CPU with a different hardware configuration may trigger a "mismatched configuration" error, allowing you to use that CPU’s MRES button to format the card. Essential Safety and Legal Notes S7-200 Password Recovery | PLCtalk - Interactive Q & A
If you have an older S7-200 or S7-300 CPU, and you’ve lost the password that protects the MMC (Multimedia Card) or the internal EEPROM, you may have encountered references to this date. This article provides a deep dive into the technical background, the vulnerability, step-by-step unlock procedures, and critical legal and ethical considerations. simatic s7 200 s7 300 mmc password unlock 2006 09 11
Here is the modern approach:
. You can recover it without deleting the program by following these steps: Create a Disk Image CPU with a different hardware configuration may trigger