HEIDENHAIN TNC 640 (34059x-01) - Manual (Page 348)

348 Programming: Special Functions
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FUNCTION PARAXCOMP DISPLAY
Use the PARAXCOMP DISPLAY function to activate the display function
for parallel axis movements. The TNC considers the traverse
movements of the parallel axis in the position display of the associated
principal axis (sum display). Therefore, the position display of the
principal axis always displays the relative distance from the tool to the
workpiece, regardless of whether you move the principal axis or the
minor axis.
Proceed as follows for the definition:
U Show the soft-key row with special functions
U Select the menu for defining various plain-language
functions
U Select FUNCTION PARAX
U Select FUNCTION PARAXCOMP
U Select FUNCTION PARAXCOMP DISPLAY
U Define the parallel axis whose movements the TNC is
to take into account in the position display of the
associated principal axis
Example: NC block
13 FUNCTION PARAXCOMP DISPLAY W