Warning : Do format the card if prompted by Windows, as this destroys the Siemens-specific file system.
Different methods were established for these two distinct PLC families: : simatic s7 200 s7 300 mmc password unlock 2006 09 11
The MMC password protection is a security feature that prevents unauthorized access to the PLC program and data. If the password is forgotten or lost, it can be challenging to regain access to the PLC. Warning : Do format the card if prompted