PLC INTERFACE UNIT

CIT-200
INSTRUCTION MANUALPREFACE
Thank you for the purchase of our PLC Interface Unit CIT-200.
This manual contains instructions for the mounting, functions, operations and notes when operating theCIT-200.
For confirmation of the model and specifications, please read this manual carefully before starting operation.

To prevent accidents arising from the misuse of this unit, please ensure the operator using it
receives this manual.

Notes• This instrument should be used according to the specifications described in the manual.
If it is not used according to the specifications, it may malfunction or cause fire.
• Be sure to follow the warnings, cautions and notices. If they are not followed, serious injury or malfunction
may occur.
• Do not apply a commercial power source to the sensor which is connected to the input terminal nor allow thepower source to come into contact with the sensor.
• Specifications of the CIT-200 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 us or the shop you purchased the unit.
• Any unauthorized transfer or copying of this document, in part or in whole, is prohibited.
• Shinko Technos Co., Ltd. is not liable for any damages or secondary damages incurred as a result ofusing this manual, including any indirect damages.

Safety precautions(Be sure to read these precautions before using our products.)
The safety precautions are classified into two categories: “Warning” and “Caution”.
Depending on circumstances, procedures indicated by

Caution may be linked to serious results

and so be sure to follow the directions for usage.

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

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

21. Installation precautions

Warning
Turn the power supplied to the instrument OFF before mounting.
Working or touching the terminal with the power switched ON may result in severe
injury or death due to Electric Shock.

CautionThis instrument is intended to be used under the following environmental conditions (IEC61010-1):
Overvoltage category , Pollution degree 2
Mount the unit in a place with:(1) A minimum of dust, and an absence of corrosive gases(2) No flammable, explosive gases(3) No mechanical vibrations or shocks(4) No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to122 ) that does notchange rapidly(5) An ambient non-condensing humidity of 35 to 85%RH(6) No large capacity electromagnetic switches or cables through which large current is flowing(7) No water, oil or chemicals or where the vapors of these substances can come into direct contact
with the unit

Note: Although the case of this instrument is made of flame resisting resin, do not install
this instrument near flammable material.
Avoid setting this instrument directly on flammable material.

32. Wiring precautions

Warning
Turn the power supplied to the instrument OFF before wiring or checking.
Working or touching the terminal with the power switched ON may result in severe
injury or death due to Electric Shock.

Caution• Do not leave wire chips in the instrument, because they could cause fire, malfunction or trouble.
• Use the solderless terminal with an insulation sleeve that fits to the M3 screw when wiring the CIT-200.
• The terminal block of the CIT-200 is designed to be wired from the left side. The lead wire must be
inserted from the left side of the terminal, and fastened with the terminal screw.
• Tighten the terminal screw with the specified torque.
If excessive force is applied to the screw when tightening, the screw or case may be damaged.

3. Running and maintenance precautions

Warning• Do not touch live terminals. It may cause electric shock or problems in operation.
• Turn the power supply to the instrument OFF before cleaning the module or retightening the screws.
Doing this work while the power is ON may result in severe injury or death due to electric shock.

4

CONTENTS
1. Overview
1.1 Overview of the CIT-200 ------------------------------------------------------------------------------------ 6
1.2 Units and structure when applying the CIT-200 to the C series ---------------------------------- 6
1.3 System configuration ---------------------------------------------------------------------------------------- 7
1.4 Parameter exchange ----------------------------------------------------------------------------------------- 7

2. Model name
2.1 Model name ---------------------------------------------------------------------------------------------------- 8
2.2 How to read the model name label ----------------------------------------------------------------------- 8

3. Name and functions of the sections --------------------------------------------------- 8
4. Setup ------------------------------------------------------------------------------------------------------------ 9
5. Mounting
5.1 Site selection-------------------------------------------------------------------------------------------------- 11
5.2 External dimensions ---------------------------------------------------------------------------------------- 11
5.3 DIN rail mounting and removal --------------------------------------------------------------------------- 11

6. Wiring connection
6.1 Terminal arrangement -------------------------------------------------------------------------------------- 12
6.2 Communication interface ---------------------------------------------------------------------------------- 12
6.3 Wiring connection example ------------------------------------------------------------------------------- 13
6.3.1 Wiring between the CIT-200 and Mitsubishi Calculator link unit, Serial
communication unit ---------------------------------------------------------------------------------- 14
6.3.2 Wiring between the CIT-200 and Mitsubishi Micro PLC ------------------------------------ 14
6.3.3 Wiring between the CIT-200 and Omron Host link unit ------------------------------------- 15
6.3.4 Wiring between the CIT-200 and Fuji Interface module ------------------------------------- 16

7. Communication between the CIT-200 and Mitsubishi PLC
7.1 Setup7.1.1 Setup of Calculator link unit (AJ71UC24) ------------------------------------------------------- 17
7.1.2 Setup of Calculator link unit (A1SJ71UC24-R4) ---------------------------------------------- 18
7.1.3 Setup of Micro PLC (FX2N-XXMR) -------------------------------------------------------------- 18
7.1.4 Setup of Serial communication unit (QJ71C24) ----------------------------------------------- 19
7.2 Initial setting
7.2.1 Initial setting of Calculator link unit (AJ71UC24, A1SJ71UC24-R4) --------------------- 20
7.2.2 Initial setting of Micro PLC (FX2N-XXMR) ----------------------------------------------------- 21
7.2.3 Initial setting of Serial communication unit (QJ71C24) -------------------------------------- 22
7.3 Communication details-------------------------------------------------------------------------------------- 23

8. Communication between the CIT-200 and Omron PLC
8.1 Setup of Host link unit (C200H-LK202-V1) ----------------------------------------------------------- 34
8.2 Initial setting of Host link unit (C200H-LK202-V1) -------------------------------------------------- 34
8.3 Communication details ------------------------------------------------------------------------------------- 35

9. Communication between the CIT-200 and Fuji PLC
9.1 Setup of Interface module (NC1L-RS4) --------------------------------------------------------------- 41
9.2 Initial setting of Interface module (NC1L-RS4) ------------------------------------------------------ 42
9.3 Communication details ------------------------------------------------------------------------------------ 42

10. Specifications
10.1 Standard specifications ---------------------------------------------------------------------------------- 48
10.2 Optional specifications ----------------------------------------------------------------------------------- 49

11. Troubleshooting ------------------------------------------------------------------------------------ 50

5

1. Overview
1.1 Overview of the CIT-200
Communication between maximum 16 blocks of C series and PLC can be carried out
via PLC interface unit CIT-200.
The CIT-200 reads and writes the PV, SV or other data from/to the memory in the PLC via
a host link unit.
Therefore PLC only needs the program for reading and writing the data in the memory, andthis will reduce the communication processing of the PLC.

1.2 Units and structure when applying the CIT-200 to the C series(1) PLC interface unit: CIT-200
The CIT-200 makes it possible to communicate between multiple blocks (maximum 16 blocks) of C
series and the PLC.
(2) 2-Ch temperature control unit: CCT-235-2 /2-Ch temperature control unit
Two channels should have the same input and same output.
(3) Heating/Cooling temperature control unit: CCT-235- / , D
Temperature control unit
Heating/Cooling control is possible with 1-Ch input.
(4) Power source host link unit: CPT-20A
Link unit to supply the power to the CCT-235 and to communicate with the host unit.
(5) Base unit
CBT-210: Base unit for mounting the CPT-20A and CCT-235 unit.
One CPT-20A is required to 1 base unit.
Maximum 10 units of CCT-235 can be mounted.
CBT-205: Base unit for mounting the CPT-20A and CCT-235 unit.
One CPT-20A is required to 1 base unit.
Maximum 5 units of CCT-235 can be mounted.
(6) Communication cable: CPP
Exclusive communication cable to connect between the CIT-200 and CPT-20A or between CPT-20A
units (for block extension)6

1.3 System configuration
When using the CBT-210

RS-232Cor
RS-422A

CPU
unit
PLC

RS-422A
CIT-200

CPT-20A

RS-422A
Link unit
CPT-20A
RS-422A(Fig. 1.3-1)

When using the CBT-205

RS-232Cor
RS-422A

CPU
unit
PLC

RS-422A
CIT-200

CPT-20A

RS-422A
Link unit
CPT-20A
RS-422A(Fig. 1.3-2)

1.4 Parameter exchange
Parameter exchange is shown below.
The PLC sets and monitors the C series.
PLC
RS-232C
RS-422A
CIT-200
RS-422A

CPT-20A

CCT-235

The CIT-200 receives the data from the data memory in the PLC,
and sends the command data to the CPT-20A.
The CIT-200 receives the response data from the CPT-20A,
and sends it to the data memory in the PLC.
The CPT-20A receives the sending data from the CIT-200 andsends the data to the CCT-235.
The CPT-20A receives the response data from the CCT-235 andsends it to the CIT-200.
The CCT-235 receives the sending data from the CPT-20A, andperforms the control. The CCT-235 sends the control data to the
CPT-20A.

7

2. Model name
2.1 Model name

CIT-200: PLC interface unit

2.2 How to read the model name label

Warning
Turn the power supplied to the instrument OFF before confirming the model namelabel.
Working or touching the terminal with the power switched ON may result in severe
injury or death due to Electric Shock.
Model name labels are attached to the case and inner assembly.
[Example]
CIT-200
TC

Model name: CIT-200
Option: Terminal coverNo. x x x x x x

Instrument number (indicated only on the inner assembly.)

3. Name and functions of the sections
TX/RX

(4)
(3)

POWER

(1)
(2)
(5)

(6)

Terminal block
for power source

Internal
assembly

Terminal blockfor communication(Fig. 3-1)
(1) TX/RX: Communication indicator
When communicating between the CIT-200 and PLC, a yellow LED blinks.
(2) POWER: Instrument power indicator
When the power supply to the instrument is turned ON, a green LED lights.
(3) Modular jackConnects the CIT-200 to CPT-20A.
(4) Rotary switch for selecting a PLC type
Selects a PLC type to communicate with the CIT-200.
(5) DIP switch for communication setup
Selects the communication setup between the CIT-200 and PLC.
(6) DIP switch for selecting communication line
Selects the communication line (RS-422A or RS-232C) between the CIT-200 and PLC.
8

4. Setup
Warning
Turn the power supplied to the instrument OFF before setup.
Working or touching the terminal with the power switched ON may result in severe
injury or death due to Electric Shock.

NoticeSet up each switch of CIT-200 before the power supply to the unit is turned ON.
Set the same communication speed to both CIT-200 and the PLC, otherwise communication
is impossible.
Set the communication speed of the CPT-20A to 19200bps.

Switch setting
Using a small screwdriver (flat bladed or Phillips) or tweezers, set up the Rotary switch and
DIP switch of the CIT-200. See (Fig. 4-1).
TX/
RX
POWE
R

*(1)

*(2)

6

F0 1 2

3 4 5

E

1

7 8 9A
BCD

2

Terminal blockfor Power source

O
N

*(3)

Terminal blockfor communication

Internal
assembly

1
2
3
4
5
6
7
8

O
N

(Fig. 4-1)*(1) Rotary switch for selecting a PLC type
(Rotary switch number is represented by the hexadecimal figures.)
Do not set the Rotary switch number [6 to F] even if its setting range is from 0 to F.
Rotary
PLC and
SW No.
its manufacturer0
Mitsubishi MELSEC
1

Mitsubishi MELSEC

2
3

Omron C200H
Fuji MICREX-F70.

4Mitsubishi MELSEC

5

Mitsubishi MELSEC

Communicationcommand
ACPU common command“WR, WW” compatible
ACPU common command“WR, WW” compatible
RD/WR command

Communication
protocolHost link unit protocol(Protocol 4)
Host link unit protocol(Protocol 4)
Host link unit protocol
Host link unit protocol

ACPU common command“QR, QW” compatible
ACPU common command“QR, QW” compatible

Host link unit protocol(Protocol 4)
Host link unit protocol(Protocol 4)

6 to F
9

Using memory
R register
D registerDM
SI, W30
R register
D register

PLC manufacturer
Mitsubishi Electric Corp.
Omron Corp.
Fuji Electric Co., Ltd.

Model name
AJ71UC24, A1SJ71UC24-R2/R4, QJ71C24
LK201-V1, LK202-V1
NC1L-RS2, NC1L-RS4*(2) DIP switch for communication setup (Default value: OFF for all switches)
Select a switch to match with the specification of the PLC to be used.
Turn the DIP switch number [6 to 8] to OFF.
DIP SW No.
1
2
3
4
5
6 to 8Contents
Communication speed
Data length
ParityParityStop bitON
19200bps
7 bitsUsed
Odd
2 bitsOFF
9600bps
8 bitsNot used
Even
1 bit

*(3) DIP switch for selecting communication line (Default value: RS-422A)(Do not use the switch combination other than the below)
DIP switch
DIP switch
Communication line
No.1
No.2
ON
OFF
RS-422A
OFF
ON
RS-232C

The above switch setup items (1), (2) and (3) will be effective when the power supply is turned on(If any items are changed after the power is turned on, they will not be effective)
Setup of the CPT-20A
Set the DIP switch toas shown below except for No.2.
DIP SW No.
Contents
ON
OFF
1
Communication speed
19,200bps
9,600bps2
Terminator *Terminator Connected Terminator Not connected
3 to 6
Communication protocol
Shinko protocol

Note* When multiple CPT-20A units are connected, the last CPT-20A should be set to “Terminator
Connected”, and set other CPT-20A units to “Terminator Not connected”.
For more details, refer to Chapter “4. Setup” in the instruction manual for C series (pages 10 to 12).
Setup of each PLC
As to the PLC setup, refer to the Instruction manual for each PLC or the following.
• For setup of Mitsubishi PLC, see “7.1 Setup” (pp.17-19).
• For setup of Omron PLC, see “8.1 Setup” (p.34).
• For setup of Fuji PLC, see “9.1 Setup” (p.41).

10

5. Mounting
5.1 Site selection
This instrument is intended to be used under the following environmental conditions (IEC61010-1):
Overvoltage category , Pollution degree 2
Mount the unit in a place with:(1) A minimum of dust, and an absence of corrosive gases(2) No flammable, explosive gases(3) No mechanical vibrations or shocks(4) No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to122 ) that does notchange rapidly(5) An ambient non-condensing humidity of 35 to 85%RH(6) No large capacity electromagnetic switches or cables through which large current is flowing(7) No water, oil or chemicals or where the vapors of these substances can come into direct contact
with the unit

5.2 External dimensions

96

DIN rail

48

94

4

2

6

4

(Fig. 5.2-1)
5.3 DIN rail mounting and removal.
For the DIN rail mounting and removal, refer to “5.3 Mounting” in the Instruction manual for C series.

116. Wiring connection
6.1 Terminal arrangement

Warning
Turn the power supply to the instrument OFF before wiring.
Working with the power switched ON may result in severe injury or death due to Electric Shock.
Moreover, the instrument must be grounded before the power supply to the instrument
is turned on.

TX/RX

TX/RX

POWER

POWER

5

5

TX

6

6

RX

7

COM

8

TXA(-)

9

TXB(+)

7
8

CPT-20A

Communication
cable (CPP)
CIT-200

9
10

100 to 240V AC
50/60Hz

1

11

2

12

3

13

4

14

100 to 240V AC
50/60HzGroundTerminal block
for power source

10

RXA(-)

1

11

RXB(+)

2

12

COM

3

13

4

14

RS-232C

To the PLC
RS-422A

GroundTerminal blockfor digital
input/output

Terminal block
for power source

Terminal blockfor communication(Fig. 6.1-1)

6.2 Communication interface(1) RS-232C
Signal name
Sending data
Receiving data
Ground for the signal, or
common return cable
Cable length: Maximum 10m(2) RS-422A
Signal name
Sending data
Receiving data
Ground for the signal, or
common return cable
Cable length: Maximum 1km

Code
TX
RX

Signal direction
OutputInput

Terminal No.
5
6

COM

Code
TXA (-)TXB (+)RXA (-)RXB (+)

7

Signal direction
OutputInput

COM

Terminal No.
8
9
10
11
12

12

Terminator

Built-in6.3 Wiring connection example

Notices
Use the recommended cable to connect the PLC and CIT-200.
Use the recommended D sub connector to connect the PLC and CIT-200.
Use a thick wire (1.25 to 2.0mm2) as a grounding cable.
When the communication line is RS-422A, mount a terminator referring to the Instruction manual foreach PLC.
Solderless terminal
Use a solderless terminal with an isolation sleeve that fits to the M3 screw as shown below.
3.2mm

5.8mm or less

5.8mm or less

3.2mm

(Fig. 6.3-1)

Solderlessterminal
Y typeRound type

Manufacturer

Model name

Fastening torque

Nichifu Terminal Industries CO., LTD.
Japan Solderless Terminal MFG CO., LTD.
Nichifu Terminal Industries CO., LTD.
Japan Solderless Terminal MFG CO., LTD.

1.25-Y3
VD1.25-B3A
1.25-3
V1.25-3

0.6N･mMax. 1.0N･m

Recommended cable
Name
OTSC-2PVB-7/0.32TA
OTSC-3PVB-7/0.32TA

Manufacturer
ONAMBA CO., LTD.
ONAMBA CO., LTD.

Communication line
RS-232C
RS-422A

Recommended D sub connector
Model
Manufacturer
Japan Aviation Electronics Ind., Ltd.
DE-9SF-N
Japan Aviation Electronics Ind., Ltd.
DE-C1-J6
Japan Aviation Electronics Ind., Ltd.
DB-25PFT-N
Japan Aviation Electronics Ind., Ltd.
DB-C2-J9

13Name
D sub 9-pin () connector
D sub 9-pin connector coverD sub 25-pin () connector
D sub 25-pin connector cover6.3.1 Wiring between the CIT-200 and Mitsubishi Calculator link unit, Serial
communication unit
• RS-232C (AJ71UC24, A1SJ71UC24-R2, QJ71C24))
Cable length: Maximum 10m

Calculator link unit
(A1SJ71UC24-R2)
Serial communication unit
(QJ71C24)

Calculator link unit
CIT-200(AJ71UC24)

CIT-200
TX

5

SD

2

TX

5

RD

2

RX

6

RD

3

RX

6

SD

3

COM 7

SG

7

COM 7

SG

5

Twistedshield wire

GND 4

D sub 25-pin(凸) GND 4

Twistedshield wire

(Fig. 6.3.1-1)• RS-422A (AJ71UC24, A1SJ71UC24-R4, QJ71C24)
Cable length: Maximum 1km

Calculator link unit

CIT-200
TXA (-)8SDA

TXB (+)9SDB

RXA (-) 10

RDA

RXB (+) 11

RDB

COM

12

SG

GND

4

Twistedshield wire
(Fig. 6.3.1-2)

6.3.2 Wiring between the CIT-200 and Mitsubishi Micro PLC• RS-232C (FX2N-XXMR)
Cable length: Maximum 10m

CIT-200

Micro PLC
(FX2N-XXMR)

TX

5

RD

2

RX

6

SD

3

COM 7

SG

5

GND 4

Twistedshield wire

D sub 9-pin (凸)(Fig. 6.3.2-1)
14

D sub 9-pin(凸)• RS-422A (FX2N-XXMR)
Cable length: Maximum 1km

Micro PLC
(FX2N-XXMR)

CIT-200
TXA (-)8RDA

TXB (+)9RDB

RXA (-) 10

SDA

RXB (+) 11

SDB

COM

12

SG

GND

4

Twistedshield wire
(Fig. 6.3.2-2)

6.3.3 Wiring between the CIT-200 and Omron Host link unit
• RS-232C (C200H-LK201-V1)
Cable length: Maximum 10m

CIT-200

Host link unit
(C200H-LK201-V1)

TX

5

SD

2

RX

6

RD

3

COM 7

SG

7

Twistedshield wire

GND 4

D sub 25-pin (凸)(Fig. 6.3.3-1)• RS-422A (C200H-LK202-V1)
Cable length: Maximum 1km

CIT-200

Host link unit
(C200H-LK202-V1)

TXA (-)8

RDB 1

TXB (+)9

RDA 6

RXA (-) 10SDB

5RXB (+) 11

SDA

9

COM

12

SG

3

GND

4

Twistedshield wire

D sub 9-pin (凸)(Fig. 6.3.3-2)
15

6.3.4 Wiring between the CIT-200 and Fuji Interface module• RS-232C (NC1L-RS2)
Cable length: Maximum 10m

Interface module(NC1L-RS2)

CIT-200
TX

5

SD

2

RX

6

RD

3

COM 7

SG

7

Twistedshield wire

GND 4

D sub 25-pin (凸)(Fig. 6.3.4-1)• RS-422A (NC1L-RS4)
Cable length: Maximum 1km

Interface module(NC1L-RS4)

CIT-200
TXA (-)8RDA

TXB (+) 9

RDB

RXA (-) 10

SDA

RXB (+) 11

SDB

COM

12

SG

GND

4

Twisted shield wire
(Fig. 6.3.4-2)

16

7. Communication between the CIT-200 and
Mitsubishi PLC
7.1 Setup7.1.1 Setup of Calculator link unit (AJ71UC24)
(1)

MODE

STATION NO.

(2)

×10
STATION NO.

(3)

×1
SW11
SW12
SW13
SW14
SW15
SW16
SW17
SW18
SW21
SW22
SW23

ON

(1) Sets the transmission control procedure (protocol)and control procedure of RS-422A or RS-232C.
Set to 8 (Protocol 4).
(2) Sets the instrument number of the double digit (x10).
Set the number to 0.
(3) Sets the instrument number of the single digit (x1).
Set the number to 0.
(4) Sets the transmission specifications.
See (Table 7.1.1-1).
Set the items except for the baud rate to
.

(4)
ON

SW24

(Fig. 7.1.1-1)(Table 7.1.1-1)
Setting switch
SW11
SW12
SW13
SW14
SW15
SW16
SW17
SW18
SW21
SW22
SW23
SW24

Setting item
Main channel setting
Data bit setting
Baud rate
Transmission speed setting
Parity setting
Even/Odd parity setting
Stop bit setting
Checksum setting
Writing during RUN
Calculator link/multi-drop linkselection
Not used

17

Setting switch ON
RS-422A
8 bits
9600bps
ON
OFF
ON
Yes
Even
2 bitsYes
Possible

Setting switch OFF
RS-232C
7 bits
19200bps
OFF
ON
ON
No
Odd
1 bit
No
Impossible

Calculator link

Multi-drop link

7.1.2 Setup of Calculator link unit (A1SJ71UC24-R4)
SW01

ON

SW02
STATION NO.

SW03
SW04
SW05

(4)

x 10

(1)

x1

(2)

MODE

(3)

ON

SW06
SW07
SW08
SW09
SW10
SW11

(1) Sets the instrument number of the double digit (x10).
Set the number to 0.
(2) Sets the instrument number of the single digit (x1).
Set the number to 0.
(3) Sets the transmission control procedure (protocol)and control procedure of RS-422A or RS-232C.
Set to 8 (Protocol 4).
(4) Sets the transmission specifications.
See (Table 7.1.2-1).
Set the items except for the baud rate to.

SW12(Fig.7.1.2-1)(Table 7.1.2-1)
Setting switch
Setting item
SW01
Not used
Calculator link/Multi-drop link
SW02
selection
SW03
Not used
SW04
Writing during RUN
Baud rate
SW05
SW06
Transmission speed setting
SW07
SW08
Data bit setting
SW09
Parity setting
SW10
Even/Odd parity setting
SW11
Stop bit setting
SW12
Checksum setting

Setting switch ON

Setting switch OFF

Calculator link

Multi-drop link

Possible
9600bpsON
OFFON
8 bitsYes
Even
2 bitsYes

Impossible
19200bps
OFFONON
7 bits
No
Odd
1 bit
No

7.1.3 Setup of Micro PLC (FX2N-XXMR)
In the program, set up communication of no procedure, communication of calculator link(communication format D8120) which uses designated protocol and the station number (0).
• Specification of communication format D8120 (Set the items to
except for the baud rate.)(Table 7.1.3-1)
Contents
Bit No.
Name
0 (Bit OFF)1 (Bit ON)
b0
Data length
7 bits8 bitsb1
b2, b1
Parityb2( 1, 1): Evenb3
Stop bit
1 bit
2 bitsBaud rateb4
b7, b6, b5, b4(bps)
b5( 1, 0, 0, 0): 9600bps
Must be specified
b6( 1, 0, 0, 1): 19200bps
b7
b8
HeaderNo
Yesb9
Terminator
Not connected
Connected
b10b11, b10
Control cableb11( 0, 0): RS-485 interfaceb12
Not available
b13
Checksum
Not applied
Appliedb14
ProtocolNot used
Used
b15
Control procedure
Protocol 1
Protocol 4
18

Note
hCommunication format is used to decide the setting of the above (Table 7.1.3-1) andcan be set by programming to the special data memory (D8120) of the PLC.
hWhen the setting is changed, be sure to turn the power supply to the PLC OFF and thenON again, otherwise the changed data will not be effective.
How to set communication format (D8120)
When setting the contents of (Table 7.1.3-1), set the program to the special data memory (D8120) of
the PLC as follows.
• When the baud rate is 9600bps• When the baud rate is 19200bps
b15
b0
b15
b0
D8120 = [1110
0000
1000
0110 ]
D8120 = [1110
0000
1001
0110 ]
E
0
8
6
E
0
9
6
M8002

M8002
MOV HE086 D8120

MOV HE096 D8120(Fig. 7.1.3-1)(Fig. 7.1.3-2)

n How to set the station number (D8121)
Be sure to set the station number to “0”.
Set the program to the special data memory (D8121) of the PLC as follows.
M8002
MOV H0000 D8121(Fig. 7.1.3-3)

7.1.4 Setup of Serial communication unit (QJ71C24)
Install the GX Developer to a host computer, perform settings such as communication speed,transmission specification and communication protocol, then set up the unit with PC writing function.
• Setting from the GX Developer:(1) I/O allocation setting
Set the following items.
• Type: “Intelligent”• Model name: QJ71C24• Number of points: 32(2) Switch setting for I/O unit, Intelligent function unit
Set the following items.
• Transmission setting (Action setting: Independent, Data bit: 7, Parity: Yes (Even),
Stop bit: 1, Checksum code: Yes, Writing during RUN: Allowed,
Setting change: Allowed)• Communication speed setting (9600bps or 19200bps)• Communication protocol setting (Protocol 4)
For the setting method, refer to the User’s manual for Serial communication unit (Basic).

197.2. Initial setting
7.2.1 Initial setting of Calculator link unit (AJ71UC24, A1SJ71UC24-R4)
When communicating with the C series, set the address from the PLC to store each setting item dataof the C series after the power supply to the PLC is turned on. Communication is impossible if theaddresses for storing each setting item data of the C series are not set.
Set the program referring to the sample program (Fig. 7.2.1-1) below, and execute the first scan of it.

Note:
Be sure to leave file memory addresses (R0000 to R0002) of the PLC vacant since theaddresses (R0000 to R0002) are used to set the top address for the temperature control.
• Sample program

M9038
MOV K1000 R0000
MOV H000A R1000

(1)
(2)

MOV HAAAA R1001
MOV HAAAA R1002
MOV H00AA R1003(3)

MOV H0000 R1004
MOV HFFFF R1005(4)

MOV HFFFF R1006
MOV H1234 R0001

(5)
(6)
(7)

MOV H5678 R0002(8)

MOV H007F R1007

END(Fig. 7.2.1-1)
Explanation of the sample program
M9038 is a special relay which turns only 1 scan ON after running.
(1) To the R0000 address, set the top address (R1000) in the memory which is used for thecommunication with the CIT-200.
(2) To the address R1000, set the number of CPT-20A (10 units) connected to the CIT-200.
(3) To the address R1001 to R1004, set the number of CCT-235 (10 units) connected to the CPT-20A.
(4) To the address R1005, set the communication item Used/Not used selection flag.
See page 24 for the communication item.
(5) To the address R1006, set the communication item Used/Not used selection flag.
See page 24 for the communication item.
(6) To the address R1007, set the communication item Used/Not used selection flag.
See page 25 for the communication item.
(7) To the address R0001, set the fixed value 4660 (decimal).
(8) To the address R0002, set the fixed value 22136 (decimal).

20

7.2.2 Initial setting of Micro PLC (FX2N-XXMR)
When communicating with the C series, set the addresses from the PLC to store the setting
item data of the C series after the power supply to the PLC is turned on.
Communication is impossible if the addresses for storing the setting item data of the C series are not set.
Therefore, set the program referring to the sample program (Fig.7.2.2-1) below, and execute only the
first scan of it.

Note
Be sure to leave the file memory addresses (D0000 to D0002) of the PLC vacant when setting a
program since the addresses (D0000 to D0002) are used for the top address for thetemperature control.
• Sample program

M8002
MOV K1000

D0000

(1)

MOV H000A D1000(2)

MOV HAAAA D1001
MOV HAAAA D1002
MOV H00AA D1003(3)

MOV H0000 D1004
MOV HFFFF D1005(4)

MOV HFFFF D1006(5)

MOV H007F D1007(6)

MOV H1234 D0001(7)

MOV H5678 D0002(8)

MOV HE086 D8120(9)

MOV H0000 D8121

(10)

END

(Fig. 7.2.2-1)

Explanation of the sample program
M8002 is a special relay which turns only 1 scan ON after running.
(1) To the D0000 address, set the top address (D1000) in the memory area which is used for thecommunication with the CIT-200.
(2) To the address D1000, set the number of CPT-20A (10 units) connected to the CIT-200.
(3) To the address D1001 to D1004, set the number of CCT-235 (10 units) connected to the CPT-20A.
(4) To the address D1005, set the communication item Used/Not used selection flag.
See page 29 for the communication item.
(5) To the address D1006, set the communication item Used/Not used selection flag.
See page 29 for the communication item.
(6) To the address D1007, set the communication item Used/Not used selection flag.
See page 29 for the communication item.
(7) To the address D0001, set the fixed value 4660 (decimal).
(8) To the address D0002, set the fixed value 22136 (decimal).
(9) To the address D8120, set the communication format.
(10) To the address D8121, set the station number.
For more information, refer to the User’s manual (FX communication RS232C, RS485) for Mitsubishi
Micro PLC (MELSEC-F).
21

7.2.3 Initial setting of Serial communication unit (QJ71C24)
When communicating with the C series, set the address from the PLC to store each setting item dataof the C series after the power supply to the PLC is turned on. Communication is impossible if theaddresses for storing each setting item data of the C series are not set.
Set the program referring to the sample program (Fig. 7.2.3-1) below, and execute the first scan of it.

Note:
Be sure to leave file memory addresses (R0000 to R0002) of the PLC vacant since theaddresses (R0000 to R0002) are used to set the top address for the temperature control.
• Sample program (when using D register)SM403
MOV K1000 D0000(1)

MOV H000A D1000(2)

MOV HAAAA D1001
MOV HAAAA D1002
MOV H00AA D1003(3)

MOV H0000 D1004
MOV HFFFF D1005(4)

MOV HFFFF D1006(5)

MOV H007F D1007(6)

MOV H1234 D0001(7)

MOV H5678 D0002

(8)

END

(7.2.3-1)
Explanation of the sample program
SM403 is a special relay which turns only 1 scan ON after running.
(1) To the D0000 address, set the top address (D1000) in the memory area which is used for thecommunication with the CIT-200.
(2) To the address D1000, set the number of CPT-20A (10 units) connected to the CIT-200.
(3) To the address D1001 to D1004, set the number of CCT-235 (10 units) connected to the CPT-20A.
(4) To the address D1005, set the communication item Used/Not used selection flag.
See page 29 for the communication item.
(5) To the address D1006, set the communication item Used/Not used selection flag.
See page 29 for the communication item.
(6) To the address D1007, set the communication item Used/Not used selection flag.
See page 29 for the communication item.
(7) To the address D0001, set the fixed value 4660 (decimal).
(8) To the address D0002, set the fixed value 22136 (decimal).

22

7.3 Communication details
How to communicate between the CIT-200 and PLC
After the power to the PLC is turned on, the PLC sets address 0 in the memory to top address
to communicate with the CIT, and sets the number of CPT-20A connected to the CIT-200,
the number of the CCT-235 connected to the CPT-20A and communication items to the preset
addresses (top address to top address+19).
After that, The PLC sets address 1 to 4660 (decimal), and address 2 to 22136 (decimal).
After the power to the CIT-200 is turned on, the CIT-200 continues to read the PLC addresses (0 to 2).
After confirming that address 1 is 4660 (decimal) and address 2 is 22136 (decimal), the CIT-200
reads the data of the addresses (top address to top address+19) in address 0.

Note• Memory type is decided beforehand depending on the PLC selected by the Rotary switch. (pp. 9-10)
To address 0 of the predetermined memory, set the top address in the memory which is used forcommunications with the CIT-200.
• The CIT-200 directly reads from and writes to the data memory of the PLC, therefore the PLC does
not need to manage the communication procedure, and the program can be simplified.
• With writing to and reading from the PLC, the amount of data processed at a time is 20 channels
per item.
• Communication protocol is Format 4, word unit (command W).

PLC data memory configuration• Mitsubishi Calculator link unit (AJ71UC24, A1SJ71UC24-R4), and Serial communication unit
(QJ71C24)(e.g.)
Top address in the memory: R1000
The number of CPT-20A units connected to the CIT-200: 5
The number of CCT-235 units connected to the CPT-20A: 10
All communication items: Used
To the address R1000, 160 (lower 4-bit), set the number of CPT-20A units connected to the CIT-200.
To the addresses [R1001 to R1004], set the number of CCT-235 units connected to the CPT-20A.
To the addresses [R1005 to R1007], select the communication item Used or Not used.
To the address R1008, set the signal (setting value change flag) sending the setting value from the PLC
to the CCT-235.
The addresses [R1009 to R1019] are used for future extension.
To the address R1020 and those which follow it, set the necessary points of the communication items(from the main setting value in sequence) to the addresses. The communication items have been set
at the addresses [R1005 to R1007].
However, the communication items which have not been set at the addresses [R1005 to R1007] will not
be assigned to addresses.
Address
R0000
R0001
R0002

Contents
Sets top address in the memory used forcommunication.
Communication parameter setting
completion flag 1
Communication parameter setting
completion flag 2

23

Setting range, information
1000 (decimal)
Fixed value 4660 (decimal)
Fixed value 22136 (decimal)Address
R1000

R1001

R1002

R1003

R1004

R1005

R1006

Contents
Sets the number of CPT-20A units
connected to the CIT-200 to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 5 CPT-20A units are connected: 0005H
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 10 CCT-235 units are connected to
4 CPT-20A units (instrument No.0
to No.3): AAAAH
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 10 CCT-235 units are connected to
instrument No.4 CPT-20A unit: 000AH
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) CPT-20A is not connected: 0000H
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) CPT-20A is not connected: 0000H
Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

24

Setting range, information
160: The number of the CPT-20A
161: Ignored
162: Ignored
163: Ignored
Setting range: 1 to 10H
160: Instrument No. 0 CPT-20A
161: Instrument No. 1 CPT-20A
162: Instrument No. 2 CPT-20A
163: Instrument No. 3 CPT-20A
Setting range: 1 to AH
160: Instrument No. 4 CPT-20A
161: Instrument No. 5 CPT-20A
162: Instrument No. 6 CPT-20A
163: Instrument No. 7 CPT-20A
Setting range: 1 to AH
160: Instrument No. 8 CPT-20A
161: Instrument No. 9 CPT-20A
162: Instrument No. 10 CPT-20A
163: Instrument No. 11 CPT-20A
Setting range: 1 to AH
160: Instrument No. 12 CPT-20A
161: Instrument No. 13 CPT-20A
162: Instrument No. 14 CPT-20A
163: Instrument No. 15 CPT-20A
Setting range: 1 to AH
20 : Main setting value
21 : Main proportional band
22 : Integral time
23 : Derivative time
24 : Alarm 1 (high limit) setting
25 : Alarm 2 (low limit) setting
26 : Main proportional cycle
27 : Heater burnout alarm
28 : Control action Perform/Stop
29 : Auto-tuning Perform/Cancel
210: Alarm 1 (high limit) hysteresis
211: Alarm 2 (low limit) hysteresis
212: Control output ON/OFF action
hysteresis
213: Control output high limit
214: Control output low limit
215: PV (input) filter
20 : Temperature unit
21 : Control action (Heating/Cooling)
22 : Alarm 1 action
23 : Alarm 2 action
24 : Loop break alarm 1 action span
25 : Loop break alarm 1 action time
26 : Anti-reset windup
27 : PD (Manual) reset
28 : Sensor correction
29 : Loop break alarm 2 action span
210 : Loop break alarm 2 action time211: Cooling proportional band212: Cooling proportional cycle
213: Overlap band/Dead band
214: Cooling action mode
215: Cooling output ON/OFF action
hysteresis

R1007

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

R1008

Designates the setting value change flag.

R1009 to R1019
R1020 to R1119

For future extension
Main setting value (SV) setting

R1120 to R1219

Main proportional band setting

R1220 to R1319

Integral time setting

R1320 to R1419

Derivative time setting

R1420 to R1519

Alarm 1 (high limit) setting

R1520 to R1619

Alarm 2 (low limit) setting

R1620 to R1719

Main proportional cycle setting

R1720 to R1819

Heater burnout alarm setting

R1820 to R1919

Control action Perform/Stop

R1920 to R2019

Auto-tuning Perform/Cancel

25

20 : PV (input) reading
21 : MV (manipulated variable) reading
22 : Heater current (A) value reading
23 : Current status 1 reading
24 : Current status 2 reading
25 : Reading of Software version
information
26 : Instrument information reading
27 to 15: Ignored
0: No change
1: All setting items are changed.
2: Main setting value is changed.
3: Alarm 1, 2 and Heater burnout
alarm setting value are changed.
4: Main proportional band, Integral
time, Derivative time, Coolingproportional band, Overlap/Deadband setting value are changed.
5: Auto-tuning Perform/Cancel ischanged
6: Control action Perform/Stop ischanged.
7: Alarm 1, 2 action, Main proportional cycle, Cooling proportional cycle
are changed.
8: Control output high limit and low
limit are changed.
Main setting value from Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Main proportional band from Ch1 to
Ch100
Setting range: 0.0 to 100.0%
Integral time from Ch1 to Ch100
Setting range: 0 to 3600 seconds
Derivative time from Ch1 to Ch100
Setting range: 0 to 3600 seconds
Alarm 1 (high limit) setting value from
Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Alarm 2 (low limit) setting value from
Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Main proportional cycle from Ch1 to
Ch100
Setting range: 1 to 120 seconds
Heater burnout alarm value from Ch1
to Ch100
Setting range: 0.0 to 20.0A [W(20A)]
0.0 to 50.0A [W(50A)]
Control action Perform/Stop from
Ch1 to Ch100
0: Control Stop 1: Control Perform
Auto-tuning Perform/Cancel from
Ch1 to Ch100
0: AT Cancel 1: AT Perform

R2020 to R2119

Alarm 1 (high limit) hysteresis setting

R2120 to R2219

Alarm 2 (low limit) hysteresis setting

R2220 to R2319

Control output ON/OFF action hysteresis
setting

R2320 to R2419

Control output high limit setting

R2420 to R2519

Control output low limit setting

R2520 to R2619

PV (input) filter setting

R2620 to R2719

Temperature unit setting

R2720 to R2819

Control action setting

R2820 to R2919

Alarm 1 action selection

R2920 to R3019

Alarm 2 action selection

R3020 to R3119

Loop break alarm 1 action span setting

R3120 to R3219

Loop break alarm 1 action time setting

R3220 to R3319

Anti-reset windup setting

26

Alarm 1 (high limit) hysteresis from
Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Alarm 2 (low limit) hysteresis from
Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Control output ON/OFF action
hysteresis from Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Control output high limit value from
Ch1 to Ch100
Setting range: Control output low
limit value to 105%
Control output low limit value from
Ch1 to Ch100
Setting range: -5% to Control output
high limit value
PV (input) filter value from Ch1 to
Ch100
Setting range: 0.0 to 10.0 seconds
Temperature unit from Ch1 to Ch100
0:1:Control action from Ch1 to Ch100
0: Heating action 1: Cooling action
Alarm 1 action from Ch1 to Ch100
0: No alarm action
1: High limit alarm
2: High limit alarm with standby
3: Low limit alarm
4: Low limit alarm with standby
5: H/L limits alarm
6: H/L limits alarm with standby
7: H/L limit range alarm
8: H/L limit range alarm with standby
9: Process high alarm
10: Process high alarm with standby
11: Process low alarm
12: Process low alarm with standby
Alarm 2 action from Ch1 to Ch100
The selection items are the same as
those of Alarm 1 action
Loop break alarm 1 action span from
Ch1 to Ch100
Setting range:
0.0 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Loop break alarm 1 action time from
Ch1 to Ch100
Setting range: 200 minutes
Anti-reset windup from Ch1 to Ch100
Setting range: 0 to 100%

R3320 to R3419

PD (Manual) reset setting

R3420 to R3519

Sensor correction setting

R3520 to R3619

Loop break alarm 2 action span setting

R3620 to R3719

Loop break alarm 2 action time setting

R3720 to R3819

Cooling proportional band setting

R3820 to R3919

Cooling proportional cycle setting

R3920 to R4019

Overlap/Dead band setting

R4020 to R4119

Cooling action mode selection

R4120 to R4219

Cooling output ON/OFF action hysteresis
setting

R4220 to R4319
R4320 to R4419
R4420 to R4519

PV (input) reading
MV (Manipulated variable) reading
Heater current (ampere) value reading

R4520 to R4619

Current status 1 reading

R4620 to R4719

Current status 2 reading

R4720 to R4819

Software version information reading

R4820 to R4919

Instrument information reading

PD (Manual) reset value from Ch1 to
Ch100
Setting range: Proportional band
converted value, however, within
the range of -199.9 to 999.9
Sensor correction value from Ch1 to
Ch100
Setting range:-100.0 to 100.0 (Thermocouple,
RTD)-1000 to 1000 (DC current, voltage)
Loop break alarm 2 action span from
Ch1 to Ch100
Setting range:
0.0 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Loop break alarm 2 action time from
Ch1 to Ch100
Setting range: 200 minutes
Cooling proportional band from Ch1
to Ch100
Setting range: Multiplying factor to
Heating proportional band
0.0 to 10.0 (ON/OFF action when set
to 0.0)
Cooling proportional cycle from Ch1
to Ch100
Setting range: 1 to 120 seconds
Overlap/Dead band from Ch1 to
Ch100
Setting range: (Heating
proportional band converted value)
Cooling action mode from Ch1 to
Ch100
0: Air cooling (Linear characteristic)
1: Oil cooling (1.5th power of thelinear characteristic)
2: Water cooling (2nd power of thelinear characteristic)
Cooling output ON/OFF action
hysteresis from Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Reading of PV from Ch1 to Ch100
Reading of MV from Ch1 to Ch100
Reading of Heater current value from
Ch1 to Ch100
Reading of Current status 1 from
Ch1 to Ch100
Reading of Current status 2 from
Ch1 to Ch100
Reading of Software version
information from Ch1 to Ch100
Reading of Instrument informationfrom Ch1 to Ch100

Example 1: Set Ch1 main proportional band to data memory address R1120.
Example 2: Set Ch100 heater burnout alarm to data memory address R1819.

27

• Mitsubishi Micro PLC (FX2N-XXMR), Serial communication unit (QJ71C24)(e.g.) Top address in the memory: D1000
The number of CPT-20A units connected to the CIT-200: 5
The number of CCT-235 units connected to the CPT-20A: 10
All communication items: Used
To the address D1000, 160 (lower 4-bit), set the number of CPT-20A units connected to the CIT-200.
To the addresses [D1001 to D1004], set the number of CCT-235 units connected to the CPT-20A.
To the addresses [D1005 to D1007], select the communication item Used or Not used.
To the address D1008, set the signal (setting value change flag) sending the setting value from the PLC
to the CCT-235.
The addresses [D1009 to D1019] are used for the future extension.
To the address D1020 and those which follow it, set the necessary points of the communication items(from the main setting value) to the addresses in sequence. The communication items has been set atthe addresses [D1005 to D1007]
However, the communication items which have not been set at the addresses [D1005 to D1007] will not
be assigned to addresses.
Address
D0000
D0001
D0002

Address
D1000

D1001

D1002

D1003

D1004

Contents
Top address in the memory used forcommunications is set.
Communication parameter setting
completion flag 1
Communication parameter setting
completion flag 2

Setting range, information
1000 (decimal)

Contents
Sets the number of CPT-20A units
connected to the CIT-200 to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 5 CPT-20A units are connected: 0005H
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 10 CCT-235 units are connected to
4 CPT-20A units (instrument No.0
to No.3): AAAAH
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 10 CCT-235 units are connected to
instrument No.4 CPT-20A unit: 000AH
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) CPT-20A is not connected: 0000H
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) CPT-20A is not connected: 0000H

Setting range, information
160: The number of the CPT-20A
161: Ignored
162: Ignored
163: Ignored
Setting range: 1 to 10H
160: Instrument No. 0 CPT-20A
161: Instrument No. 1 CPT-20A
162: Instrument No. 2 CPT-20A
163: Instrument No. 3 CPT-20A
Setting range: 1 to AH

28

Fixed value 4660 (decimal)
Fixed value 22136 (decimal)

160: Instrument No. 4 CPT-20A
161: Instrument No. 5 CPT-20A
162: Instrument No. 6 CPT-20A
163: Instrument No. 7 CPT-20A
Setting range: 1 to AH
160: Instrument No. 8 CPT-20A
161: Instrument No. 9 CPT-20A
162: Instrument No. 10 CPT-20A
163: Instrument No. 11 CPT-20A
Setting range: 1 to AH
160: Instrument No. 12 CPT-20A
161: Instrument No. 13 CPT-20A
162: Instrument No. 14 CPT-20A
163: Instrument No. 15 CPT-20A
Setting range: 1 to AH

D1005

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

D1006

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

D1007

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

D1008

Designates the setting value change flag.

29

20 : Main setting value
21 : Main proportional band
22 : Integral time
23 : Derivative time
24 : Alarm 1 (high limit) setting
25 : Alarm 2 (low limit) setting
26 : Main proportional cycle
27 : Heater burnout alarm
28 : Control action Perform/Stop
29 : Auto-tuning Perform/Cancel
210: Alarm 1 (high limit) hysteresis
211: Alarm 2 (low limit) hysteresis
212: Control output ON/OFF action
hysteresis
213: Control output high limit
214: Control output low limit
215: PV (input) filter
20 : Temperature unit
21 : Control action (Heating/Cooling)
22 : Alarm 1 action
23 : Alarm 2 action
24 : Loop break alarm 1 action span
25 : Loop break alarm 1 action time
26 : Anti-reset windup
27 : PD (Manual) reset
28 : Sensor correction
29 : Loop break alarm 2 action span
210 : Loop break alarm 2 action time211: Cooling proportional band212: Cooling proportional cycle
213: Overlap band/Dead band
214: Cooling action mode
215: Cooling output ON/OFF action
hysteresis
20 : PV (input) reading
21 : MV reading
22 : Heater current (A) value reading
23 : Current status 1 reading
24 : Current status 2 reading
25 : Reading of Software version
information
26 : Instrument information reading
27 to 15: Ignored
0: No change
1: All setting items are changed.
2: Main setting value is changed.
3: Alarm 1, 2 and Heater burnout
alarm setting value are changed.
4: Main proportional band, Integral
time, Derivative time, Coolingproportional band, Overlap/Deadband setting value are changed.
5: Auto-tuning Perform/Cancel ischanged
6: Control action Perform/Stop ischanged.
7: Alarm 1, 2 action, Main proportional cycle, Cooling proportional cycle
are changed.
8: Control output high limit and low
limit are changed.

D1009 to D1019
D1020 to D1119

For future extension
Main setting value (SV) setting

D1120 to D1219

Main proportional band setting

D1220 to D1319

Integral time setting

D1320 to D1419

Derivative time setting

D1420 to D1519

Alarm 1 (high limit) setting

D1520 to D1619

Alarm 2 (low limit) setting

D1620 to D1719

Main proportional cycle setting

D1720 to D1819

Heater burnout alarm setting

D1820 to D1919

Control action Perform/Stop

D1920 to D2019

Auto-tuning Perform/Cancel

D2020 to D2119

Alarm 1 (high limit) hysteresis setting

D2120 to D2219

Alarm 2 (low limit) hysteresis setting

D2220 to D2319

Control output ON/OFF action hysteresis
setting

D2320 to D2419

Control output high limit setting

D2420 to D2519

Control output low limit setting

D2520 to D2619

PV (input) filter setting

30

Main setting value from Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Main proportional band from Ch1 to
Ch100
Setting range: 0.0 to 100.0%
Integral time from Ch1 to Ch100
Setting range: 0 to 3600 seconds
Derivative time from Ch1 to Ch100
Setting range: 0 to 3600 seconds
Alarm 1 (high limit) setting value from
Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Alarm 2 (low limit) setting value from
Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Main proportional cycle from Ch1 to
Ch100
Setting range: 1 to 120 seconds
Heater burnout alarm value from Ch1
to Ch100
Setting range: 0.0 to 20.0A [W(20A)]
0.0 to 50.0A [W(50A)]
Control action Perform/stop from
Ch1 to Ch100
0: Control stop 1: Control Perform
Auto-tuning Perform/Cancel from
Ch1 to Ch100
0: AT Cancel 1: AT Perform
Alarm 1 (high limit) hysteresis from
Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Alarm 2 (low limit) hysteresis from
Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Control output ON/OFF action
hysteresis from Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Control output high limit value from
Ch1 to Ch100
Setting range: Control output low
limit value to 105%
Control output low limit value from
Ch1 to Ch100
Setting range: -5% to Control output
high limit value
PV (input) filter value from Ch1 to
Ch100
Setting range: 0.0 to 10.0 seconds

D2620 to D2719

Temperature unit setting

D2720 to D2819

Control action setting

D2820 to D2919

Alarm 1 action selection

D2920 to D3019

Alarm 2 action selection

D3020 to D3119

Loop break alarm 1 action span setting

D3120 to D3219

Loop break alarm 1 action time setting

D3220 to D3319

Anti-reset windup setting

D3320 to D3419

PD (Manual) reset setting

D3420 to D3519

Sensor correction setting

D3520 to D3619

Loop break alarm 2 action span setting

D3620 to D3719

Loop break alarm 2 action time setting

D3720 to D3819

Cooling proportional band setting

D3820 to D3919

Cooling proportional cycle setting

31

Temperature unit from Ch1 to Ch100
0:1:Control action from Ch1 to Ch100
0: Heating action 1: Cooling action
Alarm 1 action from Ch1 to Ch100
0: No alarm action
1: High limit alarm
2: High limit alarm with standby
3: Low limit alarm
4: Low limit alarm with standby
5: H/L limits alarm
6: H/L limits alarm with standby
7: H/L limit range alarm
8: H/L limit range alarm with standby
9: Process high alarm
10: Process high alarm with standby
11: Process low alarm
12: Process low alarm with standby
Alarm 2 action from Ch1 to Ch100
The selection items are the same as
those of Alarm 1 action
Loop break alarm 1 action span from
Ch1 to Ch100
Setting range:
0.0 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Loop break alarm 1 action time from
Ch1 to Ch100
Setting range: 200 minutes
Anti-reset windup from Ch1 to Ch100
Setting range: 0 to 100%
PD (Manual) reset value from Ch1 to
Ch100
Setting range: Proportional band
converted value, however, within
the range of -199.9 to 999.9
Sensor correction value from Ch1 to
Ch100
Setting range:-100.0 to 100.0 (Thermocouple,
RTD)-1000 to 1000 (DC current, voltage)
Loop break alarm 2 action span from
Ch1 to Ch100
Setting range:
0.0 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Loop break alarm 2 action time from
Ch1 to Ch100
Setting range: 200 minutes
Cooling proportional band from Ch1
to Ch100
Setting range: Multiplying factor to
Heating proportional band
0.0 to 10.0 (ON/OFF action when set
to 0.0)
Cooling proportional cycle from Ch1
to Ch100
Setting range: 1 to 120 seconds

D3920 to D4019

Overlap/Dead band setting

Overlap/Dead band from Ch1 to
Ch100
Setting range: (Heating
proportional band converted value)
D4020 to D4119 Cooling action mode selection
Cooling action mode from Ch1 to
Ch100
0: Air cooling (Linear characteristic)
1: Oil cooling (1.5th power of thelinear characteristic)
2: Water cooling (2nd power of thelinear characteristic)
D4120 to D4219 Cooling output ON/OFF action hysteresis
Cooling output ON/OFF action
setting
hysteresis from Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
D4220 to D4319 PV (input) reading
Reading of PV from Ch1 to Ch100
D4320 to D4419 MV (Manipulated variable) reading
Reading of MV from Ch1 to Ch100
D4420 to D4519 Heater current (ampere) value reading
Reading of Heater current value from
Ch1 to Ch100
D4520 to D4619 Current status 1 reading
Reading of Current status 1 from
Ch1 to Ch100
D4620 to D4719 Current status 2 reading
Reading of Current status 2 from
Ch1 to Ch100
D4720 to D4819 Software version information reading
Reading of Software version
information from Ch1 to Ch100
D4820 to D4919 Instrument information reading
Reading of Instrument informationfrom Ch1 to Ch100
Example 1: Set Ch1 main proportional band to data memory address D1120.
Example 2: Set Ch100 heater burnout alarm to data memory address D1819.

32

Processing in the PLC• Setting value change flag setting
The following procedures show how to change setting values from the PLC. See (Fig.7.3-1).
(1) When changing the CCT-235 setting value, the PLC sets the setting value change flag from the following(1 to 8) items.
1. All setting values
2. Main setting value
3. Alarm 1, Alarm 2, Heater burnout alarm
4. Main proportional band, Integral time, Derivative time, Cooling proportional band, Overlap/Dead band
5. Auto-tuning
6. Control action (Perform/Stop)
7. Alarm 1 and Alarm 2 action selection, Main proportional cycle, Cooling proportional cycle
8. Control output high limit, low limit.
(2) After the CIT-200 reads the contents of the setting value change flag (3), the CIT-200 sets themto the CCT-235 via the CPT-20A (4).
(5) After that, the CIT-200 sets the value of the setting value change flag to “0”.
The setting data in the data memory should be set within the setting range of CCT-235 since theCIT-200 does not check the allowable setting range of the data.

PLC

CIT-200(1) Sets the setting valuechange flag to (1 to 8).

(2) Reads the setting
value change flag.
(3) Reads setting
values from the PLC.
(4) Sets the setting valuesof (3) to the CPT-20A.
(5) Writes the setting
value change flag to 0.

(6) The setting valuechange flag is set to 0.

CPT-20A

CCT-235

Sets the setting values
to each CCT-235.

Changes the setting
values.

(Fig. 7.3-1)• PV reading
After the CIT-200 reads PV from the CCT-235, the CIT-200 writes the PV to the PLC memory area where“PV (input) reading” is assigned.

NoticeThe CIT-200 can monitor the temperature of up to 16 blocks (320 points). However, if the CIT-200
reads or writes the number of data exceeding the PLC data memory capacity, communication errors
occur and it does not work normally.
Therefore, the number of data of the CIT-200 has to be within PLC data memory capacity.
For the PLC data memory capacity, refer to the Instruction manual for each PLC.

33

8. Communication between the CIT-200 andOmron PLC
8.1 Setup of Host link unit (C200H-LK202-V1)
LK202-V1
RUN
RCV

(1)

CH
XMT
ERROR

SW1

SW2

SW3

SW4

(3)

(2)

(5)

(6)

ON

(4)

OFF

The frontof the unit

The insideof the unit

(Fig. 8.1-1)(1) Sets the instrument number of the double digit (x10).
Set the number to 0.
(2) Sets the instrument number of the single digit (x1).
Set the number to 0.
(3) Sets the communication speed.
Set the communication speed to switch No.5 (9600bps) or No.6 (19200bps).
(4) Sets the command level, parity and transmission code.
Select the switch No.2 to set them.
(5) Sets the terminator Connected or Not connected.
Set the terminator to Connected (ON).
(6) Sets the procedure of 1:1 or 1:N.
Set to 1:N procedure (OFF).

8.2 Initial setting of Host link unit (C200H-LK202-V1)

When communicating with the C series, set the addresses from the PLC to store the setting
item data of the C series after the power supply to the PLC is turned on.
Communication is impossible if the addresses for storing the setting item data of the C series
are not set.
Set the program referring to the sample program (Fig.8.2-1) as follows.
(Execute only the first scan of the following sample program.)

Note

Leave file memory addresses (DM0000 to DM0002) of the PLC vacant when setting the program
since the addresses (DM0000 to DM0002) are used for the top address for the temperature control.

34• Sample program
25315
MOV
#03E8
DM0000MOV#000A
DM1000

(1)
(2)

MOV
#AAAA
DM1001MOV#AAAA
DM1002MOV#00AA
DM1003

(3)

MOV
#0000
DM1004MOV#FFFF
DM1005

(4)

MOV
#FFFF
DM1006

(5)

MOV
#007F
DM1007

(6)

MOV
#1234
DM0001

(7)

MOV
#5678
DM0002

Explanation of the Sample program(1) To the DM0000 address, set the top address (DM1000)in the memory area which is used for thecommunication with the CIT-200.
(2) To the address DM1000, set the number of CCT-235
units (10 units) connected with the CIT-200.
(3) To the addresses DM1001 to DM1004, set the number of
CCT-235 units (10 units) connected with the CPT-20A.
(4) To the address DM1005, set the communication item
Used/Not used selection flag.
See page 37 for the communication item.
(5) To address DM1006, set the communication item
Used/Not used selection flag.
See page 37 for the communication item.
(6) To address DM1007, set the communication item
Used/Not used selection flag.
See page 37 for the communication item.
(7) To the address DM0001, set the fixed value 4660
(decimal).
(8) To the address DM0002, set the fixed value 22136(decimal).

(8)

END

(Fig. 8.2-1)

8.3 Communication details
How to communicate between the CIT-200 and Host link unit (C200H-LK202-V1)
After the power to the PLC is turned on, the PLC sets address 0 in the memory area to top addressand sets the number of CPT-20A units connected to the CIT-200, the number of the CCT-235
units connected to the CPT-20A and communication items to the preset addresses (top address to top
address+19).
After that, The PLC sets address 1 to 4660 (decimal), and address 2 to 22136 (decimal).
After the power to the CIT-200 is turned on, the CIT-200 continues to read the PLC address (0 to 2).
After confirming that address 1 is 4660 (decimal) and address 2 is 22136 (decimal), the CIT-200 reads
the data of the addresses (top address to top address+19) in address 0.

Note• Memory type is decided beforehand depending on the PLC selected by the Rotary switch.
To the address 0 of the predetermined memory, set the top address in the memory area which isused for communications with the CIT-200.
• The CIT-200 directly reads from and writes to the data memory of the PLC, therefore the PLC
does not need to manage the communication procedure, and the program can be simplified.
• With writing to and reading from the PLC, the amount of data processed at a time is 20 channels
per item.
35

n PLC data memory configuration• Omron Host link unit (C200H-LK202-V1)(e.g.) Top address in the memory area: DM1000
The number of CPT-20A units connected to the CIT-200: 5
The number of CCT-235 units connected to the CPT-20A: 10
All communication items: Used
To the address DM1000, 160 (lower 4-bit), set the number of CPT-20A units connected to the CIT-200.
To the addresses [DM1001 to DM1004], set the number of CCT-235 units connected to the CPT-20A.
To the addresses [DM1005 to DM1007], select the communication item Used or Not used.
To the address DM1008, set the signal (setting value change flag) sending the value from the PLC to
CCT-235.
The addresses [DM1009 to DM1019] are used for the future extension.
To the address DM1020 and those which follow it, set the necessary points of the communication items(from the main setting value) to the addresses in sequence. The communication items have been set atthe addresses [DM1005 to DM1007]
However, the communication items which have not been set at the addresses [DM1005 to DM1007] will
not be assigned to addresses.
Address
DM0000DM0001DM0002

Address
DM1000DM1001DM1002

DM1003

DM1004

Contents
Top address in the memory used forcommunications is set.
Communication parameter setting
completion flag 1
Communication parameter setting
completion flag 2

Setting range, information
1000 (decimal)

Contents
Sets the number of CPT-20A units
connected to the CIT-200 to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 5 CPT-20A units are connected: 0005H
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 10 CCT-235 units are connected to
4 CPT-20A units (instrument No.0
to No.3): AAAAH
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 10 CCT-235 units are connected to
instrument No.4 CPT-20A unit: 000AH
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) The CPT-20A is not connected: 0000H
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) The CPT-20A is not connected: 0000H

Setting range, information
160: The number of the CPT-20A
161: Ignored
162: Ignored
163: Ignored
Setting range: 1 to 10H
160: Instrument No. 0 CPT-20A
161: Instrument No. 1 CPT-20A
162: Instrument No. 2 CPT-20A
163: Instrument No. 3 CPT-20A
Setting range: 1 to AH

36

Fixed value 4660 (decimal)
Fixed value 22136 (decimal)

160: Instrument No. 4 CPT-20A
161: Instrument No. 5 CPT-20A
162: Instrument No. 6 CPT-20A
163: Instrument No. 7 CPT-20A
Setting range: 1 to AH
160: Instrument No. 8 CPT-20A
161: Instrument No. 9 CPT-20A
162: Instrument No. 10 CPT-20A
163: Instrument No. 11 CPT-20A
Setting range: 1 to AH
160: Instrument No. 12 CPT-20A
161: Instrument No. 13 CPT-20A
162: Instrument No. 14 CPT-20A
163: Instrument No. 15 CPT-20A
Setting range: 1 to AH

DM1005

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

DM1006

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

DM1007

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

DM1008Designates the setting value change flag.

37

20 : Main setting value
21 : Main proportional band
22 : Integral time
23 : Derivative time
24 : Alarm 1 (high limit) setting
25 : Alarm 2 (low limit) setting
26 : Main proportional cycle
27 : Heater burnout alarm
28 : Control action Perform/Stop
29 : Auto-tuning Perform/Cancel
210: Alarm 1 (high limit) hysteresis
211: Alarm 2 (low limit) hysteresis
212: Control output ON/OFF action
hysteresis
213: Control output high limit
214: Control output low limit
215: PV (input) filter
20 : Temperature unit
21 : Control action (Heating/Cooling)
22 : Alarm 1 action
23 : Alarm 2 action
24 : Loop break alarm 1 action span
25 : Loop break alarm 1 action time
26 : Anti-reset windup
27 : PD (Manual) reset
28 : Sensor correction
29 : Loop break alarm 2 action span
210 : Loop break alarm 2 action time211: Cooling proportional band212: Cooling proportional cycle
213: Overlap band/Dead band
214: Cooling action mode
215: Cooling output ON/OFF action
hysteresis
20 : PV (input) reading
21 : MV reading
22 : Heater current (A) value reading
23 : Current status 1 reading
24 : Current status 2 reading
25 : Reading of Software version
information
26 : Instrument Information reading
27 to 15: Ignored
0: No change
1: All setting items are changed.
2: Main setting value is changed.
3: Alarm 1, 2 and Heater burnout
alarm setting value are changed.
4: Main proportional band, Integral
time, Derivative time, Coolingproportional band, Overlap/Deadband setting value are changed.
5: Auto-tuning Perform/Cancel ischanged
6: Control action Perform/Stop ischanged.
7: Alarm 1, 2 action, Main proportional cycle, Cooling proportional cycle
are changed.
8: Control output high limit and low
limit are changed.

DM1009 to
DM1019DM1020 to
DM1119For future extension

DM1120 to
DM1219Main proportional band setting

DM1220 to
DM1319DM1320 to
DM1419DM1420 to
DM1519Integral time setting

Main setting value (SV) setting

Derivative time setting
Alarm 1 (high limit) setting

DM1520 to
DM1619Alarm 2 (low limit) setting

DM1620 to
DM1719Main proportional cycle setting

DM1720 to
DM1819Heater burnout alarm setting

DM1820 to
DM1919Control action Perform/Stop

DM1920 to
DM2019Auto-tuning Perform/Cancel

DM2020 to
DM2119Alarm 1 (high limit) hysteresis setting

DM2120 to
DM2219Alarm 2 (low limit) hysteresis setting

DM2220 to
DM2319Control output ON/OFF action hysteresis
setting

DM2320 to
DM2419Control output high limit setting

DM2420 to
DM2519Control output low limit setting

38

Main setting value from Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Main proportional band from Ch1 to
Ch100
Setting range: 0.0 to 100.0%
Integral time from Ch1 to Ch100
Setting range: 0 to 3600 seconds
Derivative time from Ch1 to Ch100
Setting range: 0 to 3600 seconds
Alarm 1 (high limit) setting value from
Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Alarm 2 (low limit) setting value from
Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Main proportional cycle from Ch1 to
Ch100
Setting range: 1 to 120 seconds
Heater burnout alarm value from Ch1
to Ch100
Setting range: 0.0 to 20.0A [W(20A)]
0.0 to 50.0A [W(50A)]
Control action Perform/Stop from
Ch1 to Ch100
0: Control Stop 1: Control Perform
Auto-tuning Perform/Cancel from
Ch1 to Ch100
0: AT Cancel 1: AT Perform
Alarm 1 (high limit) hysteresis from
Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Alarm 2 (low limit) hysteresis from
Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Control output ON/OFF action
hysteresis from Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Control output high limit value from
Ch1 to Ch100
Setting range: Control output low
limit value to 105%
Control output low limit value from
Ch1 to Ch100
Setting range: -5% to Control output
high limit valueDM2520 toDM2619PV (input) filter setting

DM2620 to
DM2719DM2720 to
DM2819DM2820 to
DM2919Temperature unit setting

DM2920 toDM3019Alarm 2 action selection

DM3020 to
DM3119Loop break alarm 1 action span setting

DM3120 to
DM3219Loop break alarm 1 action time setting

DM3220 to
DM3319DM3320 to
DM3419Anti-reset windup setting

DM3420 to
DM3519Sensor correction setting

DM3520 to
DM3619Loop break alarm 2 action span setting

DM3620 to
DM3719Loop break alarm 2 action time setting

DM3720 to
DM3819Cooling proportional band setting

Control action setting
Alarm 1 action selection

PD (Manual) reset setting39

PV (input) filter value from Ch1 to
Ch100
Setting range: 0.0 to 10.0 seconds
Temperature unit from Ch1 to Ch100
1:0:Control action from Ch1 to Ch100
0: Heating action 1: Cooling action
Alarm 1 action from Ch1 to Ch100
0: No alarm action
1: High limit alarm
2: High limit alarm with standby
3: Low limit alarm
4: Low limit alarm with standby
5: H/L limits alarm
6: H/L limits alarm with standby
7: H/L limit range alarm
8: H/L limit range alarm with standby
9: Process high alarm
10: Process high alarm with standby
11: Process low alarm
12: Process low alarm with standby
Alarm 2 action from Ch1 to Ch100
The selection items are the same as
those of Alarm 1 action
Loop break alarm 1 action span from
Ch1 to Ch100
Setting range:
0.0 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Loop break alarm 1 action time from
Ch1 to Ch100
Setting range: 200 minutes
Anti-reset windup from Ch1 to Ch100
Setting range: 0 to 100%
PD (Manual) reset value from Ch1 to
Ch100
Setting range: Proportional band
converted value, however, within therange of -199.9 to 999.9
Sensor correction value from Ch1 to
Ch100
Setting range:-100.0 to 100.0 (Thermocouple,
RTD)-1000 to 1000 (DC current, voltage)
Loop break alarm 2 action span from
Ch1 to Ch100
Setting range:
0.0 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Loop break alarm 2 action time from
Ch1 to Ch100
Setting range: 200 minutes
Cooling proportional band from Ch1
to Ch100
Setting range: Multiplying factor to
Heating proportional band
0.0 to 10.0 (ON/OFF action when set
to 0.0)DM3820 toDM3919Cooling proportional cycle setting

DM3920 to
DM4019Overlap/Dead band setting

DM4020 toDM4119Cooling action mode selection

DM4120 to
DM4219Cooling output ON/OFF action hysteresis
setting

DM4220 to
DM4319DM4320 to
DM4419DM4420 to
DM4519DM4520 to
DM4619DM4620 to
DM4719DM4720 to
DM4819DM4820 to
DM4919PV (input) reading

Cooling proportional cycle from Ch1
to Ch100
Setting range: 1 to 120 seconds
Overlap/Dead band from Ch1 to
Ch100
Setting range: (Heating
proportional band converted value)
Cooling action mode from Ch1 to
Ch100
0: Air cooling (Linear characteristic)
1: Oil cooling (1.5th power of thelinear characteristic)
2: Water cooling (2nd power of thelinear characteristic)
Cooling output ON/OFF action
hysteresis from Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Reading of PV from Ch1 to Ch100

MV (Manipulated variable) reading

Reading of MV from Ch1 to Ch100

Heater current (ampere) value reading

Reading of Heater current value from
Ch1 to Ch100
Reading of Current status 1 from
Ch1 to Ch100
Reading of Current status 2 from
Ch1 to Ch100
Reading of Software version
information from Ch1 to Ch100
Reading of Instrument informationfrom Ch1 to Ch100

Current status 1 reading
Current status 2 reading
Software version information reading
Instrument information reading

Example 1: Set Ch1 main proportional band to data memory address DM1120.
Example 2: Set Ch100 heater burnout alarm to data memory address DM1819.
Processing in the PLC
For the processing in the PLC, see page 33.

40

9. Communication between the CIT-200 andFuji PLC
9.1 Setup of Interface module (NC1L-RS4)
O
N

RS4

(1)
X 10

ADDRESS

X1

SDA

(2)
(3)

SDB

(5)

1 2 3 4 5 6 78

RUN
SND
RCV
DVE

ON

RDA
RDB
SG

OFF
34 5
6

F0 1 2(4)

7 8 9AE

FG

The inside of the unit

BCD

The front of the unit

(Fig. 9.1-1)(1) Sets the instrument number of the double digit (x10).
Set the number to 0.
(2) Sets the instrument number of the single digit (x1).
Set the number to 0.
(3) Sets the transmission specifications, referring to (Table 9.1-1).
Set the baud rate to 9600bps or 19200bps.
Set the items except for the baud rate to.
(4) Sets the transmission modes.
Set the transmission modes to Switch No.3.
(5) Sets the terminator Connected or Not connected.
Set the terminator to Connected (ON).
(Table 9.1-1)
B. rate300bps 600bps 1,200bps 2,400bps 4,800bps 9,600bps 19,200bps
SW No.
1
OFF
ON
OFF
ON
OFF
ON
OFF
2
OFF
OFF
ON
ON
OFF
OFF
ON
3
OFF
OFF
OFF
OFF
ON
ON
ON
SW No.
4
5
6
7

Setting item
Stop bit
Data length
Even parity/Odd parity
Parity8

Initial setting

Setting switch ON
1 bit
7 bits
Even
Yes
Switch setting
effective

41

Setting switch OFF
2 bits8 bitsOdd
No
Initial file

Not
used
ON
ON
ON

9.2 Initial setting of Interface module (NC1L-RS4)(1) Define the user file area with system definition (File number: W30, File range: Number of data whichis required for the communication, Data format: SI).
For more details, refer to Fuji Users' manual [Command] for Program controller (MICREX-F).
(2) When communicating with the C series, set the program to the PLC to perform initial setting(addresses to store the C series setting item data) of one (1) scan after the power supply to the PLC
is turned on.
Communication is impossible if the initial setting (addresses to store the C series setting item data)
is not performed.

Note
Leave the PLC file memory addresses (W30.0000 to W30.0002) vacant since these will be used forthe top address for the temperature control.

9.3 Communication details
How to communicate between the CIT-200 and Interface module (NC1L-RS4)
The CIT-200 sets the CCT-235 to parameters via the CPT-20A after reading the PLC data memory
through the Interface module (NC1L-RS4).
The CIT-200 constantly monitors the CCT-235 via the CPT-20A and writes its status to the PLC data
memory.
After the power to the PLC is turned on, the PLC sets address 0 in the memory to top addressfor use of the communication with the CIT-200. The PLC sets the preset addresses (top address to top
address +19) to the number of CPT-20A units connected to the CIT-200, the number of CCT-235 units
connected to the CPT-20A and communication items.
After that, the PLC sets address 1 to 4660 (decimal) and address 2 to 22136 (decimal).
After the power to the CIT-200 is turned on, the CIT-200 continues to read the PLC addresses (0 to 2).
After confirming that address 1 is 4660 (decimal) and address 2 is 22136 (decimal), the CIT-200 reads
data of the addresses (top address to address +19) which has been set in address 0.
File memory "W30 and those which follow it" area is used for writing/reading address of the data.
(It is necessary to set the file memory area from the PLC side)
For more details, refer to Fuji Users' manual [Command] for Program controller (MICREX-F).

Note• Memory type is decided beforehand depending on the PLC selected by the Rotary switch.
To the address 0 of the predetermined memory, set the top address in the memory which is used
for communications with the CPT-20A.
• The CIT-200 directly reads from and writes to the data memory of the PLC, therefore the PLC
does not need to manage the communication procedure, and the program can be simplified.
• With writing to and reading from the PLC, the amount of data processed at a time is 20 channels
per item.

42

PLC data memory configuration• Fuji interface module (NC1L-RS4)(e.g.)
Top address in the memory: W30.1000
The number of CPT-20A units connected to the CIT-200: 5
The number of CCT-235 units connected to the CPT-20A: 10
All communication items: Used
To the address W30.1000, 160 (lower 4-bit), set the number of CPT-20A units connected to the CIT-200.
To the addresses [W30.1001 to W30.1004], set the number of CCT-235 units connected to the CPT-20A.
To the addresses [W30.1005 to W30.1007], select the communication item Used or Not used.
To the address W30.1008, set the signal (setting value change flag) sending the value from the PLC to
the CCT-235.
The addresses [W30.1009 to W30.1019] are used for future extension.
To the address W30.1020 and those which follow it, set the necessary points of the communication items(from the main setting value in sequence) to the addresses. The communication items have been set
at the addresses [W30.1005 to W30.1007].
However, the communication items which have not been set at the addresses [W30.1005 to W30.1007]
will not be assigned to addresses.
Address
W30.0000
W30.0001
W30.0002

Address
W30.1000

W30.1001

W30.1002

W30.1003

W30.1004

Contents
Sets top address in the memory used forcommunication.
Communication parameter setting
completion flag 1
Communication parameter setting
complete flag 2

Setting range, information
1000 (decimal)

Contents
Sets the number of CPT-20A units
connected to the CIT-200 to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 5 CPT-20A units are connected: 0005H
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 10 CCT-235 units are connected to
4 CPT-20A units (instrument No.0
to No.3): AAAAH
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) 10 CCT-235 units are connected to
instrument No.4 CPT-20A unit: 000AH
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) The CPT-20A is not connected: 0000H
Sets the number of CCT-235 units
connected to the CPT-20A to every 4-bit ofword data.
(0 is regarded as 1 unit.)(e.g.) The CPT-20A is not connected: 0000H

Setting range, information
160: The number of the CPT-20A
161: Ignored
162: Ignored
163: Ignored
Setting range: 1 to 10H
160: Instrument No. 0 CPT-20A
161: Instrument No. 1 CPT-20A
162: Instrument No. 2 CPT-20A
163: Instrument No. 3 CPT-20A
Setting range: 1 to AH

43

Fixed value 4660 (decimal)
Fixed value 22136 (decimal)

160: Instrument No. 4 CPT-20A
161: Instrument No. 5 CPT-20A
162: Instrument No. 6 CPT-20A
163: Instrument No. 7 CPT-20A
Setting range: 1 to AH
160: Instrument No. 8 CPT-20A
161: Instrument No. 9 CPT-20A
162: Instrument No. 10 CPT-20A
163: Instrument No. 11 CPT-20A
Setting range: 1 to AH
160: Instrument No. 12 CPT-20A
161: Instrument No. 13 CPT-20A
162: Instrument No. 14 CPT-20A
163: Instrument No. 15 CPT-20A
Setting range: 1 to AH

W30.1005

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

W30.1006

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

W30.1007

Designates Communication item Used/
Not used selection flag for every 1 bit ofword data.
1: Used
0: Not used

W30.1008

Designates the setting value change flag.

44

20 : Main setting value
21 : Main proportional band
22 : Integral time
23 : Derivative time
24 : Alarm 1 (high limit) setting
25 : Alarm 2 (low limit) setting
26 : Main proportional cycle
27 : Heater burnout alarm
28 : Control action Perform/Stop
29 : Auto-tuning Perform/Cancel
210: Alarm 1 (high limit) hysteresis
211: Alarm 2 (low limit) hysteresis
212: Control output ON/OFF action
hysteresis
213: Control output high limit
214: Control output low limit
215: PV (input) filter
20 : Temperature unit
21 : Control action (Heating/Cooling)
22 : Alarm 1 action
23 : Alarm 2 action
24 : Loop break alarm 1 action span
25 : Loop break alarm 1 action time
26 : Anti-reset windup
27 : PD (Manual) reset
28 : Sensor correction
29 : Loop break alarm 2 action span
210 : Loop break alarm 2 action time211: Cooling proportional band212: Cooling proportional cycle
213: Overlap band/Dead band
214: Cooling action mode
215: Cooling output ON/OFF action
hysteresis
20 : PV (input) reading
21 : MV reading
22 : Heater current (A) value reading
23 : Current status 1 reading
24 : Current status 2 reading
25 : Reading of Software version
information
26 : Instrument information reading
27 to 15: Ignored
0: No change
1: All setting items are changed.
2: Main setting value is changed.
3: Alarm 1, 2 and Heater burnout
alarm setting value are changed.
4: Main proportional band, Integral
time, Derivative time, Coolingproportional band, Overlap/Deadband setting value are changed.
5: Auto-tuning Perform/Cancel ischanged
6: Control action Perform/Stop ischanged.
7: Alarm 1, 2 action, Main proportional cycle, Cooling proportional cycle
are changed.
8: Control output high limit and low
limit are changed.

W30.1009 to
W30.1019
W30.1020 toW30.1119For future extension

W30.1120 toW30.1219

Main proportional band setting

W30.1220 toW30.1319
W30.1320 toW30.1419
W30.1420 toW30.1519

Integral time setting

W30.1520 toW30.1619

Alarm 2 (low limit) setting

W30.1620 toW30.1719

Main proportional cycle setting

W30.1720 toW30.1819

Heater burnout alarm setting

W30.1820 toW30.1919

Control action Perform/Stop

W30.1920 toW30.2019

Auto-tuning Perform/Cancel

W30.2020 toW30.2119

Alarm 1 (high limit) hysteresis setting

W30.2120 toW30.2219

Alarm 2 (low limit) hysteresis setting

W30.2220 toW30.2319

Control output ON/OFF action hysteresis
setting

W30.2320 toW30.2419

Control output high limit setting

W30.2420 toW30.2519

Control output low limit setting

W30.2520 toW30.2619

PV (input) filter setting

Main setting value (SV) setting

Derivative time setting
Alarm 1 (high limit) setting

45

Main setting value from Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Main proportional band from Ch1 to
Ch100
Setting range: 0.0 to 100.0%
Integral time from Ch1 to Ch100
Setting range: 0 to 3600 seconds
Derivative time from Ch1 to Ch100
Setting range: 0 to 3600 seconds
Alarm 1 (high limit) setting value from
Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Alarm 2 (low limit) setting value from
Ch1 to Ch100
Setting range: Refer to theInstruction manual for C series “11.2
Temperature control unit (CCT-235)”.
Main proportional cycle from Ch1 to
Ch100
Setting range: 1 to 120 seconds
Heater burnout alarm value from Ch1
to Ch100
Setting range: 0.0 to 20.0A [W(20A)]
0.0 to 50.0A [W(50A)]
Control action Perform/Stop from
Ch1 to Ch100
0: Control Stop 1: Control Perform
Auto-tuning Perform/Cancel from
Ch1 to Ch100
0: AT Cancel 1: AT Perform
Alarm 1 (high limit) hysteresis from
Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Alarm 2 (low limit) hysteresis from
Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Control output ON/OFF action
hysteresis from Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Control output high limit value from
Ch1 to Ch100
Setting range: Control output low
limit value to 105%
Control output low limit value from
Ch1 to Ch100
Setting range: -5% to Control output
high limit value
PV (input) filter value from Ch1 to
Ch100
Setting range: 0.0 to 10.0 seconds

W30.2620 toW30.2719
W30.2720 toW30.2819
W30.2820 toW30.2919

Temperature unit setting

W30.2920 toW30.3019

Alarm 2 action selection

W30.3020 toW30.3119

Loop break alarm 1 action span setting

W30.3120 toW30.3219

Loop break alarm 1 action time setting

W30.3220 toW30.3319
W30.3320 toW30.3419

Anti-reset windup setting

W30.3420 toW30.3519

Sensor correction setting

W30.3520 toW30.3619

Loop break alarm 2 action span setting

W30.3620 toW30.3719

Loop break alarm 2 action time setting

W30.3720 toW30.3819

Cooling proportional band setting

W30.3820 toW30.3919

Cooling proportional cycle setting

Control action setting
Alarm 1 action selection

PD (Manual) reset setting

46

Temperature unit from Ch1 to Ch100
0:1:Control action from Ch1 to Ch100
0: Heating action 1: Cooling action
Alarm 1 action from Ch1 to Ch100
0: No alarm action
1: High limit alarm
2: High limit alarm with standby
3: Low limit alarm
4: Low limit alarm with standby
5: H/L limits alarm
6: H/L limits alarm with standby
7: H/L limit range alarm
8: H/L limit range alarm with standby
9: Process high alarm
10: Process high alarm with standby
11: Process low alarm
12: Process low alarm with standby
Alarm 2 action from Ch1 to Ch100
The selection items are the same as
those of Alarm 1 action
Loop break alarm 1 action span from
Ch1 to Ch100
Setting range:
0.0 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Loop break alarm 1 action time from
Ch1 to Ch100
Setting range: 200 minutes
Anti-reset windup from Ch1 to Ch100
Setting range: 0 to 100%
PD (Manual) reset value from Ch1 to
Ch100
Setting range: Proportional band
converted value, however, within
the range of -199.9 to 999.9
Sensor correction value from Ch1 to
Ch100
Setting range:-100.0 to 100.0 (Thermocouple,
RTD)-1000 to 1000 (DC current, voltage)
Loop break alarm 2 action span from
Ch1 to Ch100
Setting range:
0.0 to 100.0 (Thermocouple, RTD)
1 to 1000(DC current, voltage)
Loop break alarm 2 action time from
Ch1 to Ch100
Setting range: 200 minutes
Cooling proportional band from Ch1
to Ch100
Setting range: Multiplying factor to
Heating proportional band
0.0 to 10.0 (ON/OFF action when set
to 0.0)
Cooling proportional cycle from Ch1
to Ch100
Setting range: 1 to 120 seconds

W30.3920 toW30.4019

Overlap/Dead band setting

W30.4020 toW30.4119

Cooling action mode selection

W30.4120 toW30.4219

Cooling output ON/OFF action hysteresis
setting

W30.4220 toW30.4319
W30.4320 toW30.4419
W30.4420 toW30.4519
W30.4520 toW30.4619
W30.4620 toW30.4719
W30.4720 toW30.4819
W30.4820 toW30.4919

PV (input) reading

Overlap/Dead band from Ch1 to
Ch100
Setting range: (Heating
proportional band converted value)
Cooling action mode from Ch1 to
Ch100
0: Air cooling (Linear characteristic)
1: Oil cooling (1.5th power of thelinear characteristic)
2: Water cooling (2nd power of thelinear characteristic)
Cooling output ON/OFF action
hysteresis from Ch1 to Ch100
Setting range:
0.1 to 100.0 (Thermocouple, RTD)
1 to 1000 (DC current, voltage)
Reading of PV from Ch1 to Ch100

MV (Manipulated variable) reading

Reading of MV from Ch1 to Ch100

Heater current (ampere) value reading

Reading of Heater current value from
Ch1 to Ch100
Reading of Current status 1 from
Ch1 to Ch100
Reading of Current status 2 from
Ch1 to Ch100
Reading of Software version
information from Ch1 to Ch100
Reading of Instrument informationfrom Ch1 to Ch100

Current status 1 reading
Current status 2 reading
Software version information reading
Instrument information reading

Example 1: Set Ch1 main proportional band to data memory address W30.1120.
Example 2: Set Ch100 heater burnout alarm to data memory address W30.1819.
Processing in the PLC
For the processing in the PLC, see page 33.

47

10. Specifications
10.1 Standard specifications
Name: PLC Interface Unit
Model
: CIT-200
Supply voltage: 100 to 240V AC, 50/60Hz
Allowable voltage fluctuation : 85 to 264V AC
Communication line
Between the CIT-200 and PLC: Based on RS-232C/RS-422A(RS-485) (Selectable by DIP switch)
Between the CIT-200 and CPT-20A: Based on RS-422A
External dimensions: 48 (W) x 96 (H) x 100 (D) mm
Mounting method: DIN rail mounting
Case: Flame resistant resin, Color: Black
Action indicator
Instrument power indicator : When the power supply to the instrument is turned on, a green LED(POWER) lights.
Communication indicator : When communicating between the CIT-200 and PLC, a yellow LED(TX/RX) blinks.
Setting
PLC type: Set with the Rotary switch. (pp.9, 10)
Communication between the PLC and CIT-200: Set with the DIP switch. (pp.9, 10)
Communication line between the PLC and CIT-200: Set with the DIP switch. (pp.9, 10)
Function
Communication function between the PLC and CIT-200:
Communication line
: Based on RS-232C/RS-422A (RS-485)
Based on RS-422A [120 terminator built-in between RXA(-)and RXB(+)]
Communication system : Half-duplex communication start-stop synchronous
Communication speed : 19200bps, 9600bps (Selectable by DIP switch.)
Data format
Start bit:1
Data length : 7, 8 (Selectable by DIP switch.)
Parity: None, even, odd (Selectable by DIP switch.)
Stop bit: 1, 2
Communication function between the CPT-20A and CIT-200:
Communication line
: Based on RS-422A [120 terminator built-in between RXA(-)and RXB(+)]
Communication speed : 19200bps fixed
Data format
Start bit:1
Data length : 7
Parity: EvenStop bit:1
Protocol
: Shinko protocol for the CPT-20A

48

Circuit isolation configuration

Power supply
Isolated

Isolated

CPU

Power 5V DC
Isolated

Communication
with CPT-20A

Power 12V DC
Isolated

Communication
with PLC

Isolated
PWM power

Isolation resistance
Between power terminal and ground terminal: 10M or greater at 500V DC
Dielectric strength
Between power terminal and ground terminal: 1.5kV AC for 1 minute
OthersPower consumption : Approx. 5VA
Ambient temperature : 0 to 50
Ambient humidity: 35 to 85%RH (Non-condensing)
Weight: Approx. 300g
Accessories: Instruction manual
1 copyTerminal cover (when option TC is added) 2 pieces

10.2 Optional specifications
Terminal cover [TC]Electric shock protection terminal cover49

11. Troubleshooting
If any malfunctions occur, check if the power is supplied to the PLC, CIT-200 and C series. If the power is
supplied to them, a green power indicator (POWER) lights up.
Check the following and C series “12. Troubleshooting” when they do not work even if the indicator lights up.

Warning
Turn the power supplied to the instrument OFF before wiring or checking.
Working with the power switched ON may result in severe injury or death due toElectric Shock.

n Problem: Communication is impossible.
Presumed cause

Solution• The disconnection of communication cable orimperfect contact between the cable and terminal• Setup of the CIT-200 is mistaken.
• Setup of the CPT-20A is mistaken.
• The wiring of communication cable is not correct.
• Setup of the PLC is not correct.
• Initial setting of the PLC is not correct.
• When using the communication line RS-422A,
terminators are not connected at the end of the
PLC unit.

Change the cable, or fasten the screw of
the terminal securely.
Refer to pages 9 and 10.
Refer to pages 9 and 10.
Wire it properly. (pp.13 to 17)
Setup of Mitsubishi PLC: pp. 17 to 19
Setup of Omron PLC : pp. 34
Setup of Fuji PLC: pp. 41
Initial setting of Mitsubishi PLC : pp. 20
Initial setting of Omron PLC : pp. 34 to 40
Initial setting of Fuji PLC: pp. 42 to 47
Connect terminators, referring to the instruction
manual for each PLC.

If any unexplained malfunctions occur other than the above mentioned, make inquiries at our agency or
the shop where you purchased the unit.

50

51

******* Inquiry *******For any inquiry about this unit, please contact the shop where you purchased or our agency after
checking the following.
• Model name ··························· CIT-200• Option ···································· TC• Instrument number ················· No.XXXXXX
In addition to the above, please let us know the details of malfunction, if any, and the operating
conditions.

SHINKO TECHNOS CO.,LTD.
OVERSEAS DIVISION

Reg. Office : 2-48, 1-Chome, Ina, Minoo, Osaka, Japan
Mail Address : P.O.Box 17, Minoo, Osaka, JapanURL: http://www.shinko-technos.co.jp
Tel : 81-72-721-2781
E-mail: overseas@shinko-technos.co.jp
Fax: 81-72-724-1760
No.CIT21E2
52

2004.01