S7-1200 Password Unlock -

: Ensure the memory card is empty. You can delete the S7S file extension on a standard PC to clear previous data. Power Down : Switch off the power supply to the S7-1200 CPU Insert Card : Insert the empty card into the CPU slot. Power Up : Turn the power supply back on.

Additionally, individual software blocks (FCs, FBs, and DBs) can have applied. This hides the internal code structure from the user even if they have full access to the PLC hardware itself. Legitimate Method: Factory Reset via Siemens Memory Card S7-1200 Password Unlock