What this CPU is — and what it isn't
The CJ1M-CPU13-ETN is a CJ1-series PLC CPU with 32K Words memory, split as 20K program steps and 32K data words. It carries built-in Ethernet and RS-232C (CompoWay/F, Modbus) communications, so it can talk to a SCADA or HMI without an extra serial-to-Ethernet adapter. The unit mounts on DIN rail, runs on CX-One software, and includes a battery backup for retained data. Expandable to 20 modules on one rack.
Lifecycle reality: discontinued
The CJ1M-CPU13-ETN is officially discontinued. There is no direct Omron replacement order code listed; the closest functional sibling is the CJ1M-CPU11-ETN, which shares the same memory size and communications but is non-expandable (0 modules max). For a like-for-like expandable replacement, you will need to source through surplus or broker channels — submit an RFQ for current availability and lead time.
Panel fit and compliance
Approved for CE, cULus, Lloyd, and NK — covers industrial and marine installations. Operating temperature range is 0°C to 55°C. No display on the unit; all configuration is through CX-One via the RS-232C or Ethernet port.