Project Beaver

[Neale]

With the CSMIO-IP/M, I suggest NPN N/C proximity sensors. I'm in the middle of setting up these on my own machine, and they seem to work well. I've actually chosen to use two sensors per axis as it fits my design more easily, and these sensors work OK if you need to connect two on the same axis to the same IP/M input (although the IP/M does have plenty of inputs). Putting X, Y, and Z limit/home switches as one axis per input gives you the minor benefit of being able to home more than one axis simultaneously, although typically you would home Z first to raise it out of the way, and then home X and Y together.