HEIDENHAIN TNC 620 User Manual page 508

14
Manual Operation and Setup
14.5 Datum management with the preset table
Overwrite protection for datum
Row 0 in the preset table is write-protected. The TNC saves the
last manually set datum in row 0.
You can protect further rows in the preset table from being
overwritten with the LOCKED column. The write-protected rows
are color-highlighted in the preset table.
If you want to overwrite a write-protected row with a
manualprobing cycle, confirm with OK and enter the password
(wherepassword-protected).
Caution: Data may be lost!
If you forget the password, then you can no longer
reset the write protection in a protected row.
If you protect a row with a password, please make a
note of this password.
Ideally, use simple protection with the LOCK /
UNLOCK 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 LOCK / UNLOCK soft key
The TNC writes an L in the LOCKED column.
Protect a datum with a password:
Press the LOCK / UNLOCK PASSWORD soft key
Enter the password into the pop-up window
Confirm with the OK soft key or with the ENT key:
The TNC writes ### to the LOCKED column.
508
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016