Wiring: Digital Signals
Can be different depending on the hardware that is being used
- Some PLC’s have prewired harnesses that are provided
- In which case you will only have to wire the terminal block side of the signal
- Sometimes you must wire both the PLC and the terminal block side
Wire size can vary depending on signal types.
- Typically use between 16awg to 24awg
Read PLC hardware manual to get a clear understanding of how the circuits should be wired
- This can very greatly depending on manufacturer
- Land power correctly and Neutral or DC- correctly to ensure a proper loop
It is a good idea to have some kind of disconnect or fused protection on each signal so that you can isolate that signal if necessary
- In this case we have used fused protection
Make sure to take time as each termination is made to not fray or “birdcage the wire in anyway
If Jumpers are being used to distribute power, make sure that each terminal the jumper is being inserted into is secured if necessary
Reference the drawings often through the process to ensure that nothing is missed, and each signal is being wired correctly.
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