HEIDENHAIN TNC 640 (34059x-02) ISO programming - Manual (Page 465)

Datum setting without a 3-D touch probe 15.5
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TNC 640 | User's Manual for DIN/ISO Programming | 5/2013
465
Activating a datum from the preset table in the Manual
Operation mode
When activating a datum from the preset table, the
TNC resets the active datum shift, mirroring, rotation
and scaling factor.
However, a coordinate transformation that was
programmed in Cycle 19 Tilted Working Plane, or
through the PLANE function, remains active.
Select the MANUAL OPERATION mode
Display the preset table
Select the datum number you want to activate, or
With the GOTO key, select the datum number that
you want to activate. Confirm with the ENT key
Activate the datum
Confirm activation of the datum. The TNC sets the
display and—if defined—the basic rotation
Exit the preset table
Activating a datum from the preset table in an NC program
To activate datums from the preset table during program run, use
Cycle 247. In Cycle 247 you define the number of the datum that
you want to activate (see User's Manual, Cycles, Cycle 247 SET
DATUM).