Siemens SINUMERIK 840D sl Commissioning Manual page 27

Delete password
Access authorization is not automatically deleted at POWER ON!
NOTICE
When a general reset is performed on the NCK, the default passwords are restored.
HMI sl (IM9)
Commissioning Manual, 01/2008, 6FC5397-1DP10-3BA0
Press the "Delete password" softkey. The access authorization is
reset.
4.1 Modifying the protection level password
Protection levels
21