HEIDENHAIN ITNC 530 - PILOT SMART NC Manual page 140

The following plane definitions are available:
Type of plane definition
Plane defined by spatial angle
Plane defined by projection angle
Plane defined by Euler angle
Plane defined by vector
Plane defined by three points
Define an incremental spatial angle
Define axis angles (FCL3 function)
Reset the tilted plane function
You can use soft keys to switch the positioning behavior, the selection of
the tilt direction and the type of transformation.
The type of transformation is effective only in
transformations with a C axis (rotary table).
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Soft key