What does 'Know-how protection: Copy protection error' mean on Siemens Control Unit?
- Jjuan81Sep 23, 2025
If your Siemens Control Unit displays 'Know-how protection: Copy protection error', it means the know-how protection and the copy protection for the memory card are active, and an error occurred during checking of the memory card. Insert a suitable memory card and temporarily switch the converter supply voltage off and then on again (POWER ON). Deactivate the copy protection (p7765).