Serial Communication Unit CJ1W-SCU
Brand :
OMRON
Caution
Product Description
Serial Communication Unit CJ1W-SCU
The Serial Communication Unit is commonly used in factory automation and offer a wide variety of type to choose from.
[Feature]
• Device name : Serial Communication Unit
• Serial Port
- CJ1W-SCU22(Port1 : RS-232C and Port2 : RS-232C )
The Serial Communication Unit is generally used in factory automation systems.
Serial Communication Unit CJ1W-SCU Specifications of OMRON PLC
PLC Appearance of Model CJ1W-SCU22/Model CJ1W-SCU21-V1/SCU31-V1/SCU41-V1
Note: Appearance may vary depending on model.
PLC Appearance of the CJ1W-SCU32
PLC Appearance of the CJ1W-SCU42
PLC Model CJ1W-SCU22 / Model CJ1W-SCU21-V1 / SCU31-V1 / SCU41-V1 dimensional diagram (unit: mm)
PLC Model CJ1W-SCU32 dimensional drawing (unit: mm)
PLC Model CJ1W-SCU42 dimensional drawing (unit: mm)
Features of PLC
- It is also possible to connect an RS-232C/RS-422A conversion unit (NT-AL001) to the RS-232C port to enable 1:N communication.
- The CJ1W-SCU□2 model enables connection to high-speed external devices by improving communication speeds (up to 230.4 kbps) and reducing data transfer times to the CPU unit.
System Configuration Diagram of OMRON PLC
CJ1W-SCU system configuration diagram
Kinds of OMRON PLC
About overseas standards
- The symbols are as follows: UC1: cULus (Class I Div 2 hazardous location certified product), N: NK, L: Lloyd.
- Please contact our support center for information on terms of use.
| Unit Type | Product Name | specification | Number of occupied units | Current consumption (A) | format | International Standards | |
|---|---|---|---|---|---|---|---|
| Communication Interface Section | Communication features | 5V system | |||||
| CJ1 CPU High Performance Unit | Serial communication unit high speed type | RS-232C x 2 ports | In the CJ system, the following functions can be selected for each port : Protocol macro , Host link , NT link (1:N mode) , Serial gateway , No procedure , Modbus-RTU slave In the NJ system, the following functions can be selected for each port : Protocol macro , Serial gateway , No procedure *3 , Modbus-RTU slave | Unit 1 | 0.28 *1 | Model CJ1W-SCU22 *2 | UC1, N, L |
| RS-422A/485 x 2 ports | 0.40 | Model CJ1W-SCU32 *2 | UC1, N, L, CE | ||||
| RS-232C x 1 port RS-422A/485 x 1 port | 0.36 *1 | Model CJ1W-SCU42 *2 | |||||
| CJ1 CPU High Performance Unit | Serial Communication Unit | RS-232C x 2 ports | The following functions can be selected for each port : Protocol macro *4 , Host link , NT link (1:N mode) , Serial gateway *5 , Non-procedure *6 , Modbus-RTU slave *7 | Unit 1 | 0.28 *1 | Model CJ1W-SCU21-V1 *8 | UC1, N, L |
| RS-422A/485 x 2 ports | 0.38 | Model CJ1W-SCU31-V1 *8 | UC1, N, L, CE | ||||
| RS-232C x 1 port RS-422A/485 x 1 port | 0.38 *1 | Model CJ1W-SCU41-V1 *8 | UC1, N, L | ||||
- *1When using the RS-232C/RS-422A conversion unit NT-AL001, the current will increase by 0.15 A per unit.
- *2. The simple backup function and interrupt notification function cannot be used with the NJ system.
- *3 . The SerialRcvNoClear instruction is available only for Serial Communication Unit version 2.1 or later, NJ-series CPU Unit version 1.03 or later, and Sysmac Studio version 1.04 or later.
- *4The protocol macro trace function works when the CPU unit is in run/monitor mode. (NJ-series CPU units do not have a monitor mode.)
- *5. The serial gateway function is only available for serial communication units version 1.2 or later.
- *6 . The non-procedure function is only available for serial communication units with version 1.2 or later. (The CPU unit must also be version 3.0 or later.)
- *7. The Modbus-RTU slave function is only available for serial communication units version 1.3 or later.
- *8This unit cannot be used with the NJ-series Machine Automation Controller.
Serial Communication Unit AccessorOMRON ies
| format | accessories | specification |
|---|---|---|
| Model CJ1W-SCU32 | Serial port (RS-422A/485) connector x 2 | Terminal block connector (FMC1.5/5-STF-3.5AU) manufactured by Phoenix Contact |
| Model CJ1W-SCU42 | Serial port (RS-422A/485) connector x 1 | Terminal block connector (FMC1.5/5-STF-3.5AU) manufactured by Phoenix Contact |
Note: The serial port (RS-232C) connector is not included. If you are using a serial port, please also purchase a serial port connector.
Plug: XM3A-0921 or equivalent
Hood: XM2S-0911-E or equivalent
Implementable Devices of OMRON PLC
| format | NJ System | CJ System (CJ1, CJ2) | CP1H System | NSJ Systems | ||||
|---|---|---|---|---|---|---|---|---|
| CPU rack *4 | Expansion rack *4 | CPU unit | Additional Equipment | CP1H main unit | NSJ Main Unit | Additional Equipment | ||
| Model CJ1W-SCU22 | Unit Ver.2.0 | 10 units | 10 units (per additional rack) | 10 units *1 | 10 units *2 (per additional device) | 2 units *3 | No | 10 units *2 (per additional device) |
| Model CJ1W-SCU32 | Unit Ver.2.0 | |||||||
| Model CJ1W-SCU42 | Unit Ver.2.0 | |||||||
| Model CJ1W-SCU21-V1 | Unit Ver.1.3 | No | ||||||
| Model CJ1W-SCU31-V1 | Unit Ver.1.3 | |||||||
| Model CJ1W-SCU41-V1 | Unit Ver.1.3 | |||||||
Note: The number of units that can be installed in one device may be less than the above number depending on the current consumption of the other installed units.
- *1 . This applies when using a CJ2H CPU Unit (without EtherNet/IP function) CJ2H-CPU6@ and a Power Supply Unit CJ1W-PA205@ or CJ1W-PD025@ (when not using NT-AL001).
- *2. This is the number when using the CJ1W-PA205□ or CJ1W-PD025 power supply unit.
- *3. Requires CJ-Unit Adapter CP1W-EXT01.
- *4. A total of 16 units including any other CPU high-performance units that may be installed.
Specification Table of OMRON PLC
| Controller Series | CJ Series | ||||||
|---|---|---|---|---|---|---|---|
| Product name | Serial Communication Unit | ||||||
| Unit Type | CPU high-performance unit | ||||||
| format | Model CJ1W-SCU22 | Model CJ1W-SCU32 | Model CJ1W-SCU42 | Model CJ1W-SCU21-V1 | Model CJ1W-SCU31-V1 | Model CJ1W-SCU41-V1 | |
| Serial Communication Port | Port 1 | RS-232C | RS-422A/485 | RS-422A/485 | RS-232C | RS-422A/485 | RS-422A/485 |
| Port 2 | RS-232C | RS-422A/485 | RS-232C | RS-232C | RS-422A/485 | RS-232C | |
| protocol | Port 1 | Host link, protocol macro, serial gateway, no procedure, NT link, Modbus-RTU slave, loopback test, or host link 1:1 procedure mode can be selected for each port *1 *2 | Either host link, protocol macro, NT link or loopback test can be selected for each port.- Unit version 1.2 and later also supports serial gateway, no procedure and host link 1:1 procedure *1 . Unit version 1.3 and later supports Modbus-RTU slave mode. | ||||
| Port 2 | |||||||
| CPU unit | A maximum of 16 units in total including other installed CPU Bus UnitsNo restrictions on installation locationHowever , when using external interrupt tasks, the unit must be installed in one of the following slots on the CPU device. -When installed in a CJ2H-CPU6@-EIP: slots 0 to 3 -When installed in a CJ2H-CPU6@, CJ2M-CPU@@, or CJ1G/H-CPU@@H: slots 0 to 4 -When installed in a CJ1M-CPU@@: slots 0 to 2If installed in any other slot, the external interrupt task will not start. | With other CPU high-performance units installed, a maximum of 16 units can be installed. No restrictions on installation position. | |||||
| Additional Equipment | |||||||
| Data exchange with the CPU unit | Soft switch and constant status refresh | Occupies 25CH out of 25CH in the CPU high-performance unit relay area (always exchanges data with the CPU unit) | |||||
| Transferring system settings from the CPU Unit | Occupies 10CH (total 20CH) per serial port in the CPU high-performance unit DM area. Data transfer from the CPU unit, power ON, restart , ladder (STUP) command , and system setting change (AR area) OFF→ON at the following times. | ||||||
| Simple backup function | The CPU Unit's simple backup operation allows protocol macro data in the Serial Communications Unit to be backed up to a memory card, restored, and verified (only when using CJ2/CJ1-H/CJ1M CPU Units). | ||||||
| Current consumption *3 | 280mA+x | 400mA | 360mA+x | 280mA+x | 380mA | 380mA+x | |
| mass | Under 160g | Under 120g | Under 140g | Under 110g | Under 110g | Under 110g | |
- *1Serial Gateway: The serial gateway function can be executed even in protocol macro mode.
- *2Non-protocol: An external interrupt task can be started when receiving data without procedure. When combined with a CJ2 CPU Unit version 1.1 or later or a CJ2M CPU Unit, high-speed non-protocol (DRXDU/DTXDU instructions) is possible.
- *3. Current consumption for the serial communications unit alone.
When using the NT-AL001, power is supplied to the NT-AL001 from the serial communications unit. When using the NT-AL001
, the current consumption increases by 0.15 A for each NT-AL001.
The current consumption value differs for each unit. Please be careful when replacing units.
x: 0.15 A is added per port for the 5 V power supplied from the RS-232C port to the NT-AL001.
External Interface of OMRON PLC
External interfaces include an RS-232C port and an RS-422A/485 port.
PLC External interface for CJ1W-SCU21-V1/SCU22
PLC External interface for CJ1W-SCU41-V1
PLC External interface for CJ1W-SCU42
*Only some product information is listed.