This is a DIY THC that I built based on the unit designed by Swolebro, so there is no Vendor instructions to refer to. I'm doing the THC testing with the plasma torch not running just to try save wear and tear on the consumables. So, the torch voltage signal is coming from an external supply. Yesterday I verified that when in THC mode (led next to THC button is green), the tool path won't execute until Torch On is asserted. If Torch On is hardwired asserted the tool path executes fine. Also yesterday I found that the number shown in the "Curr." window will tick up negatively when the Torch Down signal is present, during tool path execution. This would indicate that some portion of the Mach3 THC function is executing. However, there is still no correction to the Z position regardless of a Torch Up or Torch Down signal.
Any suggestions as to what I'm doing wrong, or not doing?