N30/40/60, NA20 CPU Units Option Board : CP1W-CIF01,CP1W-CIF11,CP1W-CIF12,CP1W-CIF41,CP1W-ADB21,CP1W-DAB21V,CP1W-MAB221

Option Board RS-232C, Option Board CP1W-CIF01 RS-422A/485 Option Board CP1W-CIF11 (Maximum Transmissions distance: 500m) RS-422A/485 Option Board (Isolated-type) CP1W-CIF12 (Maximum Transmission distance: 500m) Ethernet Option Board CP1W-CIF41 (CP1E PLCs are supported by CP1W-CIF41 Version 2.0 or later) Analog Input Option Board CP1W-ADB21 (For CPU Unit Version 1.2 r later) Analog Output Option Board CP1W-DAB21V (For CPU Unit Version 1.2 or later) Analog I/O Optio Board CP1W-MAB221 (For CPU Unit Version 1.2 or later)