Hi to all,

First thanks for your time and help.

I started to make a new controller box for migrate from GRBL to CSMIO IP/M and i have one doubt and i don't want to try things without understand it.

I have one simple touch plate with a clamp for a bit, but I'm afraid of make a bad use.
The problem i have I'm afraid of use pins IN 12 (11+ input pin) and IN25 (11- input Pin) with the chassis/spindle because are grounded to house earth and i don't know if this is possible.



I put this little schematic if someone can confirm how i need to wire the touch plate with clamp (or chassis without clamp) and confirm the pins used.

This thing it's the only i need for finish the controller box and continue to use my cnc.

Thanks to all i really appreciate your help and experience. 

Cs-Labs have connection diagrams on the site.

https://en.cs-lab.eu/tool-length-sensor-gnd-on-a-machine/

Thanks for your help,

It's necessary use second 24v PSU?