For PhillC regarding PlasmaC and Z axis stuff

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25 Apr 2020 08:25 #165502 by tommylight

Yeah, I can't see any thing wrong at the moment.

I think it is a good idea to set your G54 position at the Z minimum, that way your DRO always shows the relative height above the Z minimum.

I did not set G54 or any offsets. Maybe that removes the issue and that is a nice solution, and i will test that just after i get some coffee in me, as i have the test setup on the bench. And i do recall you mentioning to do a touch off. Back in a few.

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25 Apr 2020 09:01 #165510 by tommylight

Could you post an ini file that plays up and I will have a look.

Will do so, just doing some more tests.
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25 Apr 2020 09:54 #165516 by tommylight
Linuxcnc 2.9 build 1610 :
No touch off !
Z axis ini settings: -20mm

Config panel settings: Probe height = 20 , safe height = 30

Result = Error on probe test.
Same ini, config settings changed to: probe height = 30, safe height = 45
Result with 3mm thick material = no error.
Result with 10mm thick material = error on probe.
Same ini, config settings changed to: probe height = 40, safe height = 50
Result with 10mm thick material = no error, safe traverse height has been reduced.
-
Set the min_limit to 0 for the Z axis, go to slats to home, press home, error :

To recover, press F1, then again F1 and F2.
If by any chance it gets to 0 value on the Z axis during jogging, it will trip limit error, notify about fixing limits and restart, so not motion is possible, a restart of Linuxcnc is required.
-
With touch off just above the 3mm material, ini min_limit at 0, config probe height at 20 and safe height at 35 = works OK.
With touch off just above the 10mm material, ini min_limit at 0, config probe height at 20 and safe height at 35 = works OK.
Unfortunately i can not reproduce an error i got twice last night where is would stop all motion, error out ( do not recall the exact error ) and a restart of Linuxcnc would be required.
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25 Apr 2020 09:56 #165517 by tommylight
Attached is the config in zip form.
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25 Apr 2020 10:00 #165519 by phillc54
Thanks Tom, I will digest all that tomorrow, I am digesting wine at the moment...
A quick look at the ini shows different values for the axis and joint max limits, I don't know if that causes any problems.
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25 Apr 2020 10:22 #165523 by tommylight

I am digesting wine at the moment...

Enjoy it !

A quick look at the ini shows different values for the axis and joint max limits, I don't know if that causes any problems.

I am aware, it does not get to 60mm ever while testing.

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25 Apr 2020 10:42 #165524 by bbsr_5a
i made a hard block ending at part Z height so it cand move deeper at all while the controll can go to table height
the Nema 17 at Z wont make a damage at blockend when thc likes to go down more just oversteps

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25 Apr 2020 10:42 #165525 by phillc54
Some similar issues here to the other thread today ..

When you had z minimum at -20 do you know where the torch was in relation to the slats when you jogged z fully down.


Set the min_limit to 0 for the Z axis, go to slats to home, press home, error :

Did you jog Z down for this.

I don't suppose you know what he original g54 offset was before you did the touchoff.

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25 Apr 2020 10:49 #165527 by bbsr_5a
at some time i wars thinking of getting a user Mcode or nc file started on Reference finish
to set things intirer to the known behaviors
but it is there alredy as it touched the ref switches only the new Material omic sence does a new G54 z set and then i can start from the Sheetcam zero fixed to the mashine sheet zero place

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25 Apr 2020 11:09 #165530 by tommylight

When you had z minimum at -20 do you know where the torch was in relation to the slats when you jogged z fully down.

Just a bit under the top of the slats, or table in this case, about 3mm.

Did you jog Z down for this.

Yes.

I don't suppose you know what he original g54 offset was before you did the touchoff.

No offset, machine 0 at G54 0.
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