Center Spot Sheetcam Post

I only added those G4 Pn lines

Ok, Ill give it a go without them tomorrow and see how it goes on my machine.

Well, I thought I'd post this pic which shows front and back of the donuts with the spotting function and front and backs of a part spotted with my normal wait until ArcOk method. Front sides are on the left.



The holes are much more evenly shaped (eg more circular).

When thinking about it, simply turning on torch for a fixed period is too simplistic because some relays in use will be very slow. I think some opto isolated relays have a 600 ms on delay. So the delay needs to commence from when the arc has been sensed by the THCAD. Therefore, this feature can't be used by Promas etc and will require a THCAD.

It might be able to be offloaded to my ohmic sensing component if you wanted to keep Plasmac more generic

I could do an experimental plasmac component that works on voltage sensing and uses Ark OK as a failsafe if you guys are willing to test it. It won't affect anything on an existing config, the only difference is that the Torch On Time would then be volts. If it works then folk with Promas could use it by ad justing the low level of the Arc OK.

Sounds like something worth trying, Let me know when you need it tested.

phillc54 wrote: I could do an experimental plasmac component that works on voltage sensing and uses Ark OK as a failsafe if you guys are willing to test it. It won't affect anything on an existing config, the only difference is that the Torch On Time would then be volts. If it works then folk with Promas could use it by ad justing the low level of the Arc OK.

To late at night to think hard! Willing to test, but could we also be able to disable the feature maybe by setting an external plasmac.spot-disable pin? And call the GUI field "Spot Threshold" so it could be volts or milliseconds

I am thinking that my ohmic sense component knows when the Arc is on (> 24.5 volts). So if it received spindle.2.on, it could wait until it had an arc and then count down the delay and turn it off. It would just need to have an output or2'ed with the torch on relay output. I can do that by unlinking pins in hal so it does not affect any Plasmac defaults. A proma user who chose to use a THCAD for ohmic sensing could still use the timer feature....