Siemens SIMATIC ET 200pro Original Instructions Manual page 181

Factory setting for the exception list:
● p7763 = 1 (selection list contains precisely one parameter)
● p7764[0] = 7766 (parameter number for entering the password)
Note
Block access to the inverter as a result of incomplete exception lists
If you remove p7766 from the exception list, you can no longer enter a password and
therefore no longer de-activate know-how protection.
In this case to access the inverter again, you have to reset the inverter to the factory
settings.
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
Backing up data and series commissioning
9.5 Write and know-how protection
181