Data bit

1
7

ParityEven

Stop bit

Insulation/Dielectric Strength
Circuit Insulation
Configuration

1

1
7 (8) Selectable
Even (No parity,
Odd)
Selectable
1 (2)Selectable1
8
No parity (Even,
Odd)
Selectable
1 (2)Selectable

Power supply

A1 output

Input

Electricallyinsulated

A2 output orTransmission
outputSerialcommunication

Dielectric strength㻌: When thecorresponding
option is ordered.
id dInsulation resistance: 10 M minimum, at 500 V DC
Between power terminal - ground:
1.5 kV AC for 1 minuteBetween input terminal - ground:
1.5 kV AC for 1 minuteBetween input terminal - power terminal: 1.5 kV AC for 1 minute㻌58Attached Functions
Set value lock

Outside measurement
range

Power failurecountermeasureSelf-diagnosis
Warm-up Indication
Display sleep function

Auto-light function

Other
Power consumption㻌
Ambient temperature㻌
Ambient humidity㻌 㻌
Weight㻌 㻌
Accessories included㻌 㻌
Accessories soldseparately
Environmental
specification

Lock 1: None of the set values can be changed.
Lock 2: Only A11, A12, A21, A22 values can be changed.
Lock 3: All set values – except Adjustment value, Span sensitivity correction
value, Transmission output Zero and Span adjustment values – canbe 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.
ORP value is outside the measurement range: If the value is less than-1999 mV or exceeds 1999 mV, the following will be indicated.
ORP Display
Setting Display
Less than -1999 mV: -1999
is flashing.
Exceeding 1999 mV: 1999
is flashing.
However, when ORP value is outside the measurement range, and if theunit proceeds to Adjustment Mode or Span Sensitivity Correction Mode, the
ORP Display will be unlit, and the Setting Display will flash.
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-101-ORP is switched to warm-up status.
For approx. 4 seconds after the power is switched ON,
is indicatedon the ORP Display.
In ORP Display Mode or Cleansing Output Mode, selects the item to be
indicated on the Setting Display.
No indication, A11, A12, A21 or A22 value can be selected in [Setting
Display indication (p.28)].
If any item other than ’No indication’ is selected, and if indication time isset, the display (no operation status) becomes unlit after the indication time
has passed.
By pressing any key, the display re-lights.
If the indication time is set to 00.00, the display remains lit, and thisfunction does not work.
Automatically measures and controls brightness of the ORP Display,
Setting Display and action indicators.

Approx. 8 VA㻌
0 to 50 (32 to 122 )㻌
35 to 85 %RH (non-condensing)㻌
Approx. 200 g (including the socket)㻌
Instruction manual: 1 copy㻌Unit label: 1 sheet
Socket ASK-001-1 (Terminal screw fall prevention, finger-safe structure)㻌
RoHS directive compliant㻌5912.2 Optional Specifications
Output (Option Code: EVT or TA)A
outputIf ORP value exceeds the A
value, the A
output will be turned ONA
for each A
output type.
output status can be read via
Regardless of options being ordered, A
Status flag 2 (A11, A12, A21, A22 output flag bit) in Serial communication.

Setting range
ActionA
ON sideOFF sideAA
type

output status, when input errors occur, differs depending on theAoutput when input errors occur (p.20)] as follows:
selections in [A(Disabled) is selected, the A
output and A
output• Ifstatus will be turned OFF if input errors occur.
(Enabled) is selected, the A
output and A
output• Ifstatus will be maintained if input errors occur.
-1999 to 1999 mV
ON/OFF action
0 to 200 mV

One type can be selected from the following with the keypad.
• No action• ORP input low limit action• ORP input high limit action• Cleansing output• ORP fluctuation alarm output• ORP input High/Low limits independent action
OutputRelay contact, 1a
Control capacity
3 A 250 V AC (Resistive load)
1 A 250 V AC (Inductive load cos =0.4)
Electrical life
100,000 cycles
A
ON delay time 0 to 9999 seconds
A
OFF delay time 0 to 9999 seconds
A1, A2 output
For A1 or A2 output, A11 type, A12 type, A21 type and/or A22 type areallocation
allocated.
Output is OR output.
However, if(Cleansing output) is selected in any of [A11, A12,
A21, A22 type (pp.21, 22)], the cleansing output will be given top priority.
Output ON time/
If Output ON time and OFF time are set, A1 or A2 output can be turned
OFF time when
ON/OFF in a configured cycle when A1 or A2 output is ON.
A1/A2 output ON
ORP input error
Detects actuator trouble.
alarm
Even if ORP input error alarm time has elapsed, and if ORP input does not
become higher than ORP input error alarm band, the unit assumes that
actuator trouble has occurred, and sets Status flag 2 (A1, A2 ORP input
error alarm output flag bit).
In Serial communication, status can be read by reading Status flag 2 (A1,A2 ORP input error alarm output flag bit).
ORP input error alarm is disabled in the following cases.
• During Adjustment Mode or Span Sensitivity Correction Mode
(Cleansing output) is selected in any of [A11, A12, A21,
• When
A22 type (pp.21, 22)], and cleansing action is performing using the‘Cleansing time’ and ‘Restore time after cleansing’ settings.
• When ORP input error alarm time is set to 0 seconds, or ORP input
error alarm band is set to 0 mV.

60

Transmission Output (Option Code: TA)
Converting ORP value to analog signal every input sampling period, andTransmission output
outputs the value in current.
If Transmission output high limit and low limit are set to the same value,
the transmission output will be fixed at 4 mA DC.
Resolution
12000
Current
4 to 20 mA DC (Load resistance: Max. 550 )Output accuracy
Within 0.3% of Transmission output span
Transmission output Fine adjustment of Transmission output is performed via Transmission
adjustment
output Zero adjustment and Span adjustment.
Transmission output Transmission output status can be selected in Adjustment Mode or Spanstatus in Adjustment Sensitivity Correction Mode.
Mode / Span
Last value HOLD: Retains the last value before Adjustment or Span
Sensitivity
Sensitivity Correction, and outputs it.
Correction ModeSet value HOLD: Outputs the value set in [Transmission output value
HOLD in Adjustment Mode / Span Sensitivity
Correction Mode].
Measured value: Outputs the measured value in Adjustment Mode or Span
Sensitivity Correction Mode.

61

13. Troubleshooting
If any malfunction occurs, refer to the following items after checking that power is being supplied to theWIL-101-ORP.
13.1 Indication
Problem
The ORP Display is unlit.

The ORP Display is dark.
Indication of the ORP
Display is unstable orirregular.

Setting Display is unlit.

[] is flashing on the
Setting Display.

[] is indicating on
the ORP Display.
13.2 Key Operation
ProblemNone of the set values canbe changed.
The values do not changeby theorkey.
Only Avalue can be
set. Other settings are
impossible.
The values do not change
by
or
key.

Possible Cause
The time set in [Indication time
(p.28)] has passed.

(Enabled) is selected in[Auto-light function (p.28)].
Calibration may not have finished.
Specification of ORP Combined
Electrode Sensor may not besuitable.
Electrode sensor terminal screws
have become loose.
Electrical insulation of electrodesensor terminals has deteriorated.
The electrode is not clean.
Air bubbles are attached to theelectrode.
The electrode has not beenplaced in the measurement
solution.
There may be equipment thatinterferes with or makes noise
near the WIL-101-ORP.
(No indication) is selected
in [Setting Display indication(p.28)].
This indicates that the ORP value
is outside the measurement range(less than -1999 mV or exceeding
1999 mV).
Internal memory is defective.

Possible Cause(Lock 1) is selected in[Set value lock (p.27)].

(Lock 2) is selected in[Set value lock (p.27)].

62

Solution
If any key is pressed whiledisplays are unlit, it will re-light.
Set the indication time to a suitable
time-frame.
Select(Disabled).
Perform calibration.
Replace the sensor with asuitable one.
Tighten the screws securely.
Clean the terminals with alcohol,and dry completely.
Clean the electrode.
Make sure there are no bubbles
in the measurement solution.
Install the electrode in themeasurement solution,
maintaining a consistent volume.
Keep WIL-101-ORP clear of any
potentially disruptive equipment.
Select any other item except(No indication).
Select A11, A12, A21 or A22 value.
Check the measuring
environment.

Contact our agency or us.

SelectSolution(Unlock).

Select(Unlock).

ProblemUnable to enter Manual
Cleansing Mode.

Unable to enter calibration
mode (Adjustment Mode orSpan Sensitivity CorrectionMode).

Possible Cause(Cleansing output) is notselected in any of [A11, A12, A21
or A22 type (pp.21, 22)].
Cleansing action is performing
using the ‘Cleansing time’ and‘Restore time after cleansing’
settings.
(Lock 1),
(Lock 2)
(Lock 3) has beenor
selected in [Set value lock (p.27)].
(Cleansing output) has
been selected in any of [A11, A12,
A21, A22 type (pp.21, 22)], andcleansing action is performing
using the ‘Cleansing Time’ and‘Restore Time after Cleansing’
settings.

Solution
Select(Cleansing output)
in any of [A11, A12, A21 or A22
type (pp.21, 22)].
Execute Manual cleansing after
Cleansing action is completed.

Select(Unlock).

Perform calibration after
cleansing action is complete.

13.3 Communication
Check that power is being supplied to the master and slave that customers use.
If communication failure still occurs, check the following.
ProblemPossible Cause
Solution
Communication failure
Communication cable is not
Check the communication cablesecurely connected, or isand connector.
disconnected/defective.
Incorrect wiring of the communiCheck the communication cablecation cable and/or connector
and connector.
Imperfect contact between the
Check the communication cablecommunication cable and theand connector.
connector, or between thecommunication connector andinstrument port
Communication speed of the slave
Check the communication
does not match that of the master.
speed of the slave and master.
The data bit, parity and stop bit ofCheck the data bit, parity andthe master do not correspond tostop bit of the master and thethose of the slave.
slave.
The instrument number (address)
Check the instrument numberof the slave does not correspond(address) of the slave andto that of the command.
command.
The instrument numbers
Check the instrument numbers(addresses) are duplicated in(addresses) of the slave.
multiple slaves.
Make sure that the program is
Check the program.
appropriate for the transmission
timing.
Although communication is
A non-existent command code
Check the command code.
occurring, the response ishas been sent.
negative acknowledgement. The setting command data exceeds Check the setting range of thethe setting range of the slave.
slave.
The WIL-101-ORP cannot be set
Check the slave status.
while in Adjustment Mode or Span
Sensitivity Correction Mode.
The WIL-101-ORP is in the front
Return the unit to ORP Display
keypad operation setting mode.
Mode or Cleansing Output Mode.
63

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

Setting GroupORP Input Function GroupOutput Function Group
Basic Function Group

Adjustment Mode
Character
Setting Item, Setting Range
Adjustment value(*)-200 to 200 mV(*)
and ORP value are displayed alternately.

0 mV

Span Sensitivity Correction Mode
Character
Setting Item, Setting Range
Span sensitivity correction value(*)
Setting range: 50 to 150%(*)
and ORP value are displayed alternately.

100%

Factory Default

Data

Factory Default

DataTransmission Output Adjustment Mode
Character
Setting Item, Setting Range
Factory Default
Transmission output Zero
0.00%
adjustment value
Setting range: 5.00% of Transmission output span
Transmission output Span
0.00%
adjustment value
Setting range: 5.00% of Transmission output span
ORP Input Function Group
Character
Setting Item, Setting Range
Factory Default
ORP inputs for moving average
20
Setting range: 1 to 120
Input indication high limit
1999 mV
Setting range: Input indication low limit to 1999 mV
Input indication low limit-1999 mV
Setting range: -1999 mV to Input indication high limit
ORP input filter time constant
0.0 seconds
Setting range: 0.0 to 60.0 seconds
A

output when input errors occur: Enabled: Disabled64

Disabled

Data

Data

Output Function Group
Character
Setting Item, Setting Range
Factory Default
A11 type
No action: No action: ORP input low limit action: ORP input high limit action: Cleansing output: ORP fluctuation alarm output: ORP input High/Low limits independent action
A12 type
No action
Selection item: Same as those of A11 type
A21 type
No action
Selection item: Same as those of A11 type
A22 type
No action
Selection item: Same as those of A11 typeA11 value
Setting range: -1999 to 1999 mV

0 mV

A12 value
Setting range: -1999 to 1999 mV
A21 value
Setting range: -1999 to 1999 mV
A22 value
Setting range: -1999 to 1999 mV
A11 hysteresis type
: Medium Value: Reference Value
A11 ON side
Setting range: 0 to 200 mV
A11 OFF side
Setting range: 0 to 200 mV
A12 hysteresis type
: Medium Value: Reference Value
A12 ON side
Setting range: 0 to 200 mV
A12 OFF side
Setting range: 0 to 200 mV
A21 hysteresis type
: Medium Value: Reference Value
A21 ON side
Setting range: 0 to 200 mV
A21 OFF side
Setting range: 0 to 200 mV
A22 hysteresis type
: Medium Value: Reference ValueA22 ON side
Setting range: 0 to 200 mV
A22 OFF side
Setting range: 0 to 200 mV

0 mV

65

0 mV
0 mV
Reference Value

10 mV
10 mV
Reference Value

10 mV
10 mV
Reference Value

10 mV
10 mV
Reference Value

10 mV
10 mV

Data

Character

Setting Item, Setting Range
A11 ON delay time
Setting range: 0 to 9999 seconds
A12 ON delay time
Setting range: 0 to 9999 seconds
A21 ON delay time
Setting range: 0 to 9999 seconds
A22 ON delay time
Setting range: 0 to 9999 seconds
A11 OFF delay time
Setting range: 0 to 9999 seconds
A12 OFF delay time
Setting range: 0 to 9999 seconds
A21 OFF delay time
Setting range: 0 to 9999 seconds
A22 OFF delay time
Setting range: 0 to 9999 seconds
A11 ORP fluctuation alarm time
Setting range: 0 to 72 hours
A12 ORP fluctuation alarm time
Setting range: 0 to 72 hours
A21 ORP fluctuation alarm time
Setting range: 0 to 72 hours
A22 ORP fluctuation alarm time
Setting range: 0 to 72 hours
A11 ORP fluctuation alarm band
Setting range: 0 to 3998 mV
A12 ORP fluctuation alarm band
Setting range: 0 to 3998 mV
A21 ORP fluctuation alarm band
Setting range: 0 to 3998 mV
A22 ORP fluctuation alarm band
Setting range: 0 to 3998 mV
A11 High/Low limits independent
lower side value
Setting range: 0 to 3998 mV
A12 High/Low limits independent
lower side value
Setting range: 0 to 3998 mV
A21 High/Low limits independent
lower side value
Setting range: 0 to 3998 mV
A22 High/Low limits independent
lower side value
Setting range: 0 to 3998 mV

66

Factory Default
0 seconds
0 seconds
0 seconds
0 seconds
0 seconds
0 seconds
0 seconds
0 seconds
0 hours
0 hours
0 hours
0 hours
0 mV
0 mV
0 mV
0 mV
0 mV

0 mV

0 mV

0 mV

Data

Character

Setting Item, Setting Range
A11 High/Low limits independent
upper side value
Setting range: 0 to 3998 mV
A12 High/Low limits independent
upper side value
Setting range: 0 to 3998 mV
A21 High/Low limits independent
upper side value
Setting range: 0 to 3998 mV
A22 High/Low limits independent
upper side value
Setting range: 0 to 3998 mV
A11 hysteresis
Setting range: 1 to 200 mV
A12 hysteresis
Setting range: 1 to 200 mV
A21 hysteresis
Setting range: 1 to 200 mV
A22 hysteresis
Setting range: 1 to 200 mV

67

Factory Default
0 mV

0 mV

0 mV

0 mV

10 mV
10 mV
10 mV
10 mV

Data

Basic Function Group
Character
Setting Item, Setting Range
Factory Default
Set value lock
Unlock: Unlock: Lock 1: Lock 2: Lock 3
Communication protocol
Shinko protocol: Shinko protocol: MODBUS ASCII mode
: MODBUS RTU mode
Instrument number
0
Setting range: 0 to 95
Communication speed
9600 bps: 9600 bps: 19200 bps: 38400 bps
Data bit/Parity
7 bits/Even: 8 bits/No parity: 7 bits/No parity: 8 bits/Even: 7 bits/Even: 8 bits/Odd: 7 bits/Odd
Stop bit
1 bit: 1 bit: 2 bits
Transmission output high limit
1999 mV
Setting range: Transmission output low limit to 1999 mV
Transmission output low limit-1999 mV
Setting range: -1999 mV to Transmission output high limit
Transmission output status in
Last value HOLD
Adjustment Mode / Span Sensitivity
Correction Mode: Last value HOLD
: Set value HOLD
: Measured value
0 mV
Transmission output value HOLD in
Adjustment Mode / Span Sensitivity
Correction Mode
Setting range: -1999 to 1999 mV
Auto-light function: Disabled: Enabled
Setting Display indication: No indication: A11 value: A12 value: A21 value: A22 value
Indication time
00.00 (Remains lit)
00.01 to 60.00 (Minutes.Seconds)
68

Disabled

No indication

00.00 (Remains lit)

Data

Character

Setting Item, Setting Range
Factory Default 
A1 output allocation
A11 type: A11 type
: A12 type
: A21 type
: A22 type
: A11, A12 types: A21, A22 types: A11, A21 types: A12, A22 types: A11, A12, A21, A22 types
A2 output allocation
A21 type: A11 type
: A12 type
: A21 type
: A22 type
: A11, A12 types: A21, A22 types: A11, A21 types: A12, A22 types: A11, A12, A21, A22 types
Output ON time when A1 output ON
0 seconds
Setting range: 0 to 9999 seconds
Output OFF time when A1 output ON 0 seconds
Setting range: 0 to 9999 seconds
Output ON time when A2 output ON
0 seconds
Setting range: 0 to 9999 seconds
Output OFF time when A2 output ON 0 seconds
Setting range: 0 to 9999 seconds
A1 ORP input error alarm A
type
No action: No action: A11 type
: A12 type
: A21 type
: A22 type
A2 ORP input error alarm A
type
No action: No action: A11 type
: A12 type
: A21 type
: A22 type
A1 ORP input error alarm band
0 mV
when Aoutput ON
Setting range: 0 to 1999 mV
A1 ORP input error alarm time
0 seconds
when Aoutput ON
Setting range: 0 to 9999 seconds or minutes

69

Data

Character

Setting Item, Setting Range
Factory Default 
A1 ORP input error alarm band
0 mV
when Aoutput OFF
Setting range: 0 to 1999 mV
0 seconds
A1 ORP input error alarm time
when Aoutput OFF
Setting range: 0 to 9999 seconds or minutes
A2 ORP input error alarm band
0 mV
when Aoutput ON
Setting range: 0 to 1999 mV
0 seconds
A2 ORP input error alarm time
when Aoutput ON
Setting range: 0 to 9999 seconds or minutes
A2 ORP input error alarm band
0 mV
when Aoutput OFF
Setting range: 0 to 1999 mV
A2 ORP input error alarm time
0 seconds
when Aoutput OFF
Setting range: 0 to 9999 seconds or minutes
ORP input error alarm time unit
Second(s): Second(s): Minute(s)Number of cleansing cycles
0 (Continuous cleansing)
Setting range: 0 to 10 (When set to 0: Continuous cleansing)
Cleansing interval
360 minutes
Setting range: 60 to 3000 minutes
Cleansing time
600 seconds
Setting range: 1 to 1800 seconds
Restore time after cleansing
600 seconds
Setting range: 1 to 1800 seconds
Transmission output status when
Last value HOLD
cleansing: Last value HOLD
: Set value HOLD
: Measured value
Transmission output value HOLD
0 mV
when cleansing
Setting range: -1999 to 1999 mV

70

Data

71

***** 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-101-ORP• 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, Japan
http://www.shinko-technos.co.jp/e/
URL:
Tel : +81-72-727-6100
overseas@shinko-technos.co.jp
E-mail:Fax: +81-72-727-7006
No. WIL11CORPE3 2019.11