I have built a 4ftx8ft plasma table from scratch and everything so far has been working great except the torch height controller function in mach3. All ports/pins are setup correctly and diagnostics screen shows arc okay, torch up and torch down signals working correctly.
I am using the nvem v2 controller and pricecnc thc connected to my hypertherm 1250. Voltage readings are correct and its sending torch up/down/arc okay signals no problem while running some cuts. The Z axis just simply is not moving from torch up/down signals. I have tried emulating signals with keyboard as a test and still no movement. Page up/down jogging z axis works fine and my g code probes the work surface at start of every cut no issues. The arc okay signal does work. with plasma cutter tuned off G code will wait for arc okay before proceeding.
I have tried enable/disable "allow THC UP/DOWN Control even if not in THC Mode" and it makes no changes. If i enable "set OUTPUT5 when in THC" output 5 does toggle on when i switch on the THC enable button. Running in mm and THC max = 20mm minimum = -2mm. THC Speed = 20.
I'm sure its something simple I have missed but don't have much experience with this software yet. Would greatly appreciate any help you may be able to offer. You can see a video of my setup here:
https://www.youtube.com/watch?v=RcUxoCZ0VbE