Z axis

Alright so after taking a couple days off. I’m back
I started from a very beginning.
Installed a Linux mint 19.2 Linuxcnc Build , pulled from the forum.
I build my working base configuration.
Moved to plasmaC
I build my asxis plasmaC configuration and when inputting required information I selected mode 1.
Next I began the adding of the THCAD lines in the hal file. But also comments out everything pertaining to mode 1 and switch to mode 0. I Homed machine imputes my offset and scale info
Resting voltage is ready zero
Opened up imperial_squares.ngc file a
Set my plasma cuttter to 30 amp at 110 ipm
Cutting Voltage was was 93 ish on screen .
Made lots of progress, couple questions
Machine stop after first cut and got “valid arc lost program is pause”
What do I do for that?
Second I’m 1/16 of an inc , 1.5875mm , on the small size off I measure the cut square. Do I go up or down on the axis tunning?

Have you done some probe tests to confirm the heights are correct?

Could the size difference be due to kerf width?

I took a quick peak this before leaving for work this morning at My machine torch, it appears it is kicked in just a little bit, I’m thinking that’s where I am loosing my 1/16 in my cuts I will try correcting that tonight.
As far as for probe testing, I did hit the probe test button before my cuts yesterday. This morning I jog the z axis all the way to the bottom, hitting the sheet metals, I jog up 1 inch on screen, measure physically and it’s 1 inch , jogged 2 inches on screen and physically re measure and I’m getting what seems to be consistent accurate measurements when jogging the z axis.
At lunch I’m going to do some re reading the manual again. I might be missing something.
Last think to me it appears that the GUI configuration of axis move slower then gmoccapy. Is that just in my head?

Axis motion should be the same.

For imperial_circle ngc or imperial_square.ngc
When I cutting it will cut the first part but when It moves to second cut I get error message of “valid arc lost program is paused”
Any suggestions?

motal2004 wrote: For imperial_circle ngc or imperial_square.ngc
When I cutting it will cut the first part but when It moves to second cut I get error message of “valid arc lost program is paused”
Any suggestions?

Video, and hal scope trace of arc voltage, what mode are you using ?