CJ1M CPU Units (with Built-in I/O) : CJ1M-CPU23, CJ1M-CPU22, CJ1M-CPU21

- 640 points/ 20 Units (Expansion Racks max), 20K steps, 10 points and 6 outputs 2 counter inputs, 2 pulse outputs : CJ1M-CPU23
- 320 points/ 10 Units (No Expansion Rack), 10steps : CJ1M-CPU22
- 160 points/ 10 Units (No Expansion Rack), 5K steps : CJ1M-CPU21