The CS1W-II102 is an Interface Module for Omron's CS Series PLCs — it expands the I/O bus on the backplane, letting you add remote or local I/O racks beyond the CPU's built-in capacity. It mounts directly into the CS1W backplane (no DIN rail), terminated via a rectangular connector that mates with the rack's internal bus. Rated for 0°C~55°C operating ambient, it covers standard industrial panel environments without derating concerns. Approvals include CE, CSA, Lloyd, NK, and UL, so it's accepted in European, North American, and marine-classified installations.
This part is discontinued — no longer in active production by Omron. There is no official direct replacement order code listed.
Integration note
Backplane mount means it slides into a CS1W rack slot — no DIN rail or panel cutout. The rectangular connector is keyed to the rack's backplane bus; verify slot orientation before seating. Operating temperature 0°C~55°C matches other CS1W modules, so no special thermal derating in a standard panel.