Omron CJ1W-SCU21-V1 Programmable Logic Controller

The Omron CJ1W-SCU21-V1 PLC Serial Communications Unit provides two serial ports for connecting a CJ-series Programmable Logic Controller with compatible industrial devices and operator interfaces. The module supports RS-232C and RS-422A/485 communication, allowing the ports to support host link, NT link, and serial gateway functions. This communication capability enables control data to move between the PLC and serial devices without relying on the controller's standard I/O channels. The dual-port configuration supports automation architectures where multiple serial communication paths are required alongside the main machine-control process. The CJ1W-SCU21-V1 extends CJ1W communication capability and forms part of the serial communication PLC range used across Omron machine control applications.