HEIDENHAIN TNC 620 (81760x-02) ISO programming - Manual (Page 458)

Manual operation and setup
14.5 Datum management with the preset table
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TNC 620 | User's ManualDIN/ISO Programming | 2/2015
Activating the datum
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 G80, 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
Use Cycle G247 in order to activate datums from the preset table
during program run. In Cycle G247 you simply define the number of
the datum to be activated (see User's Manual for Cycles, Cycle 247
DATUM SETTING).