Overview
The CJ1W-SCU21-V1 is a CJ Series Serial Communications Unit from Omron, providing a single serial port for Host Link or protocol macro communication. It mounts on a DIN rail, draws 0.28 A from the backplane, and is allocated 25 words in the CPU Bus Unit CIO Area for constant data exchange with the CPU.
Lifecycle and Sourcing
Omron has discontinued the CJ1W-SCU21-V1. No official successor is listed in the evidence. For existing panels requiring this exact unit, sourcing now runs through surplus and broker channels; an RFQ confirms current availability and lead time.