Help with thcad

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05 Nov 2016 20:42 - 05 Nov 2016 20:49 #82499 by echesortux
Replied by echesortux on topic Help with thcad
Can I see the thc source code of thc comp I have installed in my computer? how can I know what is the version i am using ?
as all condition to correction seem to be ok but z axis doesn't move.

ARC-OK true
TORCH-ON true
THC enable true
vel-status true

I don't know why but i have to set the following in .hal file to get vel-status working

setp thc.velocity-tol 40

here you have a pic to see all values while machine is cutting.
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Last edit: 05 Nov 2016 20:49 by echesortux.

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06 Nov 2016 06:55 - 06 Nov 2016 07:07 #82506 by Rick G
Replied by Rick G on topic Help with thcad
github.com/LinuxCNC/linuxcnc/blob/master.../components/thc.comp
linuxcnc.org/docs/2.7/html/man/man9/thc.9.html

That seems to show a thc.requested-vel of 33.3333
But a thc.current-vel of 25

Are you using the feed override slider to change the speed?
If so be sure to set it at 100%. Setting it too low will cause the THC to not work.


Rick G
Last edit: 06 Nov 2016 07:07 by Rick G.

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06 Nov 2016 20:23 #82517 by BigJohnT
Replied by BigJohnT on topic Help with thcad
Good catch Rick, I just reminded myself that motion.requested-vel is simply the F word that is current and does not take into account any overrides. I need to add a note about that in the Documents.

JT

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