Lifecycle & Sourcing Reality
The CJ1H-CPU65H is discontinued per Omron's product lifecycle status. No official successor is listed in the available documentation. Sourcing this part now goes through surplus or broker channels — we can source it, but lead time and availability vary. If you need a current-production alternative, the CJ1H-CPU66H is a close functional peer within the same CJ1 series, sharing the same expandability to 40 modules (3 racks) and RS-232C communication, but with a larger memory of 32K Words (same as the CPU65H per the spec table). Verify program size before swapping.
System Fit & Expandability
This CPU supports up to 40 modules across 3 racks. Memory is 32K Words. RS-232C port handles programming via CX-One software. No Ethernet onboard.
Comparison: CJ1H-CPU65H vs CJ1H-CPU66H
The CJ1H-CPU66H is the closest sibling — same series, same expandability (40 modules, 3 racks), same RS-232C, same weight and mounting. The spec table shows identical memory size (32K Words) for both, so the difference may lie in firmware or optional features not captured here. For a drop-in replacement in an existing panel, the CPU66H should fit the same rack and backplane without rewiring, but confirm the program fits and any special function blocks are supported.