Setting Datums Using Note/Set Function - HEIDENHAIN ND 780 Handbuch

Setting Datums using NOTE/SET Function

The NOTE/SET function is useful for setting a datum when a tool is
under load and the diameter of the workpiece is not known.
To use the NOTE/SET function:
Press the DATUM soft key.
The cursor will be in the Datum Number field.
Enter the datum number and press the DOWN
ARROW key to go to the X Axis field.
Turn a diameter in the X axis.
Press the NOTE soft key while the tool is still cutting.
Retract from the current position.
Turn the spindle off and measure the workpiece
diameter.
Enter the measured diameter, for example, 15 mm
and press ENTER.
Remember to ensure the ND 780 is in diameter
display mode (Ø) if you input a diameter value.
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I Operating Instructions