Siemens cards (64KB to 8MB) are actually standard 16MB or 32MB cards with a unique internal signature . If you format them in Windows, the Siemens signature is lost, and the PLC will no longer recognize them. 2. Where to Download MMC Image Files
A hex editor (like WinHex) or specialized utilities like S7imgRD/S7imgWR . Procedure: Connect the MMC using a compatible USB card reader. Open your imaging tool with Administrator privileges . siemens mmc image file download
