Omron CJ1W-SCU31-V1 Serial Communication Unit RS-232 for CJ Series
SKU: CJ1W-SCU31-V1USD 195.00
Omron CJ1W-SCU31-V1 is an RS-232 serial communication unit for CJ series PLCs, enabling serial device connectivity.
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Product Overview
The CJ1W-SCU31-V1 extends CJ PLC communication capabilities when equipment requires serial protocols or legacy device interfacing. It is practical for mixed-generation plants where older instruments and peripherals remain operationally important. By adding dedicated serial communication channels at the PLC level, this module supports cleaner architecture, reduced protocol conversion complexity, and easier long-term maintenance of established machine lines.
- SKU: CJ1W-SCU31-V1
- Series: CJ1W
Best-Fit Applications
- Connecting CJ PLCs to serial HMIs and operator panels
- Interfacing barcode or serial data readers
- Linking legacy instruments to modern control logic
- Supporting serial protocol communication in retrofit lines
- Maintaining existing serial field devices during phased upgrades
- Standardizing serial integration methods across installed machines
Buying Checklist
- Preserves value of legacy serial equipment
- Reduces integration friction in mixed-technology plants
- Extends useful life of installed CJ systems
- Improves communication architecture maintainability
- Cost-effective alternative to full system replacement
Technical Specifications
| Model | CJ1W-SCU31-V1 |
|---|---|
| Series | CJ1W |
| Type | Serial Communication Unit |
| Ports | 1x RS-232C |
| Protocols | Host Link, Modbus-RTU, NT Link, Protocol Macro |
| Baud Rate | 300 bps to 115.2 kbps |
| Max Distance | 15m (RS-232C) |
| Isolation | Non-isolated |
| Current Consumption | 150mA at 5VDC |
| Compatible CPUs | CJ1M, CJ1G, CJ1H, CJ2M, CJ2H |
| Operating Temperature | 0 to +55°C |
| Mounting | CJ series backplane |
Resources & Downloads
FAQ for CJ1W-SCU31-V1
What devices can I connect via RS-232C?
HMIs (serial), barcode readers, scales, printers, instruments. Any device with RS-232C interface. Max distance 15m.
Can I use this for Modbus communication?
Yes, configure as Modbus-RTU master or slave. Connect to Modbus devices (VFDs, meters, etc.). Configure baud rate, parity, slave address.
What's the difference between SCU31 and SCU32?
SCU31: RS-232C only. SCU32: RS-232C + RS-422/RS-485. Choose SCU32 for multi-drop or longer distance communication.
How do I configure this unit?
Configure in CX-Programmer: set baud rate, parity, protocol. Configuration downloads to CPU. Unit auto-recognized on backplane.
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