Using a servo as a spindle and positional axis - keep getting vague errors

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04 Apr 2025 04:11 #325652 by ffffrf
cofhal - I will look at your files now, I did have another idea as well - could i simply use two stepgens? one for step.dir for spindle and another one for the "C" axis? and have a mesa output pin switch a dpdr relay to simply alter where the same motor gets the input?

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04 Apr 2025 04:49 - 04 Apr 2025 04:50 #325657 by ffffrf
one more question before i forget: what issue could be encountered by having a different model of servo driver? Given that you are driving both the spindle and c-axis both with step/dir signals, you just need a driver that can output step/dir, right?
Last edit: 04 Apr 2025 04:50 by ffffrf.

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04 Apr 2025 15:57 #325690 by COFHAL
my email is cofhal.and.gmail.com , send the manual

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04 Apr 2025 15:58 - 04 Apr 2025 16:10 #325691 by COFHAL
There's no need to use the same servo motor for both, but keep in mind that for it to work, you must connect the servo motor's encoder feedback. I believe your servo motor has a 2,500-pulse encoder. I can help you configure it with the manual.

youtube.com/shorts/neoFkCpddyE?feature=share
Last edit: 04 Apr 2025 16:10 by COFHAL.

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04 Apr 2025 16:13 #325693 by COFHAL
I think it would be a bad idea, since you could use the same servo motor for both functions.

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04 Apr 2025 17:19 #325697 by Aciera
@COFHAL

Have you ever used spindle synchronized motion (eg G33 or G33.1) with the config you posted above?
Just wondering if you are also affected by the erratic behavior bug described here:
forum.linuxcnc.org/38-general-linuxcnc-q...blem?start=20#324268

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04 Apr 2025 23:21 - 04 Apr 2025 23:24 #325721 by ffffrf
EDIT: for your email did you mean This email address is being protected from spambots. You need JavaScript enabled to view it.? I tried This email address is being protected from spambots. You need JavaScript enabled to view it. but that did not show a registered address. I sent it to This email address is being protected from spambots. You need JavaScript enabled to view it. but I can resend if its something else.


I will make sure to update this thread if I do end up solving this for anyone else interested.
Last edit: 04 Apr 2025 23:24 by ffffrf.

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