CSMIO/IP-M - wiring sanity check needed

[Neale]

Simple answer is that the CSMIO is designed for more sophisticated machines than a typical home-built router. Doing it this way means that you could use entirely separate power supplies for the CSMIO itself and for the external switch inputs. You probably don't want to, but you could. I use a CSMIO/IP-M myself partly because it means that you can use 24V external switching which is pretty much an industry standard and is much more resistant to external noise and false triggering. For example, I run limit switch, stepper motor, and VFD cables through the same cable chain and have never had a problem.

I have had and still do have CSMIO-related problems but I think that this is entirely due to the somewhat flaky interface between Mach3 and the CSMIO plugin which has needed a bit of care to make work at all reliably. No experience with Mach4, though.