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Originally Posted by James Lightfoot
...A-B 42EF–D1MNAK–A2 (NPN Diffuse)...
I am bring the White wire into the signal pin (pin 1). I am not using the center pin (pin 2). Pin 3 is tied to the DC Common bus.
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There's no need to connect the (-) pin on the Digital I/O port. SIG alone will be sufficient. The sensor's blue wire going to a black Wago terminal on the Power Distribution Board is good enough to provide the path for the sensor's output to be pulled low. Having the extra connection to the Digital Sidecar isn't likely to break anything, but it's an unnecessary wire.
Quote:
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Being a sourcing input/output, I think we need to tie the White or Black Wire to a GPIO's pin 1. Please verify whether I am right or wrong.
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The connection you describe is correct. However, the NPN part is a
sinking output. It won't source current.