The Omron CJ1W-SCU22 is a CJ1W-series communications module (Type: Communications Module) sized for the CJ Series PLC backplane, DIN-rail mounted with a D-Sub field-side connector — same form factor as the rest of the SCU family. It carries the multi-region approval set CE, cULus, Lloyd and NK, so it is acceptable for European panel builds, North-American UL-listed cabinets and shipboard installations that call for Lloyd or NK on the bill of materials.
Panel-side fit
DIN-rail mount means the card drops onto the same Omega rail the rest of the CJ1W I/O and CPU family uses, with field wiring landing on the D-Sub connector — verify the D-Sub pinout and shield grounding against the existing drawing before energizing, since the SCU22's port profile differs from other SCU siblings even when the shell looks identical.