Sometimes we can't tell the way of wiring PLC, especially how to connect the proximity switch and OMRON PLC is a problem, then today Xiaobian will explain how to best wiring.
DC two-wire type: the brown line is connected to the PLC input point, the com point of the PLC is connected to the positive pole of the power supply, and the negative pole of the power supply is connected to the blue line.
NPN type: brown is connected to the power supply, blue is connected to the power supply, the black line is connected to the PLC input point, and the com point of the PLC is connected to the power supply. The NPN is a leaky type that outputs a low level signal when an object is detected.
PNP type: brown is connected to the power supply, blue is connected to the power supply, the black line is connected to the PLC input point, and the com point of the PLC is connected to the power supply. The PNP is a source type that outputs a high level signal when an object is detected.
Figure:
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