HEIDENHAIN TNC 620 (81760x-02) ISO programming - Manual (Page 456)

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
Overwrite protection for datum
The line 0 in the preset table is write protected. The TNC saves the
last manually set datum in line 0.
You can overwrite-protect further lines in the preset table with
the
LOCKED column. The overwrite-protected lines are color-
highlighted in the preset table.
Caution: Data may be lost!
If you forget the password, you can no longer reset
the write-protection of a password-protected line.
Make note of the password when you password-
protect lines.
Preferentially use simple protection with the soft
key.
Proceed as follows to protect a datum from overwriting:
Press the CHANGE PRESET soft key
Select the LOCKED column
Press the EDIT CURRENT FIELD soft key
Protection for datum without using password:
Press the soft key. The TNC writes an L in the
LOCKED column.
Protection for datum 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 writes ### in the LOCKED column.