HEIDENHAIN TNC 640 User Manual page 563

Special Functions | Defining coordinate transformations
TRANS DATUM RESET
Example
13 TRANS DATUM RESET
Use the TRANS DATUM RESET function to cancel a datum shift.
How you previously defined the datum is irrelevant. Proceed as
follows for the definition:
Show the soft-key row with special functions
Press the PROGRAM FUNCTIONS soft key
Select transformations
Select the TRANS DATUM datum shift
Press the RESET DATUM SHIFT soft key
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
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