CNC AXIS IN PARKING MODE
- papagno-source
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20 Nov 2025 19:01 #338821
by papagno-source
CNC AXIS IN PARKING MODE was created by papagno-source
Good morning everyone.
I need to replace an old Siemens CNC.
I'd like to try Linux CNC, but the machine is a boring machine with a Z-axis that can be controlled manually or via CNC.
Let me explain. The Z-axis performs normal axis reference and moves in jog+ and jog- directions, with the position controlled by an optical scale.
However, the operator can press a mechanical selector, which allows the axis to be moved with a mechanical handwheel and, when desired, re-engage the axis in the CNC.
Clearly, the current CNC disables the axis drive when the mechanical handwheel is selected.
The axis on the current CNC goes into park mode, meaning the commanded position follows the feedback position, and when the mechanical handwheel is disengaged, the CNC does not enter a following error.
With Linux CNC, I could disable the drive and move the axis with the mechanical handwheel, but as soon as I disable the handwheel and enable the drive again, the CNC displays the following error because the commanded position doesn't follow the feedback position.
Is there a way to mimic the behavior of the Siemens CNC?
Thanks for support
I need to replace an old Siemens CNC.
I'd like to try Linux CNC, but the machine is a boring machine with a Z-axis that can be controlled manually or via CNC.
Let me explain. The Z-axis performs normal axis reference and moves in jog+ and jog- directions, with the position controlled by an optical scale.
However, the operator can press a mechanical selector, which allows the axis to be moved with a mechanical handwheel and, when desired, re-engage the axis in the CNC.
Clearly, the current CNC disables the axis drive when the mechanical handwheel is selected.
The axis on the current CNC goes into park mode, meaning the commanded position follows the feedback position, and when the mechanical handwheel is disengaged, the CNC does not enter a following error.
With Linux CNC, I could disable the drive and move the axis with the mechanical handwheel, but as soon as I disable the handwheel and enable the drive again, the CNC displays the following error because the commanded position doesn't follow the feedback position.
Is there a way to mimic the behavior of the Siemens CNC?
Thanks for support
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