What this module does
The CJ1WCTL41E is a Counter Module in the Omron CJ1W series, designed for the CJ Series PLC platform. It provides 4 channels of driver line input for counting applications — think encoder feedback or high-speed pulse counting in packaging, labeling, or cut-to-length machines.
Physical and electrical fit
Mounts on a DIN rail, termination via a rectangular connector — typical for the CJ1W backplane bus. Operating range is 0°C to 55°C, so it's fine for a ventilated cabinet but not for a hot, sealed enclosure without derating.