Drill operation won't fire torch and set feedrate to 100

Problems and questions
1

Sheetcam 7.1.35 on LinuxCNC

Post processor: PlasmaC (Also tried LinuxCNC PlasmaC pp as well)

Drill operation wont fire torch and feed rate is default to 100mm/min

Please help. thanks.

roofAnchor.tap (2.6 KB)

2

Does that post processor have an OnDrill function? If not, that would explain why it isn’t working. You might have to find a similar post that has this function and copy it. I’m not sure what code you need to have.

3

yes, the PP has ondrill() function

4

both of those pp use identical OnDrill() functions, so not surprising they yield same results. I’m not well versed on LinuxCNC but based on the .tap file you posted, it doesn’t seem to be a Sheetcam bug. The pps are coded to produce M3 and M5 with arguments, normally that is torch ON and OFF.

I believe you need an expert on LinuxCNC to answer this one, and then perhaps an adjustment to either of the pps.

5

Problem solved.

  1. in QTPlasmaC, from “parameters”, need to set “Threshold” and TimeOn" under “Spotting”.

  2. feedrate “100” problem solved by restarting all programs;) I read someone had same problem over linuxcnc forum, but Les couldn’t reproduce the issue. Anyway, good for now.

6

Plasmac has a different method of drilling than most systems. Please read the manual. When set up, the torch is turned off before an ArcOK is received to allow for finer spotting. If the time delay is too short, spotting is ignored (Because the torch is not turned on in time). This is machine specific and also your choice of relays are a factor.