Tool length sensor and touch probe with Mesa7i76e

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7 years 8 months ago #126758 by vmihalca
There is something that I don't understand.
I am using gmoccapy with probescreen.
Using the touch probe with probescreen I have managed to probe a part height and corner.
But I don't know how to use the tool length sensor.
If both the touch probe and tool length sensor are connected to the same motion.probe-input, how does the linuxcnc knows when to consider one and when to consider the other?

I have seen that in the tool table, I have the option to measure tool length, I assume that one should know about the tool height sensor.

I am really beginner with these so there are many missing puzzle pieces.. :)

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7 years 8 months ago - 7 years 8 months ago #126767 by Todd Zuercher
Actually Linuxcnc does not see any difference between them. The same input is used (usually) for both. The difference between the two is what Linuxcnc does with the numbers it gathers from the probing and how they are used. (it is all in how the G-code and user-interface is programed.)
Last edit: 7 years 8 months ago by Todd Zuercher.

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7 years 8 months ago #126783 by rodw
In a similar but related situation, I wanted to disable the probe wile I was not probing on a plasma cutter so I set a motion.digital-out-nn pin in gcode when I was probing and XOR2'ed it with the 7i76e input so it was ignored unless we were probing. You might be able to extend this technique to specify the probe type.

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7 years 8 months ago #126836 by vmihalca
Hi Guys,
I have started using gmoccapy and I have an issue loading the tool from the tool editor page or from mdi using M6 T2 G43.
I get the following error:
Linear move on line -1 would exceed Axis Z positive limit.

Could you please give me some hints on this?

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7 years 8 months ago #126839 by Leon82
Double check your work offset. It sounds like you have a positive value. Possibly in the g92

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7 years 8 months ago #126860 by vmihalca
I will test today once I reach my shop.
Just as a confirmation, the workpiece coordinates are stored in g54, and for Z I should have a value smaller than the Z of my tool. I'm I right?
I'm quite beginner so this is quite new to me.

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