Homing To Index Following Error
- Todd Zuercher
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31 Mar 2026 10:20 - 31 Mar 2026 10:22 #344990
by Todd Zuercher
Homing To Index Following Error was created by Todd Zuercher
I have a 4 axis router with step/dir servos using a 7i76EU+7i85 to command the servos and read the encoder feedback. I have the servos reasonably tuned running closed loop. But I'm seeing a following error spike on homing to index for the W axis (XYZW) on the first attempt at homing the machine after power up. After the initial encoder position reset on the homing index it will home fine the 2nd try and works after that. If the machine was parked at the W-zero location when Linuxcnc is turned off and started it does not do the following error. For some reason it seems like Linuxcnc is not ignoring the F-eror on the encoder index reset for the W-axis like it should. Any Ideas how to fix this?
Here are my main hal and ini config files.
Here are my main hal and ini config files.
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Last edit: 31 Mar 2026 10:22 by Todd Zuercher.
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31 Mar 2026 10:24 #344991
by Todd Zuercher
Replied by Todd Zuercher on topic Homing To Index Following Error
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31 Mar 2026 11:15 #344992
by Todd Zuercher
Replied by Todd Zuercher on topic Homing To Index Following Error
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31 Mar 2026 18:20 #345000
by PCW
Replied by PCW on topic Homing To Index Following Error
What LinuxCNC version is being run?
There was an encoder index bug fixed Nov 2022:
github.com/LinuxCNC/linuxcnc/commit/6bf6...afbf95c84f4fbb44f138
There was an encoder index bug fixed Nov 2022:
github.com/LinuxCNC/linuxcnc/commit/6bf6...afbf95c84f4fbb44f138
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