: Detailed steps are available on the Siemens Support Forum . 2. PLC Hardware Reset (MRES)
If you do not have an expensive Siemens card reader, you can format the card while it is inside the PLC CPU. Ensure the PLC CPU is switched to mode. siemens mmc card format tool
Once finished, check the card in Windows Explorer. It should appear empty but accessible. : Detailed steps are available on the Siemens Support Forum
Open S7ImgWR or Win32 Disk Imager as an Administrator. Select Image: Browse to your clean backup image file. siemens mmc card format tool