The Additive offset (M-CS) function
Application
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 correct an axis when using axis angles.
Related topics
- Machine coordinate system M-CS
- Difference between basic rotation and offset
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 tool is clamped in an eccentric tool chuck outside the center of rotation of the C axis.
- The machine parameter presetToAlignAxis (no. 300203) for the C axis is set to FALSE
To increase the traversing distance:
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Notes
- After having activated an additive offset, reset the workpiece preset.
- The machine manufacturer uses the optional machine parameter presetToAlignAxis (no. 300203) to define for each axis how the control is to interpret offsets in the following NC functions:
- FUNCTION PARAXCOMP
Defining behavior when positioning parallel axes with FUNCTION PARAXCOMP
- POLARKIN (#8 / #1-01-1)
- FUNCTION TCPM or M128 (#9 / #4-01-1)
Compensating the tool angle of inclination with FUNCTION TCPM (#9 / #4-01-1)
- FACING HEAD POS (#50 / #4-03-1)