HEIDENHAIN TNC 640 (34059x-05) - Manual (Page 542)

Manual operation and setup
15.5 Datum management with the preset table
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TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 1/2015
Datum protected without password:
Press the soft key. The TNC rescinds write-
protection.
Datum protected with password:
Press the soft key
Enter the password into the pop-up window
Confirm with the
OK soft key or the ENT key: The
TNC rescinds write-protection.
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 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
Use Cycle 247 in order to activate datums from the preset table
during program run. In Cycle 247 you simply define the number of
the datum to be activated (see User's Manual for Cycles, Cycle 247
DATUM SETTING).