Skip initial sensing

wasausky wrote:

Hi everyone, I have 3 questions
-How can I omit the initial sensing that the plasma torch does?

Currently there is no way to omit it, you may be able to create a fake ohmic or float pulse with a bit of HAL magic.

-How can I prevent the torch from rising when a problem occurs or simply pauses the program.

Currently there is no way around this.

-Is there a way to move the z axis while the program is paused.

You can use external offsets, this is how plasmac does it, so you would need to do a bit of HAL work to implement it.

linuxcnc.org/docs/devel/html/motion/external-offsets.html

If you can describe what you are trying to achieve we may be able to help.

All of the above can be done by simply using a normal config, not PlasmaC or QtPlasmaC.

A standard/normal config will work just fine, i have several plasma cutters in use with oxy at client sites, all have a normal config for oxy and PlasmaC or my old config for plasma.
The only usable feature would be adding "reverse run" and setting the Z axis in hal to use external offsets and make small adjustment in height during cut. The latter is not important at all for thin sheets, thin being 20-30mm, as several mm in height have no impact on cut quality for oxy.
Adding pause to preheat the material is a s simple as inserting
G04 P900
for 15 minutes of preheat.
Also a G1 Znnn with a slow feed can be added when piercing so the torch lowers slowly to prevent molten metal hitting the nozzle.