With the Additive offset (M-CS) function, you can shift the zero position of a machine axis in the machine coordinate system M-CS. You can use this function, for example, on large machines, to compensate an axis when using axis angles.
Application
Related topics
- Machine coordinate system M-CS
- Difference between basic rotation and offset
Machine coordinate system M-CS
Description of function
The control adds the value to the active axis-specific offset from the preset table.
If you activate a value in the Additive offset (M-CS) function, the zero position of the affected axis changes in the position display of the Positions workspace. The control assumes a different zero position of the axes.
Application example
The travel range of a machine with AC fork head is increased using the Additive offset (M-CS) function. An eccentric tool chuck is used and the zero position of the C axis is shifted by 180°.
- Initial situation:
- Machine kinematics with AC fork head
- Use of an eccentric tool chuck
- The machine parameter presetToAlignAxis (no. 300203) for the C axis is set to FALSE
The tool is clamped in an eccentric tool chuck outside the center of rotation of the C axis.
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Notes
- After having activated an additive offset, reset the workpiece preset.
- In the optional machine parameter presetToAlignAxis (no. 300203), the machine manufacturer defines for each axis how the control interprets offsets for the following NC functions:
- FUNCTION PARAXCOMP
- FUNCTION POLARKIN (option 8)
- FUNCTION TCPM or M128 (option 9)
- FACING HEAD POS (option 50)
Defining behavior when positioning parallel axes with FUNCTION PARAXCOMP
Machining with polar kinematics with FUNCTION POLARKIN
Compensating for the tool angle of inclination with FUNCTION TCPM (option 9)