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General Mach Discussion / Re: Thc disable when cutting holes , cnc plasma
« on: May 25, 2020, 10:18:09 PM »
Hello,
I am having a similar problem
Mach3+sheetcam+WinXP+Proma150
Mach3 is constantly resetting the Z height from THC corrections. so the program cycle pierces lower and lower until it crashes into material. I do not use a touch off, only torch up/torch down, i need the other pins for other things. The odd thing is I have been plasma cutting with the same setup for years without this issue. Several separate setups. Just this setup its now an issue. All I want to do is disable the THC corrections from resetting the Z height, so it pierces same programmed z every time regardless of THC corrections. I cant work out if mach 3 is obeying on pierce or during cut or end of cut. The non THC post in sheetcam has always worked using Proma as I knew this post doesn't reference height during cutting.
I am having a similar problem
Mach3+sheetcam+WinXP+Proma150
Mach3 is constantly resetting the Z height from THC corrections. so the program cycle pierces lower and lower until it crashes into material. I do not use a touch off, only torch up/torch down, i need the other pins for other things. The odd thing is I have been plasma cutting with the same setup for years without this issue. Several separate setups. Just this setup its now an issue. All I want to do is disable the THC corrections from resetting the Z height, so it pierces same programmed z every time regardless of THC corrections. I cant work out if mach 3 is obeying on pierce or during cut or end of cut. The non THC post in sheetcam has always worked using Proma as I knew this post doesn't reference height during cutting.