Omron CPM2C Operation Manual page 74

Input Devices
Device
Relay output
NPN open collector
NPN current output
PNP current output
Voltage output
The following table shows how to connect various input devices.
5 mA/6 mA/8 mA
Output
5 mA/6 mA/8 mA
0 V
Constant
Output
current
circuit
5 mA/6 mA/8 mA
0 V
5 mA/6 mA/8 mA
Output
0 V
Output
0 V
Note Do not use the following wiring with voltage-output devices:
Incorrect Wiring
Output
0 V
Circuit diagram
Sensor
power supply
+
Sensor power
supply
Sensor power
supply
Sensor power
supply
IN
COM(+)
Section 3-4
IN
CPM2C
COM (+)
IN
CPM2C
COM (+)
Use the same power supply for
the input and sensor.
IN CPM2C
COM (+)
IN CPM2C
COM (--)
COM (+)
CPM2C
IN
CPM2C