Shinko CIT-200 User manual

PLC INTERFACE UNIT
CIT-200
INSTRUCTION MANUAL

2
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 the
CIT-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 the
power 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 of
using 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.
Caution
Procedures 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.

3
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.
Caution
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 not
change 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.

4
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.

5
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 Setup
7.1.1 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

6
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, and
this 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)

7
1.3 System configuration
When using the CBT-210
(Fig.1.3-1)
When using the CBT-205
(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
The CIT-200 receives the data from the data memory in the PLC,
CIT-200 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 and
CPT-20A sends the data to the CCT-235.
The CPT-20A receives the response data from the CCT-235 and
sends it to the CIT-200.
The CCT-235 receives the sending data from the CPT-20A, and
CCT-235 performs the control. The CCT-235 sends the control data to the
CPT-20A.
RS-422A
Link unit
CPT-20A
CPT-20A
RS-232C
or
RS-422A
RS-422A
RS-422A
RS-422A
CPU
unit
PLC
CIT-200
Link unit
CPT-20A
CPT-20A
CIT-200
RS-232C
or
RS-422A
RS-422A
RS-422A
RS-422A
CPU
unit
PLC

8
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 name
label.
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
No. x x x x x x
Model name: CIT-200
Option: Terminal cover
Instrument number (indicated only on the inner assembly.)
3. Name and functions of the sections
(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 jack
Connects 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.
(3)
Terminal block
for power source
(1)
(2)
TX/RX
POWER
(4)
(5)
Internal
assembly
(6)
Terminal block
for communication

9
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.
Notice
Set 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).
(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
SW No.
PLC and
its manufacturer
Communication
command
Communication
protocol Using memory
0 Mitsubishi MELSEC ACPU common command
“WR, WW” compatible
Host link unit protocol
(Protocol 4)
R register
1 Mitsubishi MELSEC ACPU common command
“WR, WW” compatible
Host link unit protocol
(Protocol 4)
D register
2 Omron C200H RD/WR command Host link unit protocol DM
3 Fuji MICREX-F70. Host link unit protocol SI, W30
4 Mitsubishi MELSEC ACPU common command
“QR, QW” compatible
Host link unit protocol
(Protocol 4)
R register
5 Mitsubishi MELSEC ACPU common command
“QR, QW” compatible
Host link unit protocol
(Protocol 4)
D register
6 to F
TX/
RX
POWE
R
*(1)
0
8
C
4
9
A
B
D
E
F
1
2
3
5
6
7
Internal
assembly
1
4
3
2
5
8
7
6
O
N
12
O
N
Terminal block
for communication
Terminal block
for Power source
*(2)
*(3)

10
PLC manufacturer Model name
Mitsubishi Electric Corp. AJ71UC24, A1SJ71UC24-R2/R4, QJ71C24
Omron Corp. LK201-V1, LK202-V1
Fuji Electric Co., Ltd. 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. Contents ON OFF
1 Communication speed 19200bps 9600bps
2 Data length 7 bits 8 bits
3 Parity Used Not used
4 Parity Odd Even
5 Stop bit 2 bits 1 bit
6 to 8
*(3) DIP switch for selecting communication line (Default value: RS-422A)
(Do not use the switch combination other than the below)
DIP switch
No.1
DIP switch
No.2
Communication line
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 to as shown below except for No.2.
DIP SW No. Contents ON OFF
1 Communication speed 19,200bps 9,600bps
2 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).

11
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 not
change 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
(
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.
482
496
94 6 4
DIN rail

12
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.
(Fig. 6.1-1)
6.2 Communication interface
(1) RS-232C
Signal name Code Signal direction Terminal No.
Sending data TX Output 5
Receiving data RX Input 6
Ground for the signal, or
common return cable COM 7
Cable length: Maximum 10m
(2) RS-422A
Signal name Code Signal direction Terminal No. Terminator
TXA (-) 8
Sending data TXB (+) Output 9
RXA (-) 10
Receiving data RXB (+) Input 11 Built-in
Ground for the signal, or
common return cable COM 12
Cable length: Maximum 1km
50/60Hz
TX/RX
POWER
10
9
8
7
6
5
1
4
3
2
11
12
13
14
RXA(-)
TXB(+)
TXA(-)
COM
RX
TX
RS-232C
COM
RXB(+)
RS-422A
TX/RX
POWER
10
9
8
7
6
5
1
4
3
2
11
12
13
14
CIT-200CPT-20A
Communication
cable (CPP)
Ground
Terminal block
for power source
50/60Hz
Terminal block
for digital
input/output
Terminal block
for power source
To the PLC
Terminal block
for communication
Ground
100 to 240V AC 100 to 240V AC

13
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 for
each PLC.
Solderless terminal
Use a solderless terminal with an isolation sleeve that fits to the M3 screw as shown below.
(Fig.6.3-1)
Solderless
terminal Manufacturer Model name Fastening torque
Nichifu Terminal Industries CO., LTD. 1.25-Y3
Y type Japan Solderless Terminal MFG CO., LTD. VD1.25-B3A
Nichifu Terminal Industries CO., LTD. 1.25-3
Round type Japan Solderless Terminal MFG CO., LTD. V1.25-3
0.6N･m
Max. 1.0N･m
Recommended cable
Name Manufacturer Communication line
OTSC-2PVB-7/0.32TA ONAMBA CO., LTD. RS-232C
OTSC-3PVB-7/0.32TA ONAMBA CO., LTD. RS-422A
Recommended D sub connector
Model Manufacturer Name
DE-9SF-N Japan Aviation Electronics Ind., Ltd. D sub 9-pin ( ) connector
DE-C1-J6 Japan Aviation Electronics Ind., Ltd. D sub 9-pin connector cover
DB-25PFT-N Japan Aviation Electronics Ind., Ltd. D sub 25-pin ( ) connector
DB-C2-J9 Japan Aviation Electronics Ind., Ltd. D sub 25-pin connector cover





5.8mm or less
3.2mm





3.2mm
5.8mm or less

14
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
(Fig.6.3.1-1)
• RS-422A (AJ71UC24, A1SJ71UC24-R4, QJ71C24)
Cable length: Maximum 1km
(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
(Fig.6.3.2-1)
(FX2N-XXMR)
CIT-200
TX
RX
COM
2
3
5
RD
SD
SG
D sub 9-pin (凸)
GND Twisted
shield wire
Micro PLC
5
6
7
4
Calculator link unit
RDA
RDB
SG
SDA
SDB
CIT-200
TXA (-)
TXB (+)
RXA (-)
RXB (+)
COM
GND
8
9
10
11
12
4Twisted
shield wire
D sub 25-pin(凸)
Calculator link unit
(AJ71UC24)
CIT-200
TX
RX
COM
2
3
7
SD
RD
SG
GND
(A1SJ71UC24-R2)
CIT-200
TX
RX
COM
2
3
5
RD
SD
SG
D sub 9-pin(凸)
GND
Twisted
shield wire
Twisted
shield wire
Calculator link unit
5
6
7
4
5
6
7
4
Serial communication unit
(QJ71C24)

15
• RS-422A (FX2N-XXMR)
Cable length: Maximum 1km
(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
(Fig.6.3.3-1)
• RS-422A (C200H-LK202-V1)
Cable length: Maximum 1km
(Fig.6.3.3-2)
Twisted
shield wire
SDA
SDB
SG
RDA
RDB
CIT-200
TXA (-)
TXB (+)
RXA (-)
RXB (+)
COM
GND
(FX2N-XXMR)
Micro PLC
8
9
11
4
10
12
Twisted
shield wire
(C200H-LK202-V1)
1
3
9
D sub 9-pin (凸)
5
6
SDA
SDB
SG
RDA
RDB
CIT-200
TXA (-)
TXB (+)
RXA (-)
RXB (+)
COM
GND
8
9
11
4
10
12
Host link unit
D sub 25-pin (凸)
(C200H-LK201-V1)
CIT-200
TX
RX
COM
2
3
7
SD
RD
SG
GND
5
6
7
4
Host link unit
Twisted
shield wire

16
6.3.4 Wiring between the CIT-200 and Fuji Interface module
• RS-232C (NC1L-RS2)
Cable length: Maximum 10m
(Fig.6.3.4-1)
• RS-422A (NC1L-RS4)
Cable length: Maximum 1km
(Fig.6.3.4-2)
5
6
7
4Twisted
shield wire
CIT-200
TX
RX
COM
2
3
7
SD
RD
SG
GND
(NC1L-RS2)
D sub 25-pin (凸)
Interface module
(NC1L-RS4)
SDA
SDB
SG
RDA
RDB
CIT-200
TXA (-)
TXB (+)
RXA (-)
RXB (+)
COM
GND
8
Interface module
10
11
12
4Twisted shield wire
9

17
7. Communication between the CIT-200 and
Mitsubishi PLC
7.1 Setup
7.1.1 Setup of Calculator link unit (AJ71UC24)
(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(Table7.1.1-1).
Set the items except for the baud rate to .
(Fig. 7.1.1-1)
(Table 7.1.1-1)
Setting switch Setting item Setting switch ON Setting switch OFF
SW11 Main channel setting RS-422A RS-232C
SW12 Data bit setting 8 bits 7 bits
Baud rate 9600bps 19200bps
SW13 ON OFF
SW14 OFF ON
SW15
Transmission speed setting
ON ON
SW16 Parity setting Yes No
SW17 Even/Odd parity setting Even Odd
SW18 Stop bit setting 2 bits 1 bit
SW21 Checksum setting Yes No
SW22 Writing during RUN Possible Impossible
SW23 Calculator link/multi-drop link
selection Calculator link Multi-drop link
SW24 Not used
STATION NO.
×10
MODE
×1
SW11
SW12
SW13
SW14
SW15
ON
(1)
STATION NO.
SW16
SW17
SW18
SW21
SW22
SW23
SW24
ON
(2)
(3)
(4)

18
7.1.2 Setup of Calculator link unit (A1SJ71UC24-R4)
(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(Table7.1.2-1).
Set the items except for the baud rate to .
(Fig.7.1.2-1)
(Table 7.1.2-1)
Setting switch Setting item Setting switch ON Setting switch OFF
SW01 Not used
SW02 Calculator link/Multi-drop link
selection Calculator link Multi-drop link
SW03 Not used
SW04 Writing during RUN Possible Impossible
Baud rate 9600bps 19200bps
SW05 ON OFF
SW06 Transmission speed setting OFF ON
SW07 ON ON
SW08 Data bit setting 8 bits 7 bits
SW09 Parity setting Yes No
SW10 Even/Odd parity setting Even Odd
SW11 Stop bit setting 2 bits 1 bit
SW12 Checksum setting Yes 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(BitOFF) 1(BitON)
b0 Data length 7 bits 8 bits
b1 b2, b1
b2 Parity ( 1, 1): Even
b3 Stop bit 1 bit 2 bits
b4 b7, b6, b5, b4
b5 ( 1, 0, 0, 0): 9600bps
b6 ( 1, 0, 0, 1): 19200bps
b7
Baud rate
(bps)
b8 Header No Yes
b9 Terminator Not connected Connected
b10 b11, b10
b11 ( 0, 0): RS-485 interface
b12 Not available
b13 Checksum Not applied Applied
b14 Protocol Not used Used
b15 Control procedure Protocol 1 Protocol 4
x 1
MODE
STATION NO.
ON
SW05
SW06
SW07
SW08
SW09
SW10
SW11
SW12
ON
SW01
SW02
SW03
SW04
(2)
x 10 (1)
(3)
(4)
Control cable
Must be specified

19
Note
hCommunication format is used to decide the setting of the above (Table 7.1.3-1) and
can 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 then
ON 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
(Fig. 7.1.3-1) (Fig. 7.1.3-2)
nHow 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.
(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).
MOV HE086 D8120
M8002
MOV HE096 D8120
M8002
MOV H0000 D8121
M8002

20
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 data
of the C series after the power supply to the PLC is turned on. Communication is impossible if the
addresses 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 the
addresses (R0000 to R0002) are used to set the top address for the temperature control.
• Sample program
(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 the
communication 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).
M9038
MOV K1000 R0000
MOV HAAAA R1001
MOV HFFFF R1005
MOV HFFFF R1006
MOV H007F R1007
MOV H1234 R0001
MOV H5678 R0002
END
MOV HAAAA R1002
MOV H00AA R1003
MOV H0000 R1004
MOV H000A R1000
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)