REMOTE I/O

RA SERIESINSTRUCTION MANUALPreface
Thank you for purchasing the Remote I/O, RA series.

This manual contains instructions for the mounting, functions, operations and notes when
operating the RA series. To prevent accidents arising from the misuse of this instrument, please
ensure the operator receives this manual.

Notes• 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 the warnings, cautions and notices. If they are not observed, serious injury or
malfunction may occur.
• Specifications of the RA series and the contents of this instruction manual are subject to change
without notice.
• Care has been taken to assure 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 does not 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 aresult of using this product, including any indirect damage.
SAFETY PRECAUTIONS (Be sure to read these precautions before using our products.)
The safety precautions are classified into categories: “Warning” and “Caution”.
Depending on circumstances, procedures indicated by
Caution may cause serious results,
so be sure to follow the directions for usage.
which may lead to dangerous conditions andWarning Procedurescause death or serious injury, if not carried out properly.

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

Warning• To prevent an electric shock or fire, only Shinko or qualified service personnel may handle
the inner assembly.
• To prevent an electric shock, fire or damage to the instrument, parts replacement may only
be undertaken by Shinko or 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 industrial machinery, machine tools and measuring
equipment. Verify correct usage after consulting purpose of use with our agency or main office.
(Never use this instrument for medical purposes with which human lives are involved.)• External protection devices such as protection 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. Also proper periodic maintenance is required.
• This instrument must be used under the conditions and environment described in this manual.
Shinko Technos Co., Ltd. does not accept liability for any injury, loss of life or damage occurring
due to the instrument being used under conditions not otherwise stated in this manual.
Caution with respect to Export Trade Control Ordinance
To avoid this instrument from being used as a component in, or as being utilized in the manufactureof weapons of mass destruction (i.e. military applications, military equipment, etc.), please
investigate the end users and the final use of this instrument.
In the case of resale, ensure that this instrument is not illegally exported.
2

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 -5 to 55 (23 to 131 )that does not change 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 or chemicals or where the vapors of these substances can come into
direct contact with the unit
• When installing this unit within a control panel, take note that ambient temperature ofthis unit as well as the control panel must not exceed 55 . Otherwise the life ofelectronic components (especially electrolytic capacitor) may be shortened.
Note • Avoid setting this instrument directly on or near flammable material even though
the case of this instrument is made of flame-resistant resin.

2. Wiring precautions

Caution• Do not leave bits of wire in the instrument, because they could cause a fire or malfunction.
• When wiring terminals, use ferrules with an insulation sleeve and crimping pliers madeby Phoenix Contact GMBH & CO. applicable to terminals.
• Tighten the terminal screw using the specified torque. If excessive force is applied tothe screw when tightening, the screw or case may be damaged.
• This instrument has no built-in power switch, circuit breaker or fuse. It is necessary to
install them near the instrument.
(Recommended fuse: Time-lag fuse, rated voltage 250V AC, rated current 2A)• For wiring of AC power source, be sure to use exclusive terminals as described in thismanual. If AC power source is connected to incorrect terminals, the unit will burn out.
• For a 24V DC power source, do not confuse polarity when wiring.
• Do not apply a commercial power source to the sensor connected to the input terminal nor
allow the power source to come into contact with the sensor, as the input circuit may burn out.
• Use a thermocouple, compensating lead wire and 3-wire system RTD according to thesensor input specifications of this unit.
• When using DC voltage and current input, do not confuse polarity when wiring.
• Keep the input wire (TC, RTD, etc.), power line and communication line away from one another.

3. Operation and maintenance precautions

Caution• Do not touch live terminals. This may cause electric shock or problems in operation.
• Turn the power supply to the instrument OFF when retightening the terminal orcleaning. Working or touching the terminal with the power switched ON may result insevere injury or death due to Electric 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, do not strike or scratch it with a hard object orpress hard on it.
3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

Alphabet
N
O
P
Q
R
S
T
U
V
means that no character is indicated (unlit) on the display.

W

X

Y

Z

Indication
Alphabet
Indication---

CONTENTS ---1. ModelPage

1.1 Model ----------------------------------------------------------------------------- 5
1.2 How to read the model label ------------------------------------------------ 5
2. Name and functions of sections ------------------------------------ 6
3. System configuration ----------------------------------------------------- 7

4. Mounting

4.1 External dimensions ---------------------------------------------------------- 7
4.2 Mounting to and removal from the DIN rail ----------------------------- 8

5. Wiring

5.1 Recommended ferrules ------------------------------------------------------ 9
5.2 Terminal arrangement and circuit configuration ----------------------- 9
5.3 Wiring --------------------------------------------------------------------------- 10
6. Operation flowchart ------------------------------------------------------ 12
7. Setup ----------------------------------------------------------------------------- 14
7.1 Indication after power-on -------------------------------------------------- 15
7.2 Basic operation of settings ------------------------------------------------ 16
7.3 Setup of the unit ------------------------------------------------------------- 17
7.4 Communication parameters setting ------------------------------------ 21

8. Communication

8.1 Communication procedure ----------------------------------------------- 22
8.2 Shinko protocol ------------------------------------------------------------- 22
8.3 Modbus protocol ------------------------------------------------------------- 27
8.4 Communication command table ----------------------------------------- 34

9. Unit operation

9.1 Indication after power-on -------------------------------------------------- 41
9.2 Unit operation ---------------------------------------------------------------- 43

10. Adjustment

10.1 Basic operation of adjustment ------------------------------------------ 44
10.2 Adjustment ------------------------------------------------------------------- 45
11 Specifications ---------------------------------------------------------------- 46

12. Troubleshooting

12.1 Indication --------------------------------------------------------------------- 49
12.2 Key operation --------------------------------------------------------------- 50
12.3 Unit operation -------------------------------------------------------------- 50
12.4 Communication ------------------------------------------------------------ 50
13. Character table ------------------------------------------------------------- 51
4

1. Model
1.1 Model
RA series
RA

Remote I/O input unit

Remote I/O output unit

–
U
E
R
A
V
P
O
0
1

Power supply

Series name: RA
Universal (*)
Thermocouple
RTD
DC current
DC voltage
Potentiometer
DC voltage, DC current
100 to 240V AC
24V AC/DC(*) RAU (Universal input unit) accepts all types of input (thermocouple, RTD,
DC current, DC voltage and potentiometer).
(e.g.) RAU-0
Remote I/O type: Universal input unit, Power supply: 100 to 240V AC
Default value: Input; K -200 to 1370
1.2 How to read the model label
The model label is attached to the left side of the case.
[RAU, RAE, RAR, RAA, RAV, RAP]
Model
Input (Enter a range selected during Input range selection.)
Serial number(Fig. 1.2-1)
[RAO]
Model
Output (Enter a range selected during Output type selection.)
Serial number(Fig. 1.2-2)

5

2. Name and functions of sections[RAU, RAE, RAR, RAA, RAV, RAP]

6

1
2
3

4

7

5

8

(Fig.2.1)[RAO]

1 Power indicator (Green)

The green LED lights when the power to the
instrument is turned on.
2 Input display (Red)
Indicates the input value during Run mode.
Indicates characters of setting (or adjustment)
item during the Setup, Communication parametersetting and Adjustment mode.
3 Input % display (Green)
Indicates the input value (%) during Run mode.
Indicates set (or adjusted) value during the
Setup, Communication parameter setting andAdjustment mode.
4 Up key ():Increases the numeric value, or
switches the selection items.
5 Down key (): Decreases the numeric value, or
switches the selection items.
6 Communication indicator (Yellow)
Lights when sending data (TX output).
7 Mode key ()
Switches the setting mode, and registers theset (or selected) value.
By holding down this key for approx. 3 seconds,
the unit proceeds to the Adjustment mode.
8 Sub-mode key (Unmarked)
If the Mode key is pressed while holding down thiskey, the unit proceeds to the Setup mode.
1 Power indicator (Green)

6

1
2
3

4

7

5

8

(Fig.2.2)

The green LED lights when the power to the
instrument is turned on.
2 Setting character display (Red)
Indicates characters of setting (or adjustment)
item during the Setup, Communication parametersetting and Adjustment mode.
3 Output % display (Green)
Indicates the output volume (%) during Run mode.
Indicates set (or adjusted) value during the Setup,
Communication parameter setting and Adjustment
mode.
4 Up key (): Increases the numeric value, or
switches the selection items.
5 Down key (): Decreases the numeric value, or
switches the selection items.
6 Communication indicator (Yellow)
Lights when sending data (TX output).
7 Mode key ()
Switches the setting mode, and registers theset (or selected) value.
By holding down this key for approx. 3 seconds,
the unit proceeds to the Adjustment mode.
8 Sub-mode key (Unmarked)
If the Mode key is pressed while holding down thiskey, the unit proceeds to the Setup mode.
6

3. System configuration
The following shows the system configuration of the RA series.
When Shinko communication converter (IF-400) is used as a repeater, up to
3 units of the repeater and up to 95 units of the RA series can be connected.
Refer to the Instruction manual for the IF-400 series for details.
Communication converter IF-400
RS-232C
RS-485RA series
No.0

RA series
No.1

RA series
No.30

Host computeror
PLC

Input or output(Fig. 3-1)

4. Mounting
4.1 External dimensions (Scale: mm)

75

DIN rail

97
22.5

100
(Fig. 4.1-1)

7

4

4.2 Mounting and removal to/from the DIN rail

Caution• Mount the DIN rail horizontally.
• To remove this instrument, a flat bladed screwdriver is required for pulling
down the release lever.
Never turn the screwdriver when inserting it into the release lever.
If excessive power is applied to the lever, it may break.
• Be sure to use commercially available fastening plates at both ends of the unit
if it is in a position susceptible to vibration or shock.
Recommended fastening plate
Manufacturer
Omron Corporation
IDEC Corporation
Panasonic Electric Works Co. Ltd.

Model
End plate
PFP-M
Fastening plate BNL6
Fastening plate ATA4806

Mounting to the DIN rail (Fig. 4.2-1)• Hook 1 of the instrument on the upper side of the DIN rail.
• Making 1 part of the instrument as a support, fit the lower part 2 of the instrument
to the DIN rail.
The unit will be completely fixed to the DIN rail when a “Click” sound is heard.
12(Fig. 4.2-1)

Removal from the DIN rail (Fig.4.2-2)• Insert a flat bladed screwdriver into the release lever ( 1 ).
• Remove the instrument from the DIN rail by pulling down the lever ( 2 ).

2

(Fig. 4.2-2)

1

Release lever85. Wiring
Warning
Turn the power supply to the instrument off before wiring.
Working or touching the terminal with the power switched on may result insevere injury or death due to Electric Shock.
5.1 Recommended ferrules
When using ferrules, use the following recommended ferrules and crimping pliers madeby Phoenix Contact GMBH &CO. See (Table 5.1-1).
Take note that screw size and tightening torque differ depending on the terminal number.
(Table 5.1-1)
withTerminal Terminal Ferrules
Conductor
Tightening
insulation
Crimping pliers
numberscrew
cross
sections
torquesleeve1 to 45 to 9M2.6

M2.0

AI 0.25-8 YE
AI 0.34-8 TQ
AI 0.5-8 WH
AI 0.75-8 GY
AI 1.0-8 RD
AI 1.5-8 BK
AI 0.25-8 YE
AI 0.34-8 TQ
AI 0.5-8 WH

0.2 to 0.25mm2 0.5 to 0.6N•m
0.25 to 0.34mm2
0.34 to 0.5mm2
0.5 to 0.75mm2
0.75 to 1.0mm2
1.0 to 1.5mm2
0.2 to 0.25mm2 0.22 to 0.25N•m
0.25 to 0.34mm2
0.34 to 0.5mm2

5.2 Terminal arrangement and circuit configuration[RAU, RAE, RAR, RAA, RAV, RAP]

(Fig. 5.2-1)
9

CRIMPFOXZA 3
CRIMPFOX
UD 6

[RAO](Fig. 5.2-2)
5.3 Wiring

Warning• For 100 to 240V AC, if AC power source is connected to incorrect terminals, this
instrument will burn out.
• For a 24V DC power source, do not confuse polarity when wiring.
5.3.1 Power supply wiring
Use terminals 1 (+) and2 (-) for the power supply to the instrument. (Fig. 5.2-1, 5.2-2)

5.3.2 Input, Output wiring[RAU, RAE, RAR, RAA, RAV, RAP]
Terminals for wiring are different depending on the input specifications. (Fig. 5.2-1)
For the RAU (DC current input), RAA: Use terminals 5 (+), 6 (-) for input wiring andshunt resistor (sold separately) connection. (See Table 5.3.2-1)(Table 5.3.2-1)
Shunt resistor
Input
Model
Specification
4 to 20mA DC, 0 to 20mA DC, 0 to 16mA DC RES-S02-050
50
0.1%
2 to 10mA DC, 0 to 10mA DC
RES-S02-100
100
0.1%
1 to 5mA DC
RES-S02-200
200
0.1%
0 to 1mA DC
RES-S02-01K
1k
0.1%
[RAO]
Use terminals

3 (+) and4 (-) for the output wiring. (Fig. 5.2-2)

10

5.3.3 Communication wiring
Wire the communication line, referring to (Fig.5.3.3-1)
When using Shinko communication converter (IF-400) as a repeater, up to
3 units of the repeater and up to 95 units of the RA series can be connected.
Refer to the Instruction manual for the IF-400 for details.
Host computer
RA series (Max. 31 units)
Shieldedwire

D-sub 9-pin connector

CDD or CPP

CDD

Host computer
RA series (Max. 31 units)
Shieldedwire

D-sub 25-pin connector

CDD or CPP

CDD(Fig. 5.3.3-1)

Shielded wire
Connect only one side of the shielded wire to the FG terminal so that current cannot
flow to the shielded wire.
If both sides of the shielded wire are connected to the FG terminal, the circuit will beclosed between the shielded wire and the ground. As a result, current will run throughthe shielded wire and this may cause noise.
Be sure to ground FG terminal.
Recommended cable: OTSC-VB 2PX0.5SQ (made by Onamba Co., Ltd.) or equivalent116. Operation flowchart[RAU, RAE, RAR, RAA, RAV, RAP]
Power ONWarm-up indication (Approx. 3sec.)

Run mode

Hold down the
key approx. 3sec.
Adjustment modeIN
Potentiometer
input zero
OUT
adjustment
Press thekey.
IN
Potentiometer
input span
OUT
adjustment
Press thekey.

Press thekey while holding
down the Sub-mode key.

Press thewhileholding down the.
Communication parametersetting modeIN
Communication
protocolOUT

Setup modeIN

Set value lock

OUT

IN

Press thekey.
Input type

OUT

IN
OUT

IN
OUT

IN

OUT

Press thekey.
Input range(*)

IN

Press thekey.
Decimal point
place

IN

Press thekey.
0% value

OUT

IN

IN

OUT

OUT

IN
OUT

Press thekey.
100% value

OUT

IN

Filter time
constant

IN
OUT

Press thekey.
Sensorcorrection

IN

Press theBurnout
selection

key.
IN

Press theDisplay
selection

key.

OUT

Press thekey.
Instrument
numberPress thekey.
Communication
speed
Press theParitykey.

Press theStop bitkey.

Press the

key.

OUT

IN
OUT

Press thekey.
Indication time

OUT

Press thekey.

Press thekey.

•
The items with dotted lines are not indicated depending on the specification.
• Adjustment mode is available for the RAP or RAU potentiometer input type.
To return from Adjustment to Run mode, hold down the
key for approx. 3 sec. From any
setting item in Adjustment mode, it is possible to return to Run mode.
(*) Selected item differs depending on the Input type.
12

[RAO]
Power ONWarm-up indication (Approx. 3sec.)

Run mode

Hold down the
key for approx. 3sec.

Press thewhileholding down the
Sub-Mode key.

Adjustment mode
IN
OUT

IN
OUT

Output zeroadjustment
Press thekey.
Output span
adjustment
Press theSetup modeIN

Set value lock

OUT

IN

Press thekey.
Output type

OUT

key.
IN
OUT

IN

Press thewhileholding down.
Communication parametersetting modeIN
Communication
protocol
OUT
IN
OUT

Press thekey.
Display
selection
Press thekey.
Indication time

OUT

IN
OUT

IN

Press thekey.
Instrument
numberPress thekey.
Communication
speed
Press theParitykey.

Press theStop bitkey.

Press the

key.

OUT

Press the

key.
IN
OUT

•

The items with dotted lines are not indicated depending on the specification.

• To return from Adjustment to Run mode, hold down the
key for approx. 3sec. From any
setting item in Adjustment mode, it is possible to return to Run mode.

13

7. Setup
Setup and communication parameter setting should occur before using this unit.
Default value: (Table 7-1), (Table 7-2), (Table 7-3)
If the users’ specification is the same as the default value of the instrument, or
if setup has already been completed, it is not necessary to set up the instrument.
Proceed to Section “8. Communication”.
Setup [RAU, RAE, RAR, RAA, RAV, RAP]
(Table 7-1)
Setting item
Default value
Set value lock
UnlockInput type
Thermocouple (Available only for RAU)
RAU, RAE
K –200 to 1370
RAR
Pt100 –200 to 850
Input range
RAA
4 to 20mA DC –1999 to 9999
RAV
1 to 5V DC –1999 to 9999
RAP
Not available
Decimal point place
No decimal point
RAU, RAE, RAR-200
0% value
RAA, RAV, RAP-1999
RAU, RAE
1370
100% value
RAR
850
RAA, RAV, RAP
9999
Filter time constant0.0secSensor correction
0.0
Upscale (Available for RAE, RAR, or when thermocouple or
Burnout selection
RTD is selected during RAU input type selection)
Display selection
Input value/Input % display
Indication time
00.00 (continuous)
Setup [RAO](Table 7-2)
Setting item
Set value lock
Output type
Display selection
Indication time

Default value
Unlock4 to 20mA DC
Output % display
00.00 (continuous)

Communication parameter setting(Table 7-3)
Setting item
Default value
Communication protocol Shinko protocol
Instrument number
0Communication speed
9600bpsEven (Not available if Shinko protocol is selected during
ParityCommunication protocol selection.)
1 (Not available if Shinko protocol is selected during
Stop bit
Communication protocol selection.)147.1 Indication after power-on
After power supply to the unit is turned on, warm-up status below (Fig. 7.1-1, 7.1-2) isindicated for approx. 3sec.
[RAU, RAE, RAR, RAA, RAV, RAP]
Indicates the input range.
Indicates
for the RAU (Default: K, -200 to 1370 ).
Lights whenpower-on.

(Fig. 7.1-1)[RAO]

Indicates the output type.
Indicatesin the case of “4 to 20mA DC”.

Lights whenpower-on.

(Fig. 7.1-2)

After the warm-up indication, the unit switches to the Run mode (Fig. 7.1-3, 7.1-4)
as shown below.
[RAU, RAE, RAR, RAA, RAV, RAP]
Indicates the input value.
Indicates the input value for the RAU (thermocouple).
(Default: K, -200 to 1370 )Indicateswhen nothing is connected tothe input terminals.
Indicates the input value in a percentage form(%).
(Fig. 7.1-3)

15

[RAO]

Indicates the output value in a percentage form(%).

(Fig. 7.1-4)
7.2 Basic operation of settings
Settings are conducted in the Setup and Communication parameter setting mode.
To enter the Setup mode, press the
key while holding down the Sub-mode key in
the Run mode. (Fig. 7.2-1)
To enter the Communication parameter setting mode, press the
key while holding
down thekey in the Run mode.
To set (or select) each item, use theorkey, and register the value with the
key.
(Fig. 7.2-2)
Setup mode operation example (RAU)(1) Run mode2

To enter the Setup mode, press the2
key while holding down the
1 Sub-mode key in the Run mode.

1(Fig. 7.2-1)(2) Setup mode

Sets (or selects)
each setting item.

Proceeds to each setting (or selection)
item, and registers the set (or selected)
value.
(Fig. 7.2-2)
16

7.3 Setup of the unit
The following shows all setting items. Set up the unit by referring to the following.
[RAU, RAE, RAR, RAA, RAV, RAP] (For the RAO, see p.20.)
Display
IN

OUT

IN

OUT

IN

OUT

Name, Function, Setting range
Default value
Set value lock
UnlockLocks the set values to prevent setting errors.
: Unlock: Lock (None of the set values and adjusted values can bechanged.)Input type
Thermocouple
Selects an input type.
Available only for the RAU.
: Thermocouple: RTD: DC current: DC voltage: Potentiometer (Input range selection item is not indicated.)
Thermocouple input range
K, -200 to 1370 (RAU, RAE)
Selects the input range of thermocouple.
Available for the RAU (thermocouple input) and RAE.
:K-200 to 1370
: K (*)-200 to 200: K (*)
0 to 400:J-200 to 1000
: J (*)-200 to 200: J (*)
0 to 400:R-50 to 1760
:S
-50 to 1760
0 to 1820:B-200 to 800:E-200 to 400: T (*)-200 to 1300
:N
0 to 1390: PL0 to 2315
: W5Re/W26Re
0 to 2315: W3Re/W25Re:K: K (*): K (*):J: J (*): J (*):R:S:B:E: T (*):N: PL: W5Re/W26Re: W3Re/W25Re-328 to 2498
-328 to 392
32 to 752
-328 to 1832
-328 to 392
32 to 752
-58 to 3200
-58 to 3200
32 to 3308
-328 to 1472
-328 to 752-328 to 2372
32 to 2534
32 to 4199
32 to 4199
17

IN

OUT

IN

OUT

IN

OUT

IN

OUT

or

RTD input range
Pt100, -200 to 850 (RAU, RAR)
Selects RTD input range.
Available for the RAU (RTD input) and RAR.
: Pt100-200 to 850: Pt100 (*)-100 to 100: JPt100-200 to 500: Pt100-328 to 1562
: Pt100 (*)-148 to 212: JPt100-328 to 932
DC current input range
4 to 20mA DC -1999 to 9999 (RAU, RAA)
Selects DC current input range.
Available for the RAU (DC current input) and RAA.
: 4 to 20mA DC-1999 to 9999
: 0 to 20mA DC-1999 to 9999
: 0 to 16mA DC-1999 to 9999
: 2 to 10mA DC-1999 to 9999
: 0 to 10mA DC-1999 to 9999
: 1 to 5mA DC-1999 to 9999
: 0 to 1mA DC-1999 to 9999
DC voltage input range
0 to 10mV DC -1999 to 9999 (RAU)
1 to 5V DC -1999 to 9999 (RAV)
Selects DC voltage input range.
Available for the RAU (DC voltage input) and RAV.
: 0 to 10mV DC-1999 to 9999
: -10 to 10mV DC -1999 to 9999
: 0 to 50mV DC-1999 to 9999
: 0 to 60mV DC-1999 to 9999
: 0 to 100mV DC -1999 to 9999
: 0 to 1V DC-1999 to 9999
: 0 to 5V DC-1999 to 9999
: 1 to 5V DC-1999 to 9999
: 0 to 10V DC-1999 to 9999
No decimal point
Decimal point place
Selects the decimal point place.
Available for the RAU (DC current, DC voltage, potentiometer input), RAA,RAV and RAP.
Available for the RAU, RAE and RAR when (*) range is selected during
Input range selection.
For thermocouple and RTD input, “No decimal point” or “1 digit after
decimal point” can be selected.
: No decimal point: 1 digit after decimal point: 2 digits after decimal point: 3 digits after decimal point

18

IN

OUT

IN

OUT

IN

OUT

IN

OUT

IN

OUT

IN

OUT

IN

OUT

0% value

RAU, RAE, RAR: -200
RAA, RAV, RAP: -1999
Sets a value to be indicated on the Input display when an input is 0%.
Refer to [0%, 100% value setting example] below.
Setting range:
Thermocouple, RTD: Input range low limit to 100% value
DC current, DC voltage, potentiometer: -1999 to 100% value
100% value
RAU, RAE: 1370
RAR: 850
RAA, RAV, RAP: 9999
Sets a value to be indicated on the Input display when an input is 100%.
Refer to [0%, 100% value setting example] below.
Setting range:
Thermocouple, RTD: 0% value to Input range high limit
DC current, DC voltage, potentiometer: 0% value to 9999
0.0 seconds
Filter time constantSets the filter time constant.
Reduces input fluctuation caused by noise.
Setting range: 0.0 to 10.0 seconds
0.0
Sensor correction
Sets the sensor correction value.
Input value = Current input value + (Sensor correction value)
Setting range: Thermocouple, RTD: -100.0 to 100.0 ( )DC current, DC voltage, potentiometer: -1000 to 1000
UpscaleBurnout selection
Selects either Upscale (110.0%) or Downscale (-10.0%) output when
input is burnt out.
Available for the RAU (thermocouple, RTD input), RAE and RAR.
Setting range:: Upscale: Downscale
Input/Input % display
Display selection
Selects the display to be indicated.
: Input/Input % display: Input display: Input % display: No indication (Power and communication indicators are lit.)
00.00 (Continuous)
Indication time
Sets the indication time of the display after the final key operation.
Not available if “No indication” is selected during Display selection (Powerand communication indicators are lit).
After the indication time has elapsed, the displays go off (Power andcommunication indicators are lit.).
If power is turned on again, or if any one of the,,or Sub-mode
key is pressed while displays are unlit, the displays will light again.
Setting range: 00.00: Continuous
00.01 (1 second) to 60.00 (60 minutes) (Minute.Second)[0%, 100% value setting example](e.g.) RAU (DC current input), or RAA: 4 to 20mA DC input,
0% value: 100.0, 100% value: 300.0
Input
4mA DC (0%) 12mA DC (50%) 20mA DC (100%)
Input display
100.0
200.0
300.0
Input % display
0.0
50.0
100.0
19

[RAO]
Set up the unit referring to the following.
Display
IN

OUT

IN

OUT

IN

OUT

IN

OUT

Name, Function, Setting range
Default value
Set value lock
UnlockLocks the set values to prevent setting errors.
: Unlock: Lock (None of the set value and adjusted value can bechanged.)4 to 20mA DC
Output type
Selects the output type.
: 4 to 20mA DC: 0 to 20mA DC: 0 to 12mA DC: 0 to 10mA DC: 1 to 5mA DC: 0 to 1V DC: 0 to 5V DC: 1 to 5V DC: 0 to 10V DC
Output % display
Display selection
Selects the display to be indicated.
: Output % display: No indication (Power and Communication indicators are lit.)
00.00 (Continuous)
Indication time
Sets the indication time of the display after the final key operation.
Not available if No indication is selected during Display selection (powerand communication indicators are lit)
After the indication time has elapsed, the displays go off (Power andcommunication indicators are lit.).
If power is turned on again, or if the,,or Sub-mode key ispressed while displays are unlit, the displays will light again.
Setting range:
00.00: Continuous
00.01 (1 second) to 60.00 (60 minutes) [Minute.Second]20

7.4 Communication parameters setting
Display
IN
OUT

IN
OUT

IN
OUT

IN
OUT

IN
OUT

Name, Function, Setting range
Default value
Communication protocol
Shinko protocol
Selects the communication protocol.
: Shinko protocol: Modbus ASCII: Modbus RTU
Instrument number
0
Sets the instrument number individually to each instrument whencommunicating by connecting plural instruments.
Setting range: 0 to 95
Communication speed
9600bps
Selects a communication speed equal to that of the host computer.
: 2400bps: 4800bps: 9600bps: 19200bps
ParityEven
Selects the parity.
Not available if Shinko protocol is selected during Communication
protocol selection.
: No parity: Even: Odd
Stop bit1
Selects the stop bit.
Not available if Shinko protocol is selected during Communication
protocol selection.
:1
:2

21

8. Communication
8.1 Communication procedure
Communication starts with command transmission from the host computer (hereafter
Master) and ends with the response of the RA series (hereafter Slave).
MasterCommand
Data

Slave

Command
Acknowledgement
Command
Negative
acknowledgement
Command
No response(Fig. 8-1)

• Response with data
When the master sends the reading command,the slave responds with the corresponding set
value or current status.
• Acknowledgement
When the master sends the setting command,the slave responds by sending theacknowledgement after processing is terminated.
• Negative acknowledgement
When the master sends a non-existent commandor value out of the setting range, the slave returns
a negative acknowledgement.
• No response
The slave will not respond to the master in caseof the following.
• Global address (Shinko protocol) is set.
• Broadcast address (Modbus protocol) is set.
• Communication error (Framing error, Parity error)• Checksum error (Shinko protocol)• LRC discrepancy (Modbus ASCII mode)• CRC-16 discrepancy (Modbus RTU mode)

Communication timing of the RS-485
Slave side
When the slave starts transmission through the 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 the 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.
Master side (Notice on programming)
Set the program so that the master can disconnect the transmitter from the communicationline within a 1 character transmission period after sending the command in preparation
for reception of the response from the slave.
To avoid a collision of transmissions between the master and the slave, send the next
command after carefully checking that the master received the response.
8.2. Shinko protocol
8.2.1 Transmission mode
Shinko protocol is composed of ASCII codes.
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: Checksum228.2.2 Command configuration
All commands are composed of ASCII.
The data (set value, decimal number) is represented with hexadecimal figures.
The negative numbers are represented with 2's complement.
Numbers (1, 2, 4) below the command represent the number of characters.
(1) Setting command
HeaderAddress
(02H)
1
1

1

Commandtype(50H)
1

Data
item
4

(2) Reading command
HeaderAddress
20H
(02H)
1
1
1

Commandtype(20H)
1

Data
item
4

(3) Response with data
HeaderAddress
20H
(06H)
1
1
1

Commandtype(20H)
1

Data
item
4

20H

Data

Checksum422Delimiter
(03H)
1

Data

Checksum4

2

Checksum

Delimiter(03H)
1

Delimiter(03H)
1(4) Acknowledgement
HeaderDelimiter
Address Checksum
(06H)
(03H)
1
1
2
1
(5) Negative acknowledgement
Header
Error
Delimiter
Address
Checksum
(15H)
code
(03H)
1
1
1
2
1
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
Address (Instrument number): Numbers by which the master discerns each slave.
Instrument number 0 to 94 and Global address 95.
ASCII codes (20H to 7EH) 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 samecommand is sent to all the slaves connected. However, the response
is not returned.
Command type : Code to discern Setting command (50H) and Reading command (20H)
Data item: Data classification of the command object
Composed of hexadecimal 4 digits, using ASCII.
(Refer to “8.4 Communication command table”.)
Data: The contents of data (set value) differ depending on the setting command.
Composed of hexadecimal 4 digits, using ASCII.
(Refer to “8.4 Communication command table”.)
Checksum: 2-character data to detect communication errors.
(Refer to “8.2.3 Checksum calculation”.)
Delimiter: Control code to represent the end of command. 03H fixedError code
: Represents an error type with ASCII codes.
1 (31H)-----Non-existent command
2 (32H)-----Not used
3 (33H)-----Setting outside the setting range
4 (34H)-----Status unable to be set
5 (35H)-----During setting mode by keypad operation
23

8.2.3 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 from the slaves so that the communication errors can be checked.
The ASCII code (hexadecimal) corresponding to the characters which range from theaddress to that before the checksum is converted to binary notation, and the total value
is calculated.
The lower 2-digit of the total value are converted to 2’s complement, and then tohexadecimal figures, that is, ASCII code for the checksum.
Checksum calculation example
100% setting: 1000 (03E8H)
Address (instrument number): 1 (21H)• 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 range[e.g.]
STX

!

P

0

0

0

6

0

3

E

8

30H

33H

45H

38H

C

9

ETX

[Characters above are represented by ASCII]
02H

21H

20H

50H

30H

30H

30H

36H

43H 39H

Checksum[Hexadecimal]
21H
20H
50H
30H
30H
30H
36H
30H
33H
45H
+ 38H

[Binary]0010 0001
0010 0000
0101 0000
0011 0000
0011 0000
0011 0000
0011 0110
0011 0000
0011 0011
0100 0101
0011 1000[1's complement]

1100 1000
1+[2's complement] 1100 1001
[Hexadecimal][ASCII]

10 0011 0111

C

9

43H

39H

Checksum

24

03H

8.2.4 Command example(1) Setting (Address 1, 0% value)• Setting command from the master [When setting 0% value to 0
Header Address
Command
type
(02H)
(21H)
(20H)
(50H)

(0000H)]

Data item
Data
Checksum Delimiter[0005H][0000H](30H 30H 30H 35H) (30H 30H 30H 30H) (45H 41H) (03H)• Response from the slave in normal status
Header Address Checksum Delimiter
(06H)

(21H)

(44H 46H)(03H)• Negative acknowledgement from the slave during setting mode by keypad
Header Address
Error
Checksum Delimiter
code
(15H)
(21H)
(35H) (41H 41H) (03H)(2) Setting (Address 1, 100% value)• Setting command from the master [When setting 100% value to 1000
Header Address
Command
type
(02H)
(21H)
(20H)
(50H)

(03E8H)]

Data item
Data
Checksum Delimiter[0006H][03E8H](30H 30H 30H 36H) (30H 33H 45H 38H) (43H 39H)
(03H)
• Response from the slave in normal status
Header Address Checksum Delimiter
(06H)

(21H)

(44H 46H)(03H)• Negative acknowledgement from the slave in case of a value out of range
Header Address
Error
Checksum Delimiter
code
(15H)
(21H)
(33H) (41H 43H) (03H)

25

(3) Reading (Address 1, input value)• Reading command from the master
Header Address
Command
Data item
Checksum Delimiter
type[0080H]
(02H)
(21H)
(20H)
(20H) (30H 30H 38H 30H) (44H 37H) (03H)• Response from the slave in normal status [27
Header Address
Command
type
(06H)
(21H)
(20H)
(20H)

(001BH)]

Data item
Data
Checksum Delimiter[0080H][001BH](30H 30H 38H 30H) (30H 30H 31H 42H) (30H 34H) (03H)• Negative acknowledgement from the slave in case of non-existent command
Header Address
Error
Checksum Delimiter
code
(15H)
(21H)
(31H) (41H 45H) (03H)(4) Reading (Address 1, 100% value)• Reading command from the master
Header Address
Command
Data item
Checksum Delimiter
type[0006H]
(02H)
(21H)
(20H)
(20H) (30H 30H 30H 36H) (44H 39H) (03H)• Response from the slave in normal status [When 100% value is 1000
Header Address
Command
type
(06H)
(21H)
(20H)
(20H)

(03E8H)]

Data item
Data
Checksum Delimiter[0006H][03E8H](30H 30H 30H 36H) (30H 33H 45H 38H) (46H 39H) (03H)(5) Setting (Address 1, Output MV) (for RAO)
• Setting command from the master[When setting the Output MV to 5000 (50.00%) (1388H)]
Header Address
Command
type
(02H)
(21H)
(20H)
(50H)
Data item
Data
Checksum Delimiter[000EH][1388H](30H 30H 30H 45H) (31H 33H 38H 38H) (43H 36H) (03H)• Response from the slave in normal status
Header Address Checksum Delimiter
(06H)

(21H)

(44H 46H)

(03H)

26

8.3 Modbus protocol
8.3.1 Transmission mode
There are 2 transmission modes (ASCII and RTU) in Modbus protocol.
8.3.2 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
Parity : Even (Odd, No parity) Selectable
Stop bit : 1 bit (2 bits) Selectable
Error detection : LRC (Longitudinal Redundancy Check)
Data interval : 1 second or less (Max.1sec of interval between characters)(1) Message configuration
ASCII mode message is configured to start by [: (colon)(3AH)] and end by [CR(carriage return) (0DH) + LF (Line feed)(0AH)].
HeaderSlave
FunctionError check
Delimiter Delimiter
Data(:)
address
code
LRC
(CR)
(LF)
Slave address
Slave address is an individual instrument number on the slave side and is set within therange 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 address in the response message.
Slave address 0 (00H, broadcast address) can identify all the slaves. However, slaves
do not respond.
Function code
The function code is the command code for the slave to undertake the following action types.
Function code
Contents
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 codeby mistake, slave returns 90H by setting the MSB to 1, because the former is an illegal
function.
For negative acknowledgement, the exception code below is set to the data of the
response message and returned to the master in order to inform it of what kind oferror has occurred.
Exception code
Contents
1 (01H)
Illegal function (Non-existent function)
2 (02H)
Illegal data address (Non-existent data address)
3 (03H)
Illegal data value (Value out of the setting range)
17 (11H)
Illegal setting (Status unable to be set)18 (12H)
Illegal setting (During setting mode by keypad operation)
27

Data
Data differs depending on the function code.
A request message from the master is composed of data item, number of data andsetting data. (Refer to “8.4 Communication command table”.)
A response message from the slave is composed of number of bytes, data andexception code in negative acknowledgement.
Only one piece of data can be dealt with per message.
Therefore the number of data for ASCII mode is fixed as (30H 30H 30H 31H).
Effective range of data is –32768 to 32767 (8000H to 7FFFH).
Error check: 2-character data to detect communication errors
Refer to “(2) Error check of ASCII mode” below.
(2) Error check of ASCII mode
After calculating LRC (Longitudinal Redundancy Check) from the slave address tothe end of data, the calculated 8-bit data is converted to two ASCII characters and areappended to the end of 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.
(3) Message example of ASCII mode
1 Setting (Slave address 1, 0% value)• A request message from the master [When setting 0% value to 0
HeaderSlave
Functionaddresscode(3AH) (30H 31H) (30H 36H)
Data item
Data[0005H][0000H](30H 30H 30H 35H) (30H 30H 30H 30H)

(0000H)]

Error check
LRC(46H 34H)

Delimiter
CR+LF(0DH 0AH)

Error check
LRC(46H 34H)

Delimiter
CR+LF(0DH 0AH)• Response message from the slave in normal status
HeaderSlave
Functionaddresscode(3AH) (30H 31H) (30H 36H)
Data item
Data[0005H][0000H](30H 30H 30H 35H) (30H 30H 30H 30H)

• Response message from the slave in exception status (during setting mode by keypad)
The function code MSB is set to 1 for the response message in exception (error) status,and 86H (38H 36H) is returned.
The exception code 12H (31H 32H: During setting mode by keypad) is returned.
Exception
HeaderSlave
FunctionError check
Delimitercode
address
code
LRC
CR+LF
[12H]
(3AH) (30H 31H) (38H 36H)
(36H 37H)(0DH 0AH)(31H 32H)

28

Setting (Slave address 1, 100% value)• A request message from the master [When setting 100% value to 1000
HeaderSlave
Functionaddresscode(3AH) (30H 31H) (30H 36H)

2

Data item
Data[0006H][03E8H](30H 30H 30H 36H) (30H 33H 45H 38H)

(03E8H)]

Error check
LRC(30H 38H)

Delimiter
CR+LF(0DH 0AH)

Error check
LRC(30H 38H)

Delimiter
CR+LF(0DH 0AH)• Response message from the slave in normal status
HeaderSlave
Functionaddresscode(3AH) (30H 31H) (30H 36H)
Data item
Data[0006H][03E8H](30H 30H 30H 36H) (30H 33H 45H 38H)

• Response message from the slave in exception (error) status (Value out of the setting
range)
The function code MSB is set to 1 for the response message in exception (error) status,and 86H (38H 36H) is returned.
The exception code 03H (30H 33H: Value out of the setting range) is returned.
Exception
HeaderSlave
FunctionError check
Delimitercode
address
code
LRC
CR+LF
[03H]
(3AH) (30H 31H) (38H 36H)
(37H 36H)(0DH 0AH)(30H 33H)
Reading (Slave address 1, input value)• A request message from the master
The number of data means the data items to be read, and it is fixed as 1 (30H 30H
30H 31H).
HeaderSlave
Functionaddresscode(3AH) (30H 31H) (30H 33H)

3

Data item
Number of data
[0080H][0001H](30H 30H 38H 30H) (30H 30H 30H 31H)

Error check
LRC(37H 42H)

Delimiter
CR+LF(0DH 0AH)• Response message from the slave in normal status [500 (01F4H)]
The number of response bytes means the number of bytes of the data which has
been read, and it is fixed as 2 (30H 32H).
Number of
HeaderSlave
Function
response byte
addresscode[02H](3AH) (30H 31H) (30H 33H)
(30H 32H)
Data[01F4H](30H 31H 46H 34H)

29

Error check
LRC(30H 35H)

Delimiter
CR+LF(0DH 0AH)

• Response message from the slave in exception (error) status (Data item is mistaken)
The function code MSB is set to 1 for the response message in exception (error) status,and 83H (38H 33H) is returned.
The exception code 02H (30H 32H: Non-existent data address) is returned.
Header(3AH)

Slave
Functionaddresscode(30H 31H) (38H 33H)

Exception
code
[02H]
(30H 32H)

Error check
LRC(37H 41H)

Delimiter
CR+LF(0DH 0AH)

Reading (Slave address 1, 100% value)• A request message from the master
The number of data means the data items to be read, and it is fixed as 1 (30H 30H
30H 31H).
HeaderSlave
Functionaddresscode(3AH) (30H 31H) (30H 33H)

4

Data item
Number of data
[0006H][0001H](30H 30H 30H 36H) (30H 30H 30H 31H)

Error check
LRC(46H 35H)

Delimiter
CR+LF(0DH 0AH)• Response message from the slave in normal status [When 100% value is set to 1000
(03E8H)]The number of response bytes means the number of bytes of the data which has
been read, and it is fixed as 2 (30H 32H).
Number of
HeaderSlave
Function
response byte
addresscode[02H](3AH) (30H 31H) (30H 33H)
(30H 32H)
Data[03E8H](30H 33H 45H 38H)

Error check
LRC(30H 46H)

Delimiter
CR+LF(0DH 0AH)

Setting (Slave address 1, Output MV) (for RAO)
• A request message from the master[When setting the Output MV to 5000 (50.00%) (1388H)]
HeaderSlave
Functionaddresscode(3AH) (30H 31H) (30H 36H)

5

Data item
Data[000EH][1388H](30H 30H 30H 45H) (31H 33H 38H 38H)

Error check
LRC(35H 30H)

Delimiter
CR+LF(0DH 0AH)

Error check
LRC(35H 30H)

Delimiter
CR+LF(0DH 0AH)• Response message from the slave in normal status
HeaderSlave
Functionaddresscode(3AH) (30H 31H) (30H 36H)
Data item
Data[000EH][1388H](30H 30H 30H 45H) (31H 33H 38H 38H)
30

8.3.3 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)
Data interval : 3.5 characters transmission time or lessTo transmit continuously, an interval between characters which consistof one message, must be within 3.5 character transmission times.
(1) Message configuration
RTU mode is configured to start after idle time is processed for more than 3.5 charactertransmission and end after idle time is processed for more than 3.5 charactertransmission.
3.5 idle
3.5 idle
Slave
FunctionError checkDatacharacters address
characters
Code
CRC-16
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 address in the response message.
Slave address 0 (00H, broadcast address) can identify all the slaves. However slaves
do not respond.
Function code
The function code is the command code for the slave to undertake the following action types
Function code
Contents
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 code below is set to the data of the
response message and returned to the master in order to inform it of what kind oferror has occurred.
Exception code
Contents
1 (01H)
Illegal function (Non-existent function)
2 (02H)
Illegal data address (Non-existent data address)
3 (03H)
Illegal data value (Value out of the setting range)
17 (11H)
Illegal setting (Status unable to be set)18 (12H)
Illegal setting (During setting mode by keypad operation)

31

Data
Data differs depending on the function code.
A request message from the master side is composed of data item, number of data andsetting data. (Refer to “8.4 Communication command table”.)
A response message from the slave side is composed of number of bytes, data andexception code in negative acknowledgement.
Only one piece of data can be dealt with per message. Therefore the number of data for
RTU mode is fixed as (0001H). The number of response byte is 02H.
Effective range of data is –32768 to 32767 (8000H to 7FFFH).
Error check: 16 bit data to detect communication errors.
Refer to “(2) Error check of RTU mode” below.
(2) Error check of RTU mode
After calculating CRC-16 (Cyclic Redundancy Check) from the slave address to theend of the data, the calculated 16-bit data is appended to the end of message insequence from low order to high order.
How to calculate CRC
In the CRC system, the information is divided by polynomial series. The remainder
is added to the end of the information and transmitted. The generation of polynomial
series is as follows.
(Generation of polynomial series: X16 + X 15 + X 2 + 1)
1 Initialize the CRC-16 data (assumed as X) (FFFFH).
2 Calculate exclusive OR (XOR) with the 1st data and X. This is assumed as X.
3 Shift X one bit to the right. This is assumed as X.
4 When a carry is generated as a result of the shift, XOR is calculated by X of 3 andthe fixed value (A001H). This is assumed as X.
If a carry is not generated, go to step 5 .
5 Repeat steps 3 and 4 until shifting 8 times.
6 XOR is calculated with the next data and X. This is assumed as X.
7 Repeat steps 3 to 5 .
8 Repeat steps 3 to 5 up to the last data.
9 Set X as CRC-16 to the end of message in sequence from low order to high order.
(3) Message example of RTU mode
1 Setting (Slave address 1, 0% value)• A request message from the master [(When setting 0% value to 0 (0000H))
Slave Function Data item Number
Error check3.5 idle
3.5 idle
address codeof data
CRC-16characterscharacters
(01H)
(06H)
(0005H) (0000H)(99CBH)• Response message from the slave in normal status
Slave Function Data item Number
3.5 idle
address codeof datacharacters
(01H)
(06H)
(0005H) (0000H)

Error check
CRC-16(99CBH)

3.5 idle
characters• Response message from the slave in exception (error) status (during setting modeby keypad operation)
The function code MSB is set to 1 for the response message in exception (error)
status, and 86H is returned.
The exception code (12H: During setting mode by keypad operation) is returned.
Slave Function Exception
Error check3.5 idle
3.5 idle
address code
code
CRC-16characterscharacters
(01H)
(86H)
(12H)
(C26DH)32

Setting (Slave address 1, 100% value)• A request message from the master [When setting 100% value to 1000 (03E8H)]
Slave Function Data item Number Error check3.5 idle
3.5 idle
address codeof data
CRC-16characterscharacters
(01H)
(06H)
(0006H) (03E8H)(6975H)2• Response message from the slave in normal status
Slave Function Data item Number
3.5 idle
address codeof datacharacters
(01H)
(06H)
(0006H) (03E8H)

Error check3.5 idle
CRC-16characters(6975H)• Response message from the slave in exception (error) status (Value out of the setting
range)
The function code MSB is set to 1 for the response message in exception (error) status,and 86H is returned.
The exception code (03H: Value out of the setting range) is returned.
Slave Function Exception
Error check3.5 idle
3.5 idle
address code
code
CRC-16characterscharacters
(01H)
(86H)
(03H)
(0261H)
Reading (Slave address 1, input value)• A request message from the master
The number of data means the data items to be read, and it is fixed as 1 (0001H).
Slave Function Data item Number Error check3.5 idle
3.5 idle
address codeof data
CRC-16characterscharacters
(01H)
(03H)
(0080H) (0001H)(85E2H)

3• Response message from the slave in normal status [500 (01F4H)]
The number of response bytes means the number of bytes of the data which has
been read, and it is fixed as 2 (02H).
Number of
Slave Function
Number Error check
response
3.5 idle
3.5 idle
address codeof data
CRC-16charactersbytecharacters
(01H)
(03H)
(01F4H)(B853H)(02H)• Response message from the slave in exception (error) status (When data item is
mistaken)
The function code MSB is set to 1 for the response message in exception (error)
status, and 83H is returned.
The exception code (02H: Non-existent data address) is returned.
Slave Function Exception
Error check3.5 idle
3.5 idle
CRC-16
address code
codecharacterscharacters(C0F1H)
(01H)
(83H)
(02H)

33

Reading (Slave address 1, 100% value)• A request message from the master
The number of data means the data items to be read, and it is fixed as 1 (0001H).
Slave Function Data item Number Error check3.5 idle
3.5 idle
address codeof data
CRC-16characterscharacters
(01H)
(03H)
(0006H) (0001H)(640BH)

4• Response message from the slave in normal status [When 100% value is set to 1000
(03E8H)]The number of response bytes means the number of bytes of the data which has
been read, and it is fixed as 2 (02H).
Number of
Slave Function
Number Error check3.5 idle
response
3.5 idle
address codeof data
CRC-16byte
characterscharacters
(01H)
(03H)
(03E8H)(B8FAH)(02H)
Setting (Slave address 1, Output MV) (for RAO)
• A request message from the master[When setting the Output MV to 5000 (50.00%) (1388H)]
Slave Function Data item Number Error check3.5 idle
address codeof data
CRC-16characters(01H)(06H) (000EH) (1388H)(E55FH)

5• Response message from the slave in normal status
Slave Function Data item Number
3.5 idle
address codeof datacharacters
(01H)
(06H)
(000EH) (1388H)
8.4 Communication command table[RAU, RAE, RAR, RAA, RAV, RAP]
ShinkoModbuscommandfunction
Data item
type
code
20H/50H
03H/06H 0001H Set value lock20H/50H

03H/06H

0002H Input type
(Available for
RAU)

20H/50H

03H/06H

0003H Input range[Available forRAU (TC input)
and RAE]

34

Error check
CRC-16(E55FH)

3.5 idle
characters

3.5 idle
characters

Data
0000H: Unlock
0001H: Lock
0000H: Thermocouple
0001H: RTD
0002H: DC current
0003H: DC voltage
0004H: Potentiometer
0000H: K -200 to 1370
0001H: K -200 to 200 (*1)
0002H: K 0 to 400 (*1)
0003H: J -200 to 1000
0004H: J -200 to 200 (*1)
0005H: J 0 to 400 (*1)
0006H: R -50 to 1760
0007H: S -50 to 1760
0008H: B 0 to 1820
0009H: E -200 to 800
000AH: T -200 to 400 (*1)
000BH: N -200 to 1300
000CH: PL- 0 to 1390
000DH: W5Re/W26Re 0 to 2315

Shinkocommandtype
20H/50H

Modbusfunctioncode
03H/06H

20H/50H

03H/06H

0003H Input range[Available forRAU (RTD input)
and RAR]

20H/50H

03H/06H

0003H Input range

Data item

Data

0003H Input range[Available forRAU (TC input)
and RAE]

000EH: W3Re/W25Re 0 to 2315
000FH: K -328 to 2498
0010H: K -328 to 392 (*1)
0011H: K -32 to 752 (*1)
0012H: J -328 to 1832
0013H: J -328 to 392 (*1)
0014H: J -32 to 752 (*1)
0015H: R -58 to 3200
0016H: S -58 to 3200
0017H: B 32 to 3308
0018H: E -328 to 1472
0019H: T -328 to 752 (*1)
001AH: N -328 to 2372
001BH: PL- 32 to 2534
001CH: W5Re/W26Re 32 to 4199
001DH: W3Re/W25Re 32 to 4199
0000H: Pt100 -200 to 850
0001H: Pt100 -100 to 100 (*1)
0002H: JPt100 -200 to 500
0003H: Pt100 -328 to 1562
0004H: Pt100 -148 to 212 (*1)
0005H: JPt100 -328 to 932
0000H: 4 to 20mA -1999 to 9999
0001H: 0 to 20mA -1999 to 9999
0002H: 0 to 16mA -1999 to 9999
0003H: 2 to 10mA -1999 to 9999
0004H: 0 to 10mA -1999 to 9999
0005H: 1 to 5mA -1999 to 9999
0006H: 0 to 1mA -1999 to 9999
0000H: 0 to 10mV -1999 to 9999
0001H: -10 to 10mV -1999 to 9999
0002H: 0 to 50mV -1999 to 9999
0003H: 0 to 60mV -1999 to 9999
0004H: 0 to 100mV -1999 to 9999
0005H: 0 to 1V -1999 to 9999
0006H: 0 to 5V -1999 to 9999
0007H: 1 to 5V -1999 to 9999
0008H: 0 to 10V -1999 to 9999
0000H: No decimal point
0001H: 1 digit after decimal point
0002H: 2-digit after decimal point
0003H: 3-digit after decimal pointSet value, Decimal point ignored
Set value, Decimal point ignored
Set value, Decimal point ignored[Available for RAU(DC current input)
and RAA]

20H/50H

03H/06H

0003H Input range[Available for RAU(DC voltage input)
and RAV]

20H/50H

03H/06H

0004H Decimal point
Place (*2)

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

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

0005H 0% value
0006H 100% value
0007H Filter time
constant
35

Shinkocommandtype
20H/50H
20H/50H

Modbusfunction
Data itemcode
03H/06H 0008H Sensor correction
03H/06H 000BH Burnout selection

20H/50H

03H/06H 000CH Display selection

20H/50H
50H

03H/06H 000DH Indication time
06H
0042H Potentiometer
input zeroadjustment (*3)
06H0043H Potentiometer
input span
adjustment (*3)
06H
0070H Key operation
change flagclearing
03H
0080H Input value
03H
0081H Input value

50H
50H
20H
20H
20H

03H

Data
Set value, Decimal point ignored
0000H: Upscale
0001H: Downscale
0000H: Input /Input % display
0001H: Input display
0002H: Input % display
0003H: No indication
Set value, Decimal point ignored
0000H: No action
0001H: Adjustment
0000H: No action
0001H: Adjustment
0000H: No action
0001H: All clearing
Input value, Decimal point ignored
Input value, Decimal point ignored
Fixed scale: 0 to 1000

0082H Unit status flag
0000 0000 0000 0000
20: Input burnout (Overrange)
0: Normal, 1: Overrange
1
2 : Input burnout (Underrange)
0: Normal, 1: Underrange
2 to 132: Not used, Always 0
214: Memory (EEPROM)
defective
0: Normal, 1: Defective
215: Change in key operation
0: No, 1: Yes

20H

20H

03H

03H

00A1H

Unit specification flag
0000 0000 0000 0000

00A3H Key operation
change item
reading (*4)
36

20: Model, Always 1
21: Model, Always 0
22 to 4: Unit input type
0: RAU
1: RAE
2: RAR
3: RAA
4: RAV
5: RAP
25: Communication function,
Always 1
26 to 15: Not used, Always 0
Data item code(*1): For data item 0004H (Decimal point place selection), “No decimal point” or“1 digit after decimal point” can be selected.
(*2): Selectable for RAU (DC current, DC voltage, potentiometer input), RAA, RAV and
RAP.
Selectable for RAU, RAE and RAR when (*1) is selected during Input range selection.
For thermocouple and RTD input, “No decimal point” or “1 digit after decimal point”
can be selected.
(*3): Adjustable for the RAU (potentiometer input) and RAP(*4): Data item 00A3H (Key operation change item reading):
Data items will be returned from the smallest one in sequence.
Once the changed item is read, the change flag for that item will be cleared.
[RAO]
Shinkocommandtype
20H/50H

Modbusfunctioncode
03H/06H

Data item

Data

0001H Set value lock20H/50H

03H/06H

0009H Output type

20H/50H

03H/06H

000CH Display selection

20H/50H
20H/50H

03H/06H
03H/06H

000DH Indication time
000EH Output MV

50H

06H

50H

06H

50H

06H

0040H Output zeroadjustment
0041H Output span
adjustment
0070H Key operation
change flagclearing

0000H: Unlock
0001H: Lock
0000H: 4 to 20mA
0001H: 0 to 20mA
0002H: 0 to 12mA
0003H: 0 to 10mA
0004H: 1 to 5mA
0005H: 0 to 1V
0006H: 0 to 5V
0007H: 1 to 5V
0008H: 0 to 10V
0000H: Reserve
0001H: Reserve
0002H: Output % display
0003H: No indication
Set value, Decimal point ignored
Set value, Decimal point ignored
0 to 10000 (0.00 to 100.00%)
Set value, Decimal point ignored37

Set value, Decimal point ignored
0000H: No action
0001H: All clearing

Shinkocommandtype
20H

Modbusfunctioncode
03H

Data item

Data

0082H Unit status flag
0000 0000 0000 0000
20: Not fixed
21: Not fixed
22 to 13: Not used, Always 0
214: Memory (EEPROM)
defective
0: Normal, 1: Defective
15
2 : Change in key operation
0: No, 1: Yes

20H

20H

03H

03H

00A1H

Unit specification flag
0000 0000 0000 0000

00A3H Key operation
change item
reading (*1)

20: Model, Always 0
21: Model, Always 1
22 to 4: Unit output type
Always 0
5
2 : Communication function,
Always 1
6 to 152: Not used, Always 0
Data item code(*1): Data item 00A3H (Key operation change item reading):
Data item will be returned from the smallest one in sequence.
Once the changed item is read, the change flag for that item will be cleared.
Data
Notes on the setting command and reading command• Convert the data (set value, decimal) to hexadecimal figures.
The negative number is represented by 2's complement.
• When connecting plural units, the address (instrument number) must not be duplicated.
Setting command• The settable range is the same as the one by keypad operation.
• When the data (set value) has a decimal point, the whole number without a decimal
point is used. The data (set value, decimal) is converted to hexadecimal figures.
• It’s possible to set the value by the setting command even if the set value is locked.
• The instrument number and communication speed of the slave cannot be set bycommunication function.
• When sending a command by Global address [95 (7FH)], the same command is sent to
all the slaves connected. However, the response is not returned.
• The memory can store up to 1,000,000 (one million) entries.
If the number of setting times exceeds the limit, it cannot memorize the data.
So frequent transmission via communication is not recommended.
Reading command• When the data (set value) has a decimal point, the response (hexadecimal figures) isreturned as a whole number without a decimal point.
38

Notes on programming monitoring software
How to speed up the scan time
When monitoring plural units of the RA series, set the program so that requisite minimum
pieces of data such as input value (0080H), current output MV (000EH) (RAO), unit status
flag (0082H), etc. can be read. For other data, set the program so that they can be read
only when their set value has changed. This will speed up the scan time.
How to read the set value change by the front keypad operation
If any set value is changed by the keypad operation, the unit sets the [Unit status flag
(0082H) 215: Change in key operation] to [Yes (1)].
There are 2 methods of reading the set value change by the front keypad as follows.
Reading method 1(1) On the software side, check that [Unit status flag (0082H) 215: Change in key
operation] has been set to [Yes (1)], then read all set values.
(2) Clear the [Unit status flag (0082H) 215: Change in key operation], by setting the [Keyoperation change flag clearing (0070H)] to [All clearing (0001H)].
If [Key operation change flag clearing (0070H)] is set to [All clearing (0001H)] during
the setting mode of the unit, Error code 5 (35H, Shinko protocol) or Exception Code 18(12H, Modbus protocol) will be returned as a negative acknowledgement. [Unit status
flag (0082H) 215: Change in key operation] cannot be cleared.
Set a program so that all set values can be read until acknowledgement is returned.
Reading method 2(1) On the software side, check that [Unit status flag (0082H) 215: Change in key
operation] has been set to [Yes (1)], then set the [Key operation change flag clearing(0070H)] to [All clearing (0001H)].
(2) Set the program depending on the acknowledgement or negative acknowledgement
as follows.
When acknowledgement is returned;
Consider it as settings completed, and read all set values.
When Error code 5 (35H, Shinko protocol) or Exception code 18 (12H, Modbus
protocol) is returned as a negative acknowledgement;
Consider it as during setting mode, and read the requisite minimum pieces of data suchas input value (0080H), current output MV (000EH) (RAO), unit status flag (0082H),
etc., then return to step (1).
Thus, programs which do not affect the scan time can be created using the methods
described above, even if set values on the monitoring software will not be updated until
settings are complete.
When communicating with a PLC
Command example (Shinko protocol) when communicating with a Mitsubishi PLC(FX series, etc.)• Reading (Top D register: D100)
Address 1, Input value reading
Sending Data
(STX)(!)( )( )(0)(0)(8)(0)(D)(7)(ETX)
Command
Register
Code
Header (STX)
02H
D100(LSB)
02H
Address1
D100(MSB)
21H
Sub address
20H
D101(LSB)
20H
Command type
20H
D101(MSB)
20H

39

Data item

&H80

Checksum
Delimiter (ETX)

03H

D102(LSB)
D102(MSB)
D103(LSB)
D103(MSB)
D104(LSB)
D104(MSB)
D105(LSB)

30H
30H
38H
30H
44H
37H
03H

Communication setting [MOVP H0C86 D8120]
Reading
1
2
3
4
5
6

[RS D100 K11 D106 K26]
[MOV H2102 D100][MOV H2020 D101][MOV H3030 D102][MOV H3038 D103][MOV H3744 D104][MOV H03 D105]• Setting (Top D register: D120)
Address 1, 100% value setting (When setting 100% value to 1000 [03E8H])
Sending Data
(STX)(!)( )(P)(0)(0)(0)(6)(0)(3)(E)(8)(C)(9)(ETX)
Command
Register
Code
Header (STX)
02H
D120(LSB)
02H
Address
1
D120(MSB)
21H
Sub address
20H
D121(LSB)
20H
Command typeP
D121(MSB)
50H
D122(LSB)
30H
D122(MSB)
30H
Data item&H6
D123(LSB)30H
D123(MSB)
36H
D124(LSB)
30H
D124(MSB)
33H
Data item
1000
D125(LSB)
45H
D125(MSB)
38H
D126(LSB)
43H
Checksum
D126(MSB)
39H
Delimiter (ETX)
03H
D127(LSB)
03H
Setting
1
2
3
4
5
6
7
8

[RS D120 K15 D128 K22]
[MOV H2102 D120][MOV H5020 D121][MOV H3030 D122][MOV H3630 D123][MOV H3330 D124][MOV H3845 D125][MOV H3943 D126][MOV H03 D127]40

9. Unit operation
9.1 Indication after power-on
After the power supply to the unit is turned on, the following warm-up status is indicated for 3
seconds (Fig. 9.1-1, 9.1-2).
[RAU, RAE, RAR, RAA, RAV, RAP]
Indicates the input range (Table 9.1-1, 9.1-2).
Indicates
for the RAU.
(Default: K, -200 to 1370 )Lights whenpower-on.

(Fig. 9.1-1)(Table 9.1-1)
Input
K
K
K
J
J
J
R
S
B
E
T
N
PLW5Re/W26Re
W3Re/W25Re
Pt100
Pt100
JPt1004 to 20mA DC
0 to 20mA DC
0 to 16mA DC
2 to 10mA DC
0 to 10mA DC
1 to 5mA DC
0 to 1mA DC

Input display: -200 to 1370
: -200 to 200: 0 to 400: -200 to 1000
: -200 to 200: 0 to 400: -50 to 1760
: -50 to 1760
: 0 to 1820
: -200 to 800: -200 to 400: -200 to 1300
: 0 to 1390
: 0 to 2315
: 0 to 2315
: -200 to 850: -100 to 100: -200 to 500: -1999 to 9999
: -1999 to 9999
: -1999 to 9999
: -1999 to 9999
: -1999 to 9999
: -1999 to 9999
: -1999 to 9999

41

: -328 to 2498
: -328 to 392: 32 to 752: -328 to 1832
: -328 to 392: 32 to 752: -58 to 3200
: -58 to 3200
: 32 to 3308
: -328 to 1472
: -328 to 752: -328 to 2372
: 32 to 2534
: 32 to 4199
: 32 to 4199
: -328 to 1562
: -148 to 212: -328 to 932

(Table 9.1-2)
Input
0 to 10mV DC-10 to 10mV DC
0 to 50mV DC
0 to 60mV DC
0 to 100mV DC
0 to 1V DC
0 to 5V DC
1 to 5V DC
0 to 10V DC

Input display: -1999 to 9999
: -1999 to 9999
: -1999 to 9999
: -1999 to 9999
: -1999 to 9999
: -1999 to 9999
: -1999 to 9999
: -1999 to 9999
: -1999 to 9999

[RAO]
Indicates the output type (Table 9.1-3).
Indicatesin the case of 4 to 20mA DC.
Lights whenpower-on.

(Fig. 9.1-2)(Table 9.1-3)
Output4 to 20mA DC
0 to 20mA DC
0 to 12mA DC
0 to 10mA DC
1 to 5mA DC
0 to 1V DC
0 to 5V DC
1 to 5V DC
0 to 10V DC

Output % display

429.2 Unit operation
After the warm-up indication, the unit switches to the Run mode as shown in (Fig. 9.2-1,
9.2-2).
[RAU, RAE, RAR, RAA, RAV, RAP]

Indicates the input value.
For the RAU (Default, K: -200 to1370 ), an input value from thethermocouple is indicated.
If nothing is connected to the input
terminals, then “” is indicated.

The input value is indicated in apercentage form (%).
(Fig. 9.2-1)• Indication when input value is -200.0 (-2000) or less
When the range has a decimal point: For the indication of -200.0 or less (up to -10% output
volume), the input value and the minus (-) sign are indicated alternately.
When DC current or voltage input is selected: The indication of -2000 or less is the sameas the above.
(e.g.) Indication of -200.0
IN
IN• Indication when input value is 10000 or more
When DC current or voltage input is selected: For the indication of 10000 or more (up to
110% output volume), the lower 4 digits of input value are flashing.
(e.g.) Indication of 10020
IN
Flashes.
• Underrange, Overrange and Sensor burnout indication
The following will be indicated regardless of the Display selection.
Underrange : "" flashes on the Input display.
Overrange : "" flashes on the Input display.

[RAO]

The output value is indicated in apercentage form (%).

(Fig. 9.2-2)
43

10. Adjustment
For the RAU (potentiometer input) and RAP, perform Potentiometer input zero andspan adjustment.
Connect a Dial resistor to the input terminals of this instrument.
For the RAO, perform Output zero and Output span adjustment.
Connect a digital multimeter to output terminals.
10.1 Basic operation of adjustment
Adjustment can be conducted in the Adjustment mode.
To enter the Adjustment mode, hold down the
key for approx. 3 seconds in the Run
mode. (Fig. 10.1-1)[RAU (potentiometer input), RAP]
Potentiometer input zero adjustment: The value is automatically adjusted with the
key.
Pressing the
key registers the value.
Potentiometer input span adjustment: The value is automatically adjusted with the
key.
Pressing the
key registers the value.
[RAO]
Output adjustment: Use theorkey, and register the value with the
key.
(Fig. 10.1-2)
To revert to the Run mode, hold down the

key again for approximately 3 seconds.

Adjustment mode operation example (RAO)(1) Run mode

To enter the Adjustment mode, holddown thekey for approx. 3
seconds in the Run mode.

(Fig. 10.1-1)(2) Adjustment mode

Please use thesekeys for adjustment.

To proceed to each adjustment item in
the Adjustment mode and to register
the adjusted value, please use this key.

(Fig. 10.1-2)
44

10.2 Adjustment
The following shows all adjusting items. For adjustment, refer to the explanation of each item below.
[RAU (potentiometer input), RAP]
DisplayName, Function, Setting range
Default value
Potentiometer
input
zero
adjustment-1999
IN
Performs potentiometer input zero adjustment.
Available for the RAU (potentiometer input) and RAP.
OUT

IN

OUT

[RAO]
DisplayIN

OUT

Set the potentiometer to the Minimum side, and press theAutomatically adjustment is performed.
Potentiometer input span adjustment 9999
Performs potentiometer input span adjustment.
Available for the RAU (potentiometer input) and RAP.

key once.

Set the potentiometer to the Maximum side, and press theAutomatically adjustment is performed.

key once.

Name, Function, Setting range
Default value
Output zero adjustment
0.00%
Adjusts output zero.
Input the 0% value, using the Output MV setting command (000EH), thenadjust the value with theor
key while viewing the output value on
the digital multimeter.
When the output range low limit is zero, (even if zero adjustment results ina negative value), output value will not be negative.
Setting range: -5.00 to 5.00%
Effective range of adjustment differs depending on the output types.
4 to 20mA DC -5 to 5%
0 to 20mA DC 0 to 5%
0 to 12mA DC 0 to 5%
0 to 10mA DC 0 to 5%
1 to 5mA DC -5 to 5%

IN

OUT

0 to 1V DC
0 to 5%0 to 5V DC
0 to 5%
1 to 5V DC-5 to 5%0 to 10V DC
0 to 5%
Output span adjustment
0.00%
Adjusts output span.
Input the 100% value, using the Output MV setting command (000EH),
then adjust the value with theor
key while viewing the output
value on the digital multimeter.
Setting range: -5.00 to 5.00%
Effective range of adjustment is 95 to 105%.

45

11. Specifications[RAU, RAE, RAR, RAA, RAV, RAP]
Input specifications
RAU (thermocouple), RAE
Input resistance: 1M or more
External resistance: 100 or less, However, B: 40 or less
Burnout: Upscale, Downscale
Input signal:
Thermocouple
Input range
K-200 to 1370
-328 to 2498
J-200 to 1000
-328 to 1832
R
-50 to 1760
-58 to 3200
S
-50 to 1760
-58 to 3200
B
0 to 1820
32 to 3308
E-200 to 800-328 to 1472
T
-200 to 400-328 to 752
N-200 to 1300
-328 to 2372
PL0 to 1390
32 to 2534
W5Re/W26Re
0 to 2315
32 to 4199
W3Re/W25Re
0 to 2315
32 to 4199
Minimum input span: 50 (100 )RAU [RTD (3-wire)], RAR
Input detection current: Approx. 0.2mA
Allowable lead wire resistance: 10 or less per wire
Burnout: Upscale, Downscale
Input signal:
RTD
Input range
Pt100-200 to 850-328 to 1562
JPt100-200 to 500-328 to 932
Minimum input span: 50 (100 )RAU (DC current), RAA
Input
4 to 20mA DC
0 to 20mA DC
0 to 16mA DC
2 to 10mA DC
0 to 10mA DC
1 to 5mA DC
0 to 1mA DC

Shunt resistor
50
100
200
1k

Connect shunt resistor (sold separately) between input terminals.
Name
Model
Specification
RES-S02-050
50
0.1%
RES-S02-100
100
0.1%
Shunt resistor
RES-S02-200
200
0.1%
RES-S02-01K
1k
0.1%

46

RAU (DC voltage), RAV
Input

Input resistance

0 to 10mV DC-10 to 10mV DC
0 to 50mV DC
0 to 60mV DC
0 to 100mV DC
0 to 1V DC
0 to 5V DC
1 to 5V DC
0 to 10V DC
RAU (potentiometer), RAP
Whole resistance value: 100
Reference voltage: 1.0V DC

Allowable signal
source resistance
20 or less40 or less200

or less

2k

or less

1k

or less

1M

to 10kPerformance
Conversion accuracy RAU (thermocouple input), RAE:
Within 0.1% of each input span
R, S input, -50 to 200 (-58 to 392 ): Within 6 (12 )B input, 0 to 300 (32 to 572 ): Accuracy is not guaranteed.
K, J, E, T, N input, 0 (32 ) or less: Within 0.4% of each
input span
RAU (RTD input), RAR: Within 0.1% of each input span
RAU (DC current input), RAA : Within 0.1%
RAU (DC voltage input), RAV : Within 0.1%
RAU (potentiometer input), RAP: Within 0.1%
Cold junction temperature compensation:
Within 1 at -5 to 55 [RAU (thermocouple input), RAE]
Display accuracy
Within Conversion accuracy 1 digit
Conversion time
250ms
Response time
0.5sec (typ.) (090%)
Temperature coefficient
0.015%/
Insulation resistance
Input - Communication - Power 10M or more, at 500V DC
Dielectric strength
Input - Communication - Power 2.0kV AC for 1 minute
General structure
Case
Flame-resistant resin, Color: Light gray
Panel
Membrane sheet
Communication Modular jackSetting
Setting by the front key
Indication
Input display: 7-segment Red LED display 4 digits
Character size, 7.4 x 4.0mm (H x W)
Input % display: 7-segment Green LED display 4digits
Character size, 7.4 x 4.0mm (H x W)
Power indicator: Green LED
Communication indicator : Yellow LED[RAO]
Output specifications
DC current
Allowable load Zero adjustment Span adjustment
Outputresistance
range
range
4 to 20mA DC 700 or less
-5 to 5%95 to 105%
0 to 20mA DC 700 or less0 to 5%95 to 105%
0 to 12mA DC 1.2k or less0 to 5%95 to 105%
0 to 10mA DC 1.2k or less0 to 5%95 to 105%
1 to 5mA DC
2.4k or less
-5 to 5%95 to 105%47

DC voltage
Output0 to 1V DC
0 to 5V DC
1 to 5V DC
0 to 10V DC

Allowable load Zero adjustment Span adjustment
resistance
range
range
100 or more
0 to 5%95 to 105%
500 or more
0 to 5%95 to 105%
500 or more
-5 to 5%95 to 105%
1k or more
0 to 5%95 to 105%

When the output range lower limit is zero, (even if zero adjustment
results in a negative value), output value will not be negative.
Performance
Conversion accuracy
Display accuracy
Response time
Temperature coefficientInsulation resistanceDielectric strength
General structure
Case
Front panel
Communication
Setting
Indication

Within 0.1%
Within Conversion accuracy 1 digit
0.5sec (typ.) (090%)
0.015%/
Output - Communication - Power 10M or more, at 500V DC
Output - Communication - Power 2.0kV AC for 1 minute
Flame-resistant resin, Color: Light gray
Membrane sheet
Modular jackSetting by the front key
Setting character display : 7-segment Red LED display 4 digits
Character size, 7.4 x 4.0mm (H x W)
Output % display: 7-segment Green LED display 4 digits
Character size, 7.4 x 4.0mm (H x W)
Power indicator: Green LED
Communication indicator: Yellow LED

Common specifications (RAU, RAE, RAR, RAA, RAV, RAP, RAO)
Communication
Cable length
Maximum 1.2km
Cable resistance: Within 50
Communication line
EIA RS-485
Communication method
Half-duplex communication
Synchronization method Start-stop synchronization
Communication protocol Shinko protocol, Modbus ASCII, Modbus RTU(Selectable by keypad)
Communication speed
2400, 4800, 9600, 19200bps (Selectable by keypad)
Code form
ASCII, binary
ParityEven, Odd, No parity (Selectable by keypad)
Stop bit
1, 2 (Selectable by keypad)
Error correction
Command request repeat system
Error detection
Parity check, Checksum (Shinko protocol)
LRC (Modbus ASCII), CRC-16 (Modbus RTU)
Data format
Data format differs depending on the communication protocol.
Communication Shinko
Modbus ASCII
Modbus RTU
protocolprotocolStart bit1
1
1
Data bit7
7 or 8
8
ParityYes (Even) Yes (Even, Odd) Yes (Even, Odd)
No parity
No parity
Stop bit1
1 or 2
1 or 248

Installation specifications
Power supply
100 to 240V AC 50/60Hz, 24V AC/DC 50/60Hz
Allowable voltage range 100 to 240V AC: 85 to 264V AC
24V AC/DC: 20 to 28V AC/DCPower consumption
Approx. 6VA
Ambient temperature-5 to 55 (23 to 131 )Ambient humidity
35 to 85%RH (Non-condensing)
WeightApprox. 120g
Mounting
DIN rail
External dimensions
W22.5 x H75 x D100mm
Attached functions• Power failure countermeasure
The setting data is backed up in the non-volatile IC memory.
• Self-diagnosis
The CPU is monitored by a watchdog timer, and when an abnormal status is found on
the CPU, the unit is switched to warm-up status.
• Cold junction compensation
Available only for the RAU (thermocouple input) and RAE.
This detects the temperature at the connecting terminal between the thermocouple and the
instrument, and always maintains the same status as if the reference junction is located at
0 (32 ).

12. Troubleshooting

If any malfunctions occur, refer to the following items after checking the power supply tothe master and slaves.
12.1 Indication
ProblemPresumed cause and solution
Input display is flashing• The sensor may be burnt out. Change each sensor.
""，or "".
• Check whether the sensor is securely connected to the input
terminals of the instrument.
Ensure that the sensor terminals are securely connected tothe input terminals of the instrument.
• Check the input signal source.
• Check whether polarity of thermocouple or compensating leadwire is correct.
Check whether codes (A, B, B) of the RTD agree with the
instrument terminals.
Ensure that they are wired properly.
The indication of the Input • Check whether the sensor input and temperature unit ( / )display is irregular or
setting are correct.
unstable.
Ensure that sensor type and temperature unit ( / ) are set
properly. (p.17, 18)• Check whether the sensor correction value is suitable.
Set it to a suitable value. (p.19)• AC leaks into the sensor circuit.
Use an ungrounded type sensor.
• There may be equipment that interferes with or makes noise
near the unit.
Keep equipment that interferes with or makes noise awayfrom the unit.
49

12.2 Key operation
ProblemPresumed cause and solution
Setting or adjustment is• “Lock” is selected during Set value lock selection.
impossible.
Select “Unlock”. (p.17)
For 0% and 100% value • 0% value and 100% value may be set at the point where
setting,thesetting
the value does not change.
indication does not change
Set them to suitable values. (p.19)
within the input range even
if theor
key ispressed, and new values
are unable to be set.
12.3 Unit operation
Problem
Input value does notchange.

No output

12.4 Communication
Problem
Communication failure

Although communication
is occurring, theresponse is 'NAK'.

Presumed cause and solution• The sensor may be out of order. Change the sensor.
• Check whether input and output wires are securely connectedto the I/O terminals of the unit.
Ensure that input and output wires are securely connected to
the I/O terminals of the unit.
• Check whether the wiring of input and output is correct.
• Check whether Output MV setting command (000EH) is
suitable.
Ensure that Output MV setting command (000EH) has been
set to a suitable value. (p.37)• Check whether a suitable output has been selected during
Output type selection. (p.20)

Presumed cause and solution• The connection or wiring of the communication cable is notsecure.
• Burnout or imperfect contact on the communication cable andthe connector. (p.11)• Communication speed of the slave does not coincide with thatof the master. (p.21)• The data bit, parity and stop bit of the master do not accord
with those of the slave. (p.21)• The instrument number of the slave does not coincide withthat of the command. (p.21)• The instrument numbers are duplicated in multiple slaves. (p.21)• Make sure that the program is appropriate for the transmission
timing (p.22)• Check that a non-existent command code has not been sent.
(p.34-38)• The setting command data exceeds the setting range of the slave.
• The unit is unable to be set in its current mode.
• The operation mode is under the front keypad operation
setting mode.
50

13. Character table
All setting items are indicated in the following tables, however, some items will not be
indicated depending on the specifications.
Setup mode
[RAU, RAE, RAR, RAA, RAV, RAP]
Display
Setting item
Default value
Data
Set value lock
UnlockInput type
Thermocouple (RAU)
Thermocouple input range
K -200 to 1370 (RAU, RAE)
RTD input range
Pt100 -200 to 850 (RAU, RAR)
4 to 20mA DC -1999 to 9999
DC current input range(RAU, RAA)
0 to 10mV DC -1999 to 9999 (RAU)
DC voltage input range
1 to 5V DC -1999 to 9999 (RAV)
Decimal point place
No decimal point
RAU, RAE, RAR: -200
0% value
RAA, RAV, RAP: -1999
RAU, RAE: 1370
RAR: 850
100% value
RAA, RAV, RAP: 9999
Filter time constant0.0secSensor correction
0.0
Burnout selection
UpscaleDisplay selection
Input/Input % display
Indication time
00.00 (Continuous)[RAO]
Display

Setting item
Set value lock
Output type
Display selection
Indication time

Default value
Unlock4 to 20mA DC
Output % display
00.00 (Continuous)

Communication parameter setting mode
Display
Setting item
Default value
Communication protocol
Shinko protocol
Instrument number
0Communication speed
9600bpsParityEven
Stop bit1
Adjustment mode
[RAU (Potentiometer input), RAP]
Display
Setting item
Potentiometer input zero adjustment -1999
Potentiometer input span adjustment 9999
[RAO]
Display

Setting item
Output zero adjustment
Output span adjustment

0.00%
0.00%
51

Data

Data

Default value

Data

Default valueData***** Inquiry *****For any inquiries about this unit, please contact our agency or thevendor where you purchased the unit after checking the following.
[Example]• Model --------------------------- RA –• Serial number ----------------- No.xxxxxx
In addition to the above, please let us know the details of themalfunction, if any, and the operating conditions.

SHINKO TECHNOS CO.,LTD.
OVERSEAS DIVISION

Reg. Office : 2-5-1, Senbahigashi, Minoo, Osaka, JapanURL: http://www.shinko-technos.co.jp
Tel : 81-72-727-6100
E-mail: overseas@shinko-technos.co.jp
Fax: 81-72-727-7006
No.RA1E2 2009.05