Omron NXR Series User Manual page 75

Two-wire
sensor
Three-wire
sensor
PNP type
The power +(V) to pin 1 is supplied from the IO-Link Master Unit through the IO-Link cable to the
Digital I/O Hub.
 Wiring Example for an Output Device and Three-wire Sensor
This wiring example shows the Digital I/O Variable Hub whose pin 4 of port 1 serves as an output
and whose pin 2 of port 1 serves as an input.
Three-wire
sensor
PNP type
L
Output device
The power +(V) to pin 1 is supplied from the IO-Link Master Unit through the IO-Link cable to the
Digital I/O Hub. The output power that provides load current is supplied from the IO-Link Master
Unit through the IO-Link cable to the Digital I/O Hub.
Precautions for Correct Use
If you use a inductive load (solenoid valve, etc.), use a device with built-in diodes for absorbing
counter-electromotive force, or externally install the diodes. Refer to A-3 Wiring Precautions for
External Output Signal Lines on page A-5 for details.
NXR-series IO-Link I/O Hub User's Manual (W620)
I1 or IO1
2
V
1
3
4
I0 or IO0
G
Digital I/O Hub
with inputs
IO1
2
V
1
3
4
IO0
G
Digital I/O Hub with an
input and an output
5 Installation and Wiring
I/O connector
I/O connector
5
5-15