rotary axis queston
- acourtjester
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09 Apr 2025 17:44 #326000
by acourtjester
rotary axis queston was created by acourtjester
HI
I am wanting to add an optional rotary function to my table, to have a tubing cutter. With another controller and software I just switched the Y axis control output cable to the rotary axis motor. This is also the way it is done with my desktop laser to use its rotary optional drive assembly.
On my table I and using LinuxCNC software with a Mesa 7I76E card and QTPlasmaC GUI. I have tried to leave out the Y home/limit entry in the pncconf setup, but it will not enable the Y axis. I understand the need to do the homing operation so the software knows where it is for running a G-code. After the homing I can position any axis to a location and then zero out the DRO and use that as a start position for the G-code.
What I want is the Y axis not needing to home to be active. This would allow me to home X and Z and position the Y to a zero position manually.
Thanks for your time
Tom V
I am wanting to add an optional rotary function to my table, to have a tubing cutter. With another controller and software I just switched the Y axis control output cable to the rotary axis motor. This is also the way it is done with my desktop laser to use its rotary optional drive assembly.
On my table I and using LinuxCNC software with a Mesa 7I76E card and QTPlasmaC GUI. I have tried to leave out the Y home/limit entry in the pncconf setup, but it will not enable the Y axis. I understand the need to do the homing operation so the software knows where it is for running a G-code. After the homing I can position any axis to a location and then zero out the DRO and use that as a start position for the G-code.
What I want is the Y axis not needing to home to be active. This would allow me to home X and Z and position the Y to a zero position manually.
Thanks for your time
Tom V
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- tommylight
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09 Apr 2025 18:40 #326006
by tommylight
Replied by tommylight on topic rotary axis queston
Usually omitting or deleting lines with HOME_...._velocity in the ini file and editing the homing and limit lines in hal is all it takes, but first:
-is the Y axis single drive/motor or tandem?
-is the Y axis the right choice for your use case? I usually do X axis as rotary.
-upload the hal and ini file so we can have a look.
-is the Y axis single drive/motor or tandem?
-is the Y axis the right choice for your use case? I usually do X axis as rotary.
-upload the hal and ini file so we can have a look.
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- andypugh
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11 Apr 2025 14:56 #326069
by andypugh
It's usual to retain the lines, but set the two velocities to zero. Omitting probably works too (they will default to zero) but actively setting to zero looks less like a mistake.
Replied by andypugh on topic rotary axis queston
Usually omitting or deleting lines with HOME_...._velocity in the ini file and editing the homing and limit lines in hal is all it takes,
It's usual to retain the lines, but set the two velocities to zero. Omitting probably works too (they will default to zero) but actively setting to zero looks less like a mistake.
The following user(s) said Thank You: tommylight
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