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  • richcolvin
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15 Oct 2025 03:52
Replied by richcolvin on topic M19 for Indexing a Spindle using Stepper Motors

M19 for Indexing a Spindle using Stepper Motors

Category: General LinuxCNC Questions

Thank you Peter.  I reviewed the link you provided, but is there a document or manual which describes how to set this up?
  • PCW
  • PCW's Avatar
14 Oct 2025 21:06

M19 for Indexing a Spindle using Stepper Motors

Category: General LinuxCNC Questions

www.linuxcnc.org/docs/html/gcode/m-code.html#mcode:m19

Says:

Spindle orientation requires a quadrature encoder with an index to sense the spindle shaft position and direction of rotation.

The need for an encoder can be worked around by using a StepGen with the index feature but that would still require
a once per turn signal for initial alignment.
  • richcolvin
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14 Oct 2025 20:13

M19 for Indexing a Spindle using Stepper Motors

Category: General LinuxCNC Questions

I am trying to use the M19 command:

m19 r90 q10 p1 $0

The m3 & m4 commands work as expected, but m19 does not.  Any guidance would be greatly appreciated.

My HAL and INI files are attached (Spindle0.inc renamed to be Spindle.inc.ini so that it could be attached).
  • richcolvin
  • richcolvin's Avatar
08 Oct 2025 19:20
Replied by richcolvin on topic Stepper Motor Speed is too slow

Stepper Motor Speed is too slow

Category: Basic Configuration

These are the files.  The .INC files were renamed to be .INI so that they could be attached.

I've attached one spindle file:  that one and the one for Spindle1 all work exactly as expected.

I also attached only two of the axis files:  U & Y (due to the file limit).
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