Works with cheap, standard USB external card readers instead of expensive Siemens PG field programmers. Step-by-Step Guide: How to Download and Setup Step 1: Secure a Clean Download
Insert the card into a S7-300 CPU and use the "Clear" function in Step 7 software, though this will wipe all programs, not just the password. unlock-and-converter-mmc-image-s7 download
Use the MRES (Memory Reset) switch. Hold it in the MRES position for ~9 seconds until the STOP LED stays lit, release, and quickly press it again within 3 seconds. Siemens SIMATIC S7-1200 PLC Programmable Controller oumeng-automation.com& more Go to product viewer dialog for this item. Works with cheap, standard USB external card readers
Note: Always scan downloaded executable files for malware, as tools of this type are frequently hosted on unofficial sites. Conclusion Hold it in the MRES position for ~9
Always remember your passwords to avoid needing to use recovery tools. Alternative Solutions for Siemens S7 Password Issues If the MMC converter is not successful, you can try:
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