RKC INSTRUMENT RB100, RB400, RB900 Communication Quick Manual

Digital Temperature Controller

A

RB100/RB400/RB900

ll Rights Reserved, Copyright  2008, RKC INSTRUMENT INC.

Thank you for purchasing this RKC product. In order to achieve maximum performance
and ensure proper operation of your new instrument, carefully read all the instructions in
this manual. Please place this manual in a convenient location for easy reference.

This manual describes the connection method with host computer, communication

Communication
Quick Manual

IMR02C14-E1

parameters and communication data (except for parameters in engineering mode) of the
RB100/RB400/RB900.

For detailed host communication such as protocol description, see the Communication
Instruction Manual (IMR02C16-E).

The Communication Instruction Manual can be downloaded from our website:

URL: http://www.rkcinst.com/english/manual_load.htm

1. CONNECTION TO HOST COMPUTER

To prevent electric shock or instrument failure, turn off the power before
connecting or disconnecting the instrument and peripheral equipment.

Make sure that lugs or unshielded cables of the communication terminals are
not touched to the screw heads, lugs, or unshielded cables of the power
supply terminals to prevent electric shock or instrument failure. Use additional
care when two lugs are screwed to one communication terminal.

The cable must be provided by the customer.

1.1 Communication terminal number and signal details

Terminal No. Signal name Symbol

13 Signal ground SG
14 Send/Receive data T/R (A)
15 Send/Receive data T/R (B)

1.2 Wiring method

 When the interface of host computer (Master) is RS-485

Controller (Slave)

SG

(−)

(+)

Controller (Slave)

(−)

(+)

 When the host computer (Master) has a USB connector

Connect the USB communication converter between the host computer and the controller.

Controller (Slave)

(−)

(+)

Controller (Slave)

(−)

(+)

13

T/R (A)

14

T/R (B)

15





SG

13

T/R (A)

14

T/R (B)

15

*R

SG

13

T/R (A)

14

T/R (B)

15





SG

13

T/R (A)

14

T/R (B)

15

*R

For the COM-K, see the COM-K Instruction Manual (IMR01Z01-E).

WARNING

!

Paired wire

RS-485

Shielded twisted

pair wire

Screw size: M3×7 (with 5.8×5.8 square washer)
Recommended tightening torque:

0.4 N･m (4 kgf･cm)
Recommended solderless terminals:
Manufactured by J.S.T MFG CO., LTD.
Circular terminal with isolation V1.25-MS3
(M3 screw, width 5.5 mm, hole diameter 3.2 mm)

*R: Termination resistors (Example: 120 Ω 1/2 W)

Maximum connections: Up to 31 instruments

Paired wire

RS-485

Shielded twisted

pair wire

Screw size: M3×7 (with 5.8×5.8 square was her)
Recommended tightening torque:

0.4 N･m (4 kgf･cm)
Recommended solderless terminals:
Manufactured by J.S.T MFG CO., LTD.
Circular terminal with isolation V1.25-MS3
(M3 screw, width 5.5 mm, hole diameter 3.2 mm)

*R: Termination resistors (Example: 120 Ω 1/2 W)

Maximum connections: Up to 31 instruments

Host computer (Master)

SG

T/R (A)

T/R (B)

*R

Host computer (Master)

(COM-K accessory)

SG

1

T/R (A)

2

T/R (B)

3

Unused

4

Unused

5

USB communication converter

COM-K (RKC product)

(−)

(+)

Connect to
USB port

USB cable

Connect to
USB connector
of COM-K

The termination
resistor is built
into the COM-K.

2. SETTING

To establish communication parameters between host computer and controller, it is
necessary to set the following parameters.

When all communication parameter settings have been completed, turn the power
off and then on to make the new set values take effect.

This instrument returns to the PV/SV monitor screen if no key operation is
performed for more than one minute

This section describes the parameters which must be set for communication. For
the mode/parameters transfer and data setting, see the RB100/RB400/RB900

Quick Operation Manual (IMR02C12-E) and RB100/RB400/RB900
Parameter List (IMR02C13-E).

 Description of each parameters (Engineering mode F60)

Symbol Name Data range Description

(F60.)

(CMPS)

(Add)

(bPS)

Data bit configuration:

Set

value

0 8 Without 1 6 7 Without 1
1 8 Without 2 7 7 Without 2
2 8 Even 1 8 7 Even 1
3 8 Even 2 9 7 Even 2
4 8 Odd 1 10 7 Odd 1
5 8 Odd 2

Interval time:

The interval time for the controller should be set to provide a time for host computer to
finish sending all data including stop bit and to switch the line to receive status for the host.
If the interval time between the two is too short, the controller may send data before the
host computer is ready to receive it. In this case, communication transmission cannot be
conducted correctly.

3. COMMUNICATION REQUIREMENTS

 Processing times during data send/receive

When the host computer is using either the polling or selecting procedure for
communication, the following processing times are required for controller to send data:

- Response wait time after controller sends BCC in polling procedure

- Response wait time after controller sends ACK or NAK in selecting procedure

RKC communication (Polling procedure)

Response send time after controller receives ENQ 60 ms max.
Response send time after controller receives ACK 60 ms ma x.
Response send time after controller receives NAK 60 ms max.
Response send time after controller sends BCC 52 ms max.

RKC communication (Selecting procedure)

Response send time after controller receives BCC 65 ms max.
Response wait time after controller sends ACK 52 ms max.
Response wait time after controller sends NAK 52 ms max.

Modbus

Read holding registers [03H]
Response send time after the slave receives the query message

Preset single register [06H]
Response send time after the slave receives the query message

Diagnostics (loopback test) [08H]
Response send time after the slave receives the query message

Function block
60

Communication
protocol

Device address
(Slave address)

Communication
speed

Data bit
configuration

(bIT)

Interval time 0 to 250 ms The interval time for the

(INT)

Data

Parity

bit

bit

This is the first parameter symbol of function block 60.

0: RKC communication
1: Modbus

0 to 99
(Modbus: 1 to 99)

0: 2400 bps
1: 4800 bps
2: 9600 bps
3: 19200 bps

See Data bit

configuration table

Stop

bit

communication

communication

Settable

RKC

Modbus

Use to select a protocol of
communication function.

Do not use the same device
address for more than one
instrument in multi-drop
connection.

Set the same communication
speed for both the controller
(slave) and the host
computer (master).

Set the same data bit
configuration for both the
controller (slave) and the host
computer (master).

controller should be set to
provide a time for host
computer to finish sending all
data including stop bit and to
switch the line to receive
status for the host.

Set

Data

value

bit

11 7 Odd 2

Response send time is time when interval time is set at 0 ms.

Procedure details Time

Procedure details Time

Procedure details Time

Parity

bit

Stop

bit

Settable

communication

communication

60 ms max.

65 ms max.

60 ms max.

Factory

set value

Depends
on model

code

0

(Modbus: 1)

3

0

10

RKC

 RS-485 send/receive timing (RKC communication)

RS-485 communication is conducted through two wires, therefore the transmission and
reception of data requires precise timing.

Polling procedure

Host

computer

Controller

a

: Response send time after the controller receives [ENQ] + Interval time
b: Response send time after the controller sends BCC
c: Response send time after the controller receives [ACK] + Interval time or
Response send time after the controller receives [NAK] + Interval tim

Selecting procedure

Host

computer

Controller

a: Re sponse send time after the controller receives BCC + Interval time
b: Re sponse wait time after the controller sends ACK or Response wait ti me after the controller sends NAK

Send data

(Possible/Impossible)

Sending status

Send data

(Possible/Impossible)

Sending status

Send data

(Possible/Impossible)

Sending status

Send data

(Possible/Impossible)

Sending status

Possible

Impossible

Possible

Impossible

Possible

Impossible

Possible

Impossible

N

E

E

- - - - -

N

O

Q

T

S

B

- - - - -

T

C

X

C

e

S

B

T

C

- - - - -

X

C

a

b

N

A

or

A

C

K

K

A

or

A

C

K

K

b

c a

To switch the host computer from transmission to reception, send data must be on
line.

The following processing times are required for the controller to process data.

- In Polling procedure, Response wait time after the controller sends BCC

- In Selecting procedure, Response wait time after the controller sends ACK or
NAK

 Fail-safe

A transmission error may occur with the transmission line disconnected, shorted or set to
the high-impedance state. In order to prevent the above error, it is recommended that the
fail-safe function be provided on the receiver side of the host computer. The fail-safe
function can prevent a framing error from its occurrence by making the receiver output
stable to the MARK (1) when the transmission line is in the high-impedance state.

 Data backup

The nonvolatile memory (EEPROM) for data backup has limitations on the number of
memory rewrite times (approx. 1,000,000 times). If set values are frequently changed
through communication, please select “Buffer mode” in the EEPROM mode (Identifier:
EB).

 Modbus data processing precautions

• The numeric range of data used in Modbus protocol is 0000H to FFFFH. Only the set
value within the setting range is effective.

FFFFH represents −1.

• Data with decimal point is treated as data without decimal point on the Modbus protocol.

• If data (holding register) exceeding the accessible address range is accessed, an error

response message is returned.

• Read data of unused item is a default value.

• Any attempt to write to an unused item is not processed as an error. Data cannot be

written into an unused item.

• If data range or address error occurs during data writing (Write Action), it is not
processed as an error. Normal data is written in data register but data with error is not
written; therefore, it is recommended to confirm data of changed items after the data
setting.

• An attribute of the item for functions which are not in the controller is RO (read only). If
read action to this item is performed, the read data will be "0." If write action to this item
is performed, no error message is indicated and no data is written.

• Commands should be sent at time intervals of 24 bits after the master receives the
response message.

4. COMMUNICATION DATA LIST

The communication data map shows data which can be used for communication between
the host computer and controller.

Explanation of data map items

• Modbus register address
HEX: Hexadecimal DEC: Decimal

• Attribute (A method of how communication data items are read or written when

viewed from the host computer is described)

RO: Read only data (Host computer
R/W: Read and Write data (Host computer

• Data

RKC communication

ASCII code data of 6 digits

Most significant
digit

….…...

Least significant
digit

←

Controller)

↔

Controller)

Modbus

16-bit data

……….……………………

Bit 15

Bit 0

 Communication data (RKC communication)

During polling/selecting mode, data transmission can be continuously made by ACK in the
following ranges:

• From “Measured value (PV) monitor” to “Manipulated output ON/OFF state monitor
[cool-side]”

• From “Model code” to “Integrated operating time monitor”

Name

Measured value (PV)
monitor

Current transformer 1
(CT1) input value
monitor

Current transformer 2
(CT2) input value
monitor

Event 1 state monitor AA RO

Event 2 state monitor AB RO

Burnout state monitor B1 RO

Error code ER RO

RUN/STOP transfer SR R/W

Set value 1 (SV1) S1 R/W Setting limiter (low) to Setting limiter (high) 0

Event 1 set value
(EV1)

Event 1 set value
(EV1) [high]

Event 2 set value
(EV2)

Event 2 set value
(EV2) [high]

Heater break alarm 1
(HBA1) set value

Heater break alarm 2
(HBA2) set value

Control loop break
alarm (LBA) time

LBA deadband (LBD) A6 R/W 0 to Input span 0

Autotuning (AT) G1 R/W

Unused G2 R/W Must be always “0”

Proportional band
[heat-side]

Integral time [heat-side] I1 R/W 1 to 3600 seconds (0: PD action) 240

Derivative time [heat-side] D 1 R /W 1 to 3 600 se conds (0: PI action) 60

Anti-reset windup
(ARW)

Proportional cycle
time [heat-side]

Proportional band
[cool-side]

Overlap/Deadband V1 R/W

Proportional cycle
time [cool-side]

PV bias PB R/W

Set lock level LK R/W 0 to 10

EEPROM mode EB R/W 0: Backup mode

EEPROM state EM RO 0: The content of the EEPROM does not coincide

Interlock release IR R/W To release the interlock, write “0 (zero).” 0

Event 1 delay timer TD R/W 0 to 600 seconds 0

Event 2 delay timer TG R/W Data can be written only in STOP mode. 0

RKC

Attri-

Iden-

bute

tifier

M1 RO Within input range

M2 RO 0.0 to 100.0 A 

M3 RO

A1 R/W Deviation action: −Input span to +Input span

− Input span to + Input span

A2 R/W

A3 R/W 0.0 to 100.0 A 0.0

A4 R/W

A5 R/W

P1 R/W

W1 R/W

T0 R/W 0 to 100 seconds

P2 R/W

T1 R/W 0 to 100 seconds

For input range, see “4. MODEL CODE” of

RB100/RB400/RB900 Installation Manual (IMR02C11-E).

0: Event 1 OFF
1: Event 1 ON

0: Event 2 OFF
1: Event 2 ON

0: OFF
1: ON (burnout)

1: Adjustment data error
2: Data back-up error
4: A/D conversion error (Including temperature
compensation error)

0: RUN
1: STOP

Input value or set value action:
Same as input range

(When event code U, X, Y or Z is selected.)

The data range is the same as “Event 1 set value
(EV1).”

The data range is the same as “Event 1 set value
(EV1) [high].”

0 to 7200 seconds (0: Unused)

0: PID cont rol
1: AT start

TC/RTD inputs:
1 (0.1) to Input span (Unit: °C [°F])

Voltage (V)/current (I) inputs:

0.1 to 100.0 % of Input span
0 (0.0): ON/OFF action

1 to 100 % of proportional band [heat-side]
(0: Integral action is always OFF)

(0: Setting below 1 second is possi ble for “Proportional
cycle time [heat-side]” in the engineer ing mode)

M: Relay contact output V: Voltage pulse output
T: Triac output D: Open collector output

1 to 1000 % of proportional band [heat-side]
(ON/OFF control of cool-side only is not possible)

TC/RTD inputs:

−10 (−10.0) to +10 (+10.0) °C [°F]
Voltage (V)/current (I) inputs:

−10.0 to +10.0 % of Input span

(0: Setting below 1 second is possi ble for “Proportional
cycle time [cool-side]” in the engine ering mode)

TC/RTD inputs:

−1999 (−199.9) to +9999 (+999.9) °C [°F]
Voltage (V)/current (I) inputs:

− Input span to + Input span

For details of set lock level, see “■Engineering Mode” of
RB100/RB400/RB 900 Parameter List (IMR02C13-E).
The set data lock function is effective only for the setting
performed by key operat ion. Locked items by set dat a lock
function can be changed via communication.

(Set values are store to the EEPROM when
set values are changed.)

1: Buffer mode
(Not set values are store to the EEPROM
when set values are changed.)

with that of the RAM.
1: The content of the EEPROM coincides with
that of the RAM.

Data range

Continued on the next page

Factory

set value













0

TC/RTD:

50 (50.0)

V/I: 5.0

TC/RTD:

50 (50.0)

V/I: 5.0

0.0

480

0

TC/RTD:

30 (30.0)

V/I: 3.0

100

M: 20

V, T, D: 2

100

0 (0.0)

M: 20

V, T, D: 2

0 (0.0)

0

0



Name

Manipulated output
value (MV1) monitor
[heat-side]

Manipulated output
value (MV2) monitor
[cool-side]

Manipulated output
ON/OFF state
monitor [heat-side]

Manipulated output
ON/OFF state
monitor [cool-side]

RKC
Iden­tifier

Attri-
bute

Data range

Factory

set value

O1 RO Within output limiter range 

O2 RO 

Q1 RO

0: Output OFF
1: Output ON

Q2 RO 



Model code ID RO Model code (character) [32-digit] 

ROM version monitor VR RO ROM version [8-digit] 

Comprehensive
event state

AJ RO

Least significant digit: Event 1 (EV1)
2nd digit: Event 2 (EV2)
3rd digit: Event 3 (EV3)
4th digit: Event 4 (EV4)
5th digit: Burnout
Most significant digit: Unused



Data 0: OFF 1: ON

Digital input (DI) state L1 RO

Least significant digit: DI1
2nd digit: DI2
3rd digit to Most significant digit: Unused



Data 0: OFF 1: ON

Output state monitor Q3 RO

Least significant digit: Output 1 (OUT1)
2nd digit: Output 2 (OUT2)
3rd digit: Digital output 1 (DO1)
4th digit: Digital output 2 (DO2)
5th digit: Digital output 3 (DO3)
Most significant digit: Digital output 4 (DO4)



Data 0: OFF 1: ON

Set value (SV) display
while the setting change
rate limiter is working

Remaining-time
monitor

Event 3 state monitor AC RO

Event 4 state monitor AD RO

Operation mode state
monitor

MS RO Setting limiter (low) to Setting limiter (high)

TR RO 00:00 to 99:59 (min : sec or hour : min)

0: Event 3 OFF
1: Event 3 ON

0: Event 4 OFF

L0 RO

1: Event 4 ON

Least significant digit: STOP
2nd digit: RUN
3rd digit: Manual (During RUN)
4th digit to Most significant digit: Unused











Data 0: OFF 1: ON

Actual SV selection
number

Auto (AUTO)/Manual
(MAN) transfer

Monitor selection
(no display)

Mode selection
(no display)

LZ RO 1 to 4

J1 R/W

SV number in Timer 3 and T imer 4 functions.

0: Auto (AUTO) mode
1: Manual (MAN) mode

LP R/W 0 to 15 (Decimal) *

Bit 0: Current transformer1 (
Bit 1: Current transformer 2 (
Bit 2: Manipulated output value (MV) monitor a
Bit 3: Remaining-time monitor
Bit 4 to Bit 7: Unused

a

MV monitors is not displayed with heat/cool

control type.

0: Display 1: No displa y

Data

LM R/W 0 to 255 (Decimal) *

Bit 0: Auto (AUTO)/Manual (MAN) transfer
Bit 1: Set data unlock/lock transfer a
Bit 2: Interlock release
Bit 3: Disable RUN/STOP key operation
Bit 4 to Bit 6: Unused
Bit 7: Displays F21 and after

a

Data 0: Display

1: No display

b

Data 0: Enable RUN/STOP key operation

1: Disable RUN/STOP key operation

c

Data 0: No display

1: Displays F21 and after

CT1

) input value monitor

CT2

) input value monitor

a

c

a

b



0

0

0

Set value 2 (SV2) S2 R/W Setting limiter (low) to Setting limiter (high) 0

Set value 3 (SV3) S3 R/W 0

Set value 4 (SV4) S4 R/W 0

SV selection ZB R/W 1 to 4

F01 block selection
(no display)

DA R/W

One of the 4 set values ca n be selected and used for
control.

0: Display
1: No display

1

1

Timer 1 TH R/W 00:01 to 99:59 (min : sec or hour : min) 00:01

Timer 2 TI R/W 00:01

Timer 3 TJ R/W 00:01

Timer 4 TK R/W 00:01

Timer function ZC R/W

0: Unused
1 to 4: Timer function 1 to Timer function 4

0

Repeat execution times RR R/W 0 to 9999 (9999: Infinite times) 0

F02 block selection
(no display)

Setting change rate
limiter (up)

Setting change rate
limiter (low)

F03 block selection
(no display)

* Set the bit data after converting it to decimal.

DK R/W

0: Display
1: No display

HH R/W 0 (0.0) to Input span (Unit:°C [°F])/unit time) 0 (0.0)

HL R/W 0 (0.0)

DL R/W

0: Display
1: No display

1

1

Name

Event 1 set value
(EV1’) [low]

Event 2 set value
(EV2’) [low]

Event 3 set value
(EV3)

Event 3 set value
(EV3) [high]

Event 3 set value
(EV3’) [low]

Event 4 set value
(EV4)

Event 4 set value
(EV4) [high]

Event 4 set value
(EV4’) [low]

F04 block selection
(no display)

Startup tuning (ST) ST R/W

F05 block selection
(no display)

RKC
Iden­tifier

Attri-
bute

Data range

BT R/W −Input span to +Input span

BU R/W

A7 R/W

BV R/W

A8 R/W

BW R/W

DM R/W

DN R/W

(When event code U, X, Y or Z is selected)

The data range is the same as “Event 1 set value
(EV1’) [low].”

The data range is the same as “Event 1 set value
(EV1).”

The data range is the same as “Event 1 set value
(EV1’) [high].”

The data range is the same as “Event 1 set value
(EV1’) [low].”

The data range is the same as “Event 1 set value
(EV1).”

The data range is the same as “Event 1 set value
(EV1’) [high].”

The data range is the same as “Event 1 set value
(EV1’) [low].”

0: Display
1: No display

0: ST unused 2: Execute always
1: Execute once

0: Display
1: No display

Factory

set value

TC/RTD:

−50 (−50.0)
V/I: −5.0

TC/RTD:

−50 (−50.0)
V/I: −5.0

TC/RTD:

50 (50.0)

V/I: 5.0

TC/RTD:

−50 (−50.0)
V/I: −5.0

TC/RTD:

50 (50.0)

V/I: 5.0

TC/RTD:

−50 (−50.0)
V/I: −5.0

0

0

0

Fine tuning setting CB R/W −3 to +3 (0: Unused) 0

F06 block selection
(no display)

F07 block selection
(no display)

Minimum ON/OFF
time of proportioning
cycle [heat-side]

Output limiter (high)
[Heat-side output
limiter (high)]

Output limiter (low)
[Cool-side output
limiter (high)]

Minimum ON/OFF
time of proportioning
cycle [cool-side]

F08 block selection
(no display)

DO R/W

DQ R/W

0: Display
1: No display

0: Display
1: No display

VI R/W 0 to 1000 ms 0

OH R/W PID control: Output limiter (low) to 105.0 %

Heat/Cool PID control: 0.0 to 105.0 %

OL R/W PID control*: -5.0 % to Output limiter (high)

* Output limiter (high) > Output limiter (low)

Heat/Cool PID control: 0.0 to 105.0 %

VJ R/W 0 to 1000 ms 0

DR R/W

0: Display
1: No display

0

0

105.0

PID control:

−5.0

Heat/Cool

PID control:

105.0

0

PV digital filter F1 R/W 0 to 100 seconds (0: Unused) 0

F09 block selection
(no display)

Manual manipulated
output value (MV)

F10 block selection
(no display)

Holding peak value
ambient temperature
monitor

Integrated operating
time monitor

For communication data (Engineering mode), see the Communication Instruction Manual

(IMR02C16-E).

DS R/W

ON R/W

DT R/W

0: Display
1: No display

PID control:
Output limiter (low) to Output limiter (high)

Heat/Cool PID control:

− Cool-side output limiter (high) to + Heat-side
output limiter (high)

0: Display
1: No display

HP RO −10 to +100 °C 

UT RO 0 to 9999 hours 

0

0.0

1

 Communication data (Modbus)

Name

Measured value (PV)
monitor

Current transformer 1
(CT1) input value monitor

Current transformer 2
(CT2) input value monitor

Event 1 state monitor 3 3 RO

Event 2 state monitor 4 4 RO

Burnout state monitor 5 5 RO

Set value 1 (SV1) 6 6 R/W

Event 1 set value (EV1) 7 7 R/W

Event 1 set value (EV1)
[high]

Event 2 set value (EV2) 8 8 R/W

Event 2 set value (EV2)
[high]

Heater break alarm 1
(HBA1) set value

Heater break alarm 2
(HBA2) set value

Control loop break alarm
(LBA) time

LBA deadband (LBD) C 12 R/W

Autotuning (AT) D 13 R/W
Unused E 14   

Modbus

register address

HEX DEC

Attri-
bute

0 0 RO

1 1 RO

2 2 RO

9 9 R/W

A 10 R/W

B 11 R/W

Data range

For data range and factory set value, see

■ Communication data (RKC communication).

Factory

value

Modbus

Name

register address

HEX DEC

Proportional band
[heat-side]

F 15 R/W

Integral time [heat-side] 10 16 R/W

Derivative time [heat-side] 11 17 R/W

Anti-reset windup (ARW) 12 18 R/W

Proportional cycle time
[heat-side]

Proportional band
[cool-side]

13 19 R/W

14 20 R/W

Overlap/Deadband 15 21 R/W

Proportional cycle time
[cool-side]

16 22 R/W

PV bias 17 23 R/W

Set lock level 18 24 R/W

RUN/STOP transfer 19 25 R/W

Unused 1A 26   

EEPROM mode

EEPROM state

Manipulated output value
(MV1) monitor [heat-side]

Manipulated output value
(MV2) monitor [cool-side]

Unused

Manipulated output
ON/OFF state monitor
[heat-side]

Manipulated output
ON/OFF state monitor
[cool-side]

Comprehensive event
state

1B 27 R/W

1C 28 RO

1D 29 RO

1E 30 RO

1F

.

.
.

2C

2D 45 RO

2E 46 RO

2F 47 RO

Digital input (DI) state 30 48 RO

Output state monitor 31 49 RO

Set value (SV) display
while the setting change
rate limiter is working

32 50 RO

Remaining-time monitor 33 51 RO

Event 3 state monitor 34 52 RO

Event 4 state monitor 35 53 RO

Error code 36 54 RO

set

Operation mode state
monitor

Actual SV selection
number

Auto (AUTO)/
Manual (MAN) transfer

37 55 RO

38 56 RO

39 57 R/W

Interlock release 3A 58 R/W

Monitor selection
(no display)

3B 59 R/W

Attri­bute

For data range and factory set value, see

■ Communication data (RKC communication).

For data range and factory set value, see

■ Communication data (RKC communication).

31

  

.

.
.

44

For data range and factory set value, see

■ Communication data (RKC communication).

Bit data
Bit 0: Event 1 (EV1)

Bit 1: Event 2 (EV2)
Bit 2: Event 3 (EV3)
Bit 3: Event 4 (EV4)
Bit 4: Burnout
Bit 5 to Bit 15: Unused

Data range

Data 0: OFF 1: ON

[Decimal number: 0 to 31]

Bit data
Bit 0: DI1

Bit 1: DI2
Bit 2 to Bit 15: Unused

Data 0: OFF 1: ON

[Decimal number: 0 to 3]

Bit data
Bit 0: Output 1 (OUT1)

Bit 1: Output 2 (OUT2)
Bit 2: Digital output 1 (DO1)
Bit 3: Digital output 2 (DO2)
Bit 4: Digital output 3 (DO3)
Bit 5: Digital output 4 (DO4)
Bit 6 to Bit 15: Unused

Data 0: OFF 1: ON

[Decimal number: 0 to 63]

For data range and factory set value, see

■ Communication data (RKC communication).

Bit data
Bit 0: Adjustment data error

Bit 1: Data back-up error
Bit 2: A/D conversion error (Including
temperature compensation error)
Bit 3 to Bit 15: Unused

Data 0: OFF 1: ON

[Decimal number: 0 to 7]

Bit data
Bit 0: STOP

Bit 1: RUN
Bit 2: Manual (During RUN)
Bit 3 to Bit 15: Unused

Data 0: OFF 1: ON

[Decimal number: 0 to 7]

For data range and factory set value, see

■ Communication data (RKC communication).

Bit data
Bit 0: Current transformer1 (CT1) input value monitor

Bit 1: Current transformer2 (CT2) input value monitor
Bit 2: Manipulated output value (MV) monitor
Bit 3:

Remaining-time monitor

Bit 4 to Bit 15

: Unused

a

MV monitors is not with displayed

heat/cool control type.

Data 0: Display
1: No display

[Decimal number: 0 to 15]

Factory

set

value

Name

Mode selection
(no display)

Modbus

register address

HEX DEC

Attri­bute

3C 60 R/W Bit data

Bit 0: Auto (AUTO)/Manual (MAN)
transfer a
Bit 1: Set data unlock/lock transfer a
Bit 2: Interlock release a
Bit 3: Disable RUN/STOP key
operation b
Bit 4 to Bit 6: Unused
Bit 7: Displays F21 and after
Bit 8 to Bit 15: Unused

a

Data 0: Display

1: No display

b

Data 0: Enable RUN/STOP key

operation
1: Disable RUN/ST OP ke y
operation

c

Data 0: No display

1: Displays F21 and after

Data range

c

[Decimal number: 0 to 255]

Set value 2 (SV2) 3D 61 R/W

Set value 3 (SV3) 3E 62 R/W

Set value 4 (SV4) 3F 63 R/W

SV selection 40 64 R/W

F01 block selection
(no display)

41 65 R/W

Timer 1 42 66 R/W

Timer 2 43 67 R/W

Timer 3 44 68 R/W

Timer 4 45 69 R/W

For data range and factory set value, see

■ Communication data (RKC communication).

1 to 5999 (sec or min)

Timer function 46 70 R/W

Repeat execution times 47 71 R/W

F02 block selection



(no display)

Setting change rate limiter
(up)

Setting change rate limiter
(low)

F03 block selection
(no display)

Event 1 set value (EV1’)
[low]



Event 2 set value (EV2’)
[low]

48 72 R/W

49 73 R/W

4A 74 R/W

4B 75 R/W

4C 76 R/W

4D 77 R/W

Event 3 set value (EV3) 4E 78 R/W

4F 79 R/W



Event 3 set value (EV3)
[high]

Event 3 set value (EV3’)
[low]

Event 4 set value (EV4) 50 80 R/W

Event 4 set value (EV4)
[high]

Event 4 set value (EV4’)
[low]

F04 block selection
(no display)

Startup tuning (ST) 53 83 R/W

F05 block selection
(no display)

51 81 R/W

52 82 R/W

54 84 R/W

For data range and factory set value, see

■ Communication data (RKC communication).

Fine tuning setting 55 85 R/W

F06 block selection
(no display)

F07 block selection



(no display)
Minimum ON/OFF time of

proportioning cycle
[heat-side]

Output limiter (high)
[Heat-side output limiter
(high)]

Output limiter (low)



[Cool-side output limiter
(high)]

Minimum ON/OFF time of
proportioning cycle
[cool-side]

F08 block selection
(no display)

56 86 R/W

57 87 R/W

58 88 R/W

59 89 R/W

5A 90 R/W

5B 91 R/W

5C 92 R/W

PV digital filter 5D 93 R/W

F09 block selection
(no display)

Manual manipulated
output value (MV)

F10 block selection

0

(no display)

a

For communication data (Engineering mode), see the Communication Instruction Manual

(IMR02C16-E).

Modbus is a registered trademark of Schneider Electric.
Company names and product names used i n this manual are the trademark s or registered
trademarks of the respective companies.

HEADQUARTERS: 16-6, KUGAHARA 5-CHOME, OHTA-KU TOKYO 146-8515 J APAN

5E 94 R/W

5F 95 R/W

60 96 R/W

RKC INSTRUMENT INC.

®

PHONE: [phone] ([phone]) E-mail: info@rkcins t.co.jp
FAX: [phone] ([phone]) APR. 2008

The first edition: APR. 2008 [IMQ00]

Factory

set

value

0

1

1

1

1