If you don't need the program, go to the PLC Menu > Clear in Step 7-Micro/WIN. This wipes everything, including the password, and allows you to download a new project.

The following steps outline the general process to unlock the MMC password:

Simatic S7 200 S7 300 Mmc Password Unlock 2006 09 11 Rar Files Upd Page

If you don't need the program, go to the PLC Menu > Clear in Step 7-Micro/WIN. This wipes everything, including the password, and allows you to download a new project.

The following steps outline the general process to unlock the MMC password: If you don't need the program, go to