Commonly used for S7-300 CPUs to perform an "Overall Reset" of the MMC.
If an MMC has been accidentally formatted in Windows or become unrecognizable to the CPU, the following recovery method has proven effective for many users:
A Siemens MMC contains a hidden system area and a specific partition structure required by Simatic Manager and TIA Portal. When you format it via Windows: The is rewritten to FAT32 or NTFS. The Special Internal ID is ignored. siemens mmc card format tool
The you are using (e.g., S7-300, S7-1200, S7-1500). If the card is currently unreadable or "defective." If you have a Siemens USB Prommer or a Field PG.
No. S7-300 CPUs require proprietary Siemens Micro Memory Cards (MMCs). Standard SD cards will not be recognized, and trying to use them may cause CPU errors. Why does my PLC keep asking for an MMC? Commonly used for S7-300 CPUs to perform an
If you'd like to troubleshoot a (such as a blinking "STOP" LED) or need a guide for backing up the card image before formatting, just let me know. To help you further: Are you working with an S7-300, S7-1200, or S7-1500 system?
Insert the MMC into the dedicated Simatic Card slot on your PG or USB Prommer. Open or TIA Portal . The Special Internal ID is ignored
use Windows "Format" (FAT/FAT32/NTFS) on a Siemens MMC. Reason : Siemens cards use a proprietary block structure.
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Typical use cases