Siemens SINAMICS

Exceptions to write protection
Some functions are free from write protection, such as:
● Deactivating/activating the write protection
● Changing the access level (p0003)
● Saving parameters (p0971)
● Safe removal of the memory card (p9400)
● Restoring the factory setting
● Transfering the settings from an external data backup, e.g. upload into the drive unit from
a memory card.
The parameters that are not write protected are in the converter List Manual in chapters
"Parameters for write protection and know-how protection" and "Parameters with
WRITE_NO_LOCK".
Overview of important parameters
Note
For a description of the parameters, see the converter List Manual.
Parameter Function
r7760 Write protection / know-how protection status
p7761 Write protection
p7762 Write protection multi-master fieldbus system access behavior
5.2.2 Know-how protection
5.2.2.1 Overview
The "know-how protection" (KHP) function prevents, for example, strictly confidential company
knowledge for configuration and parameter assignment from being read by unauthorized
persons.
The know-how protection requires a password. The password must comprise at least 1 and a
maximum of 30 characters.
The know-how protection is a pure online function. Therefore, establish a direct connection to
the Control Unit before setting the password.
Security measures for SINAMICS
5.2 Write protection and know-how protection
Industrial Security
34 Configuration Manual, 08/2017, A5E36912609A