Omron SYSMAC CS Series Operation Manual page 659

Specifications of Basic I/O Units and High-density I/O Units
Terminal Connections: CS1W-ID291 24-V DC 96-point Input Unit
• The polarity of the input power supply can be in either direction, as indicated by the dotted lines.
24 V DC
COM2
COM1
COM0
Appendix A
COM3
COM4
COM5
24 V DC
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