HEIDENHAIN TNC 407 (280 580) ISO Programming - Manual (Page 77)

TNC 426/TNC 425/TNC 415 B/TNC 407 2 - 1 6
2 Manual Operation and Setup
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2.5 Setting the Datum with a 3D Touch Probe
Select the second coordinate.
DATUM
Enter the second coordinate of the datum (for example, in the Y axis).
Terminate the probing function.
If you do not wish to use the points that were already probed for a basic rotation:
TOUCH POINTS OF BASIC ROTATION?
Ignore the previous touch point coordinates.
Probe both workpiece sides twice each.
Enter the coordinates of the datum.