Random arc signal lost

Does it have the same issue on float and ohmic?

Maybe try using the lowpass filter.
linuxcnc.org/docs/2.8/html/plasma/plasma...r-guide.html#lowpass
This would be in the <machine-name>_connections.hal.

Edit sorry,that probably won't help as you are using mode 1.
I think you may need to try the Halscope plot so we can see what is happening.

phillc54 wrote:

Halscope plot

*shudders* I guess I have another reason to learn Halscope

snowgoer540 wrote:

phillc54 wrote:

Halscope plot

*shudders* I guess I have another reason to learn Halscope

I know you are trying to put it off but...

phillc54 wrote:

snowgoer540 wrote:

phillc54 wrote:

Halscope plot

*shudders* I guess I have another reason to learn Halscope

I know you are trying to put it off but...

To get a start on things, in this case, I would want to plot the arc-ok signal, and perhaps the voltage of the arc. Would I use the torch on as a trigger?

Yeah, I think that would work

Something else you could experiment with in <machine-name>-connections.hal

Unlink the plasmac Arc OK input .
Add an extra debounce component.
Net the Arc OK signal from the Mesa card to the debounce input and the debounce output to PlasmaC Arc OK .

phillc54 wrote:

Something else you could experiment with in <machine-name>-connections.hal

Unlink the plasmac Arc OK input .
Add an extra debounce component.
Net the Arc OK signal from the Mesa card to the debounce input and the debounce output to PlasmaC Arc OK .

I really need to start writing things down. I had this though on the way to work this morning! I actually thought "I wonder if the Arc-OK is de-bounced". I think the Hypertherm closes a set of dry contacts, so it could be that there needs to be a small debounce before things get under way. Does that mean this stuff is really starting to make sense?!

Ok, I just looked, the Hypertherm definitely closes dry contacts. I wonder if that's the problem?

Could you offset the debounce delay by then making your pierce delay a bit shorter, or maybe it really doesnt matter that much?