HEIDENHAIN IK 5394-3D - Manual (Page 530)

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Chapter 6 System Setup
Sharing axes
When machine motion axes outnumber
joystick axes, the Z and Q axes can be shared
with the X and Y axes using buttons on the
digital positioner as diagrammed in this
example of sharing the Z axis.
NOTE
Refer to the description of the
Tools/Options/Buttons screen for
details regarding the configuration
of digital positioner buttons.
To share the Z axis:
1 Enable the Z axis.
2 Select the axis with which to share the
Z axis.
3 Assign Swap Z Joystick to a button of the digital positioner using the Tools/
Options/Buttons screen.
The process shown above can also be used to share the Q axis.