HEIDENHAIN TNC 640, User Manual, Page: 744 / 948

Manual Operation and Setup | Managing presets
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Protecting presets from being overwritten
You can protect any 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 manual
probing cycle, confirm with
OK
and enter the password (where
password-protected).
NOTICE
Caution: Data may be lost!
Rows that were locked with the
LOCK / UNLOCK PASSWORD
function can be unlocked only with the selected password.
Forgotten passwords cannot be reset. This means that locked
rows would be locked permanently. The preset table would thus
no longer be fully usable.
Prefer the alternative function
LOCK / UNLOCK
Note down your passwords
Proceed as follows to protect a preset from being overwritten:
Press the
CHANGE PRESET
soft key
Select the
LOCKED
column
Press the
EDIT CURRENT FIELD
soft key
Protection for a preset without using a password:
Press the
LOCK / UNLOCK
soft key
The control writes an
L
in the
LOCKED
column.
Use a password to protect a preset:
Press the
LOCK / UNLOCK PASSWORD
soft key
Enter the password in the pop-up window
Confirm with the
OK
soft key or with the
ENT
key:
The control writes
###
in the
LOCKED
column.