What the CJ1W-CLK23 does on the CJ-series backplane
The Omron CJ1W-CLK23 is a Controller Link Module that plugs into a CJ-series PLC rack, handling the data-link communications between multiple CJ1, CJ2, or CS1 controllers on the same network. The module carries CE and UL approvals, so it is accepted in panels destined for European and North American markets without a separate agency review.
End-of-life sourcing reality
Wiring and panel fit
Screw-terminal wiring on the front face means the Controller Link cable lands directly on the module without a separate breakout board — field termination is straightforward for a technician with a screwdriver. The module snaps onto a DIN rail inside the control panel. It is designed for a CJ-series CPU rack or expansion rack; the backplane connector transfers data and power from the rack bus.