- RS-232C Option Board, Can be mounted in either CPU Unit Option Board slot 1 or 2. *1 : CP1W-CIF01
- RS-422A/485Option Board, Can be mounted in either CPU Unit Option Board slot 1 or 2 *1 : CP1W-CIF11
- RS-422A/485 (Isolated-type) Option Board, Can be mounted in either CPU Unit Option Board slot 1 or 2 *1 : CP1W-CIF12
- Ethernet Option Board, Can be mounted in either CPU Unit Option Board slot 1 or 2 *1 *2 *4 : CP1W-CIF41
- Analog Input Option Board, Can be mounted in either CPU Unit Option Board slot 1or 2 *3 2 Analog inputs 0-10V (Resolution 1/4,000) 0-20mA (Resolution 1/2,000) : CP1W-ADB21
- Analog Output Option Board, Can be mounted in either Option Board slot 1 or 2 *3 2 Analog outputs 0-10v (Resolution 1/4,000) : CP1W-DAB21V
- Analog I/O Option Board, Can be in either CPU Unit Option Board slot 1 or 2 *3 2 Analog inputs 0-10v (Resolution 1/4,000) 0-20v (Resolution1/2,000) 2 Analog outputs 0-10V (Resolution 1/4000) : CP1W-MAB211
- LDC Option Board, Can be mounted only in the CPU Unit Option Board slot 1. *1 : CPW-DAM01
- Memory Cassette, Can be used for backing up programs or auto-booting : CP1W-ME05M
