Another plasma component...

Phill

Good news, I set the debounce delay to 5 like my system runs and much better behavior. Only one bouncing episode and that was caused by probing into a puddle on the sheet. So 13 tries and 12 successful lines cut! Torch pulse works as it should to get preflow going to clear water off sheet.

I also tested enabling and disabling THC enable from Gcode and it works just fine using a motion.digital-out-xx hal pin. I tried to link everything up in a post_gui_hal file but no go so I had to add a connection line to plasmac_panel.hal. I must be loading the GUI wrong for this to happen but I ran out of time for testing.

Well I am going to have to get a PP going now as want to test with some real work.

Thank you

John

Phill

I fetched this mornings update for the branch. Thanks for moving the tabs. Please see attached screen shoot on my new screen.

Problem. I went to cut a sheet of parts and make video and no joy. Back to same old probing problem, torch goes down and touchs sheet, Ohmic Probe LED comes on, Torch just bounces up and down +/-.005" while Ohmic-Probe LED intermittently changes state. Same response when trying to run a program and when doing a test probe. What do I need to check for? I think the last plasmac.comp I was using yesterday was dated 03 April.

John

Phill

A quick update. Probing with the float switch works as it should. Is this because with the float switch the movement is so much greater(.005" vs .115")?

John

Phill

There is/was no attachment at this end.

I am a very poor coder but it looks to me the difference is that the float switch logic is looking for the float switch offset to not be exceeded and there is no such offset for ohmic probing. I can see how the travel can easily exceed zero_target with no sheet deflection and a bit of debounce.

I know why this wasn't a problem before. I was doing the line test cuts on the skeleton of sheet that I had already cut productions parts out of. So I was testing on a pre warped very flexible piece of material.

John

Phill

I just want a display that isn't jumping around too much.

I am different than most users in that I mostly cut one material and thickness. So if we use the HT rule that you need to hold your cut distance to better than +/-.005" for good cut quality. This is about +/- 6 arcvolts on my system (.070"/74v=.000810811in/v). If you are using standard Duramax consumables you are closer to +/-11v. I find on my system using a THCad card for arc voltage measurement that I get about .1 to .2 scaled volts noise whether I am cutting or not. So for me not seeing any fractions is ok. On the system I built I can only set the arcvoltage to a 1v resolution.

John