Hi Hood,
I have a question:

Exploring Mach3 Ports&Pins Setup, in Input pins section I see input pin for THC On. But in Mach3 guide (sample schematic of THC) there is no output witch can be mapped to this input.

On the other hand, there is Disable input to THC schematic . Where it should be connected? And how configured?

I'm confused about, please detailed explanation.
Mrpeja