PlasmaC torch starting problem (Solved with help from the famous three)

phillc54 wrote:

Clive S wrote: If I understand correctly the array is saved to a different folder than the standard NGC one. I saved the file under a different name to the desktop and edited that, I then shut the PC down and restarted and checked that the G4P15 was in the file on the desktop and opened that file.
Does the PlasmaC purge the G4P15 from the code?

I didn't think it did and I have just tested it here and it works OK.

Thanks for the feedback. I will go out and test again.

Clive S wrote:

phillc54 wrote:

Clive S wrote: If I understand correctly the array is saved to a different folder than the standard NGC one. I saved the file under a different name to the desktop and edited that, I then shut the PC down and restarted and checked that the G4P15 was in the file on the desktop and opened that file.
Does the PlasmaC purge the G4P15 from the code?

I didn't think it did and I have just tested it here and it works OK.

Thanks for the feedback. I will go out and test again.

Yes of course you are correct But I was using pierce only and it was that, that was getting rid of the G4

I have now confirmed that putting a delay of 15 secs in the gcode between the cuts works fine. So the problems is with the plasma cutter.

Clive S wrote: But I was using pierce only and it was that, that was getting rid of the G4

Yes, it only looks for spindle on signals and does it own thing.

That also explains the G1 X 0.000001 you referred to before, LinuxCNC needs to have some motion otherwise it won't turn the torch on.

If you had saved the Pierce Only file then added the G4 codes in then loaded it and run it in Pierce and Cut mode it should work.

phillc54 wrote:

Clive S wrote: But I was using pierce only and it was that, that was getting rid of the G4

Yes, it only looks for spindle on signals and does it own thing.

That also explains the G1 X 0.000001 you referred to before, LinuxCNC needs to have some motion otherwise it won't turn the torch on.

If you had saved the Pierce Only file then added the G4 codes in then loaded it and run it in Pierce and Cut mode it should work.

Yes I now understand what was happening. What this has now shown me is that the G4P15 after the first cut works but it is not good with a 15 sec delay before each cut . This looks like a problem with the cutter not fire-ing until the air stops.

I have tried it with THC off to no avail. So my next move is to have a temporary button to see if the torch will fire manually as the air is still purging (when it is purging the volts are hovering around 0-18 then when the air stops it is rock steady on zero)

Have you tried a long Arc Fail timeout?

phillc54 wrote: Have you tried a long Arc Fail timeout?

What would you call long , 15 secs ?