5i25 -Lathe spindle index pulse not indicating
- bill.anderson
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24 Feb 2022 20:44 #235743
by bill.anderson
5i25 -Lathe spindle index pulse not indicating was created by bill.anderson
I recently built a single pulse ckt board to send a 5v pulse/rev back to Linuxcnc 2.8 to experiment with threading on my lathe.
I built my configuration using Pncconf. Everything worked except that no spindle speed was observable. I linked the actual pulse to the index and also to ENCA. After poring through the forum and the HAL manual I finally admitted that something probably simple is escaping me. So if anyone could let me know what I am missing or point me in the right direction I would be forever grateful.
I have attached my HAL and INI files
thanks
bill a.
I built my configuration using Pncconf. Everything worked except that no spindle speed was observable. I linked the actual pulse to the index and also to ENCA. After poring through the forum and the HAL manual I finally admitted that something probably simple is escaping me. So if anyone could let me know what I am missing or point me in the right direction I would be forever grateful.
I have attached my HAL and INI files
thanks
bill a.
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24 Feb 2022 21:00 - 24 Feb 2022 21:15 #235744
by PCW
Replied by PCW on topic 5i25 -Lathe spindle index pulse not indicating
This will not work because the hardware encoder does not provide
interpolated positions.
You could add a software encoder to do this, but 1PPR threading
is critically dependent on speed stability, since it is estimating the
position for a whole turn from the last velocity calculated.
interpolated positions.
You could add a software encoder to do this, but 1PPR threading
is critically dependent on speed stability, since it is estimating the
position for a whole turn from the last velocity calculated.
Last edit: 24 Feb 2022 21:15 by PCW.
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