probing - false triggers during g1 and g0 moves

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28 Nov 2012 01:07 #27004 by jslindsay
I am using a home made probe to do cutter length correction after manual tool changes. If I leave the probe hooked up, the acceleration during machining will sometimes trigger the probe and stop a non probing
( g0,g1,g3 etc.) G code. I had assumed the probe was only active during the G38 straight probe motion but that is obviously not the case. Is there a way to turn off the probe input without resorting to unplugging it each time it is used?

Thanks
John

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28 Nov 2012 01:20 #27005 by ArcEye
Hi

You should be able to unlink whatever you have linked to motion.probe-input and re-connect when required, using a M Code script
See
linuxcnc.org/docs/2.5/html/hal/basic_hal.html#_unlinkp
and
linuxcnc.org/docs/2.5/html/gcode/m-code....d_sec_m100_to_m199_a

regards

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28 Nov 2012 01:54 #27007 by BigJohnT
Or block the input with a switch...

John
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28 Nov 2012 02:35 - 28 Nov 2012 02:48 #27008 by PCW
Which leads to possibly using the 'and' component and a gcode settable bit (say using M62, M63)
to mask the probe input in the gcode when you dont want it to be enabled.
.
Last edit: 28 Nov 2012 02:48 by PCW.
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28 Nov 2012 05:35 #27022 by jslindsay
thanks for the suggestions. I have investigated modifing the hal.ini file to include anding a setable variable. I like simple solutions and adding a toggle switch as John has suggested will work until I get ambitious.

thanks
John

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28 Nov 2012 05:37 #27023 by jslindsay
maybe I should just make a better probe grin

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