Omron NX-ID User Manual page 117

This is the wiring for three-wire sensors.
Three-wire sensor
+
Output
0V
PNP Type Input Units
This is the wiring for contact output type external devices.
Contact output
NX-series Digital I/O Unit User's Manual (W521)
IOV
Communications Coupler Unit or
Additional I/O Power Supply Unit
IOG
IOV
IN
DC Input Unit
IOG
IOV
Communications Coupler Unit or
Additional I/O Power Supply Unit
IOG
IOV
DC Input Unit
IN
IOG
4 Installation and Wiring
4
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