Siemens S7 PLCs use MMCs to store the user program (blocks), hardware configuration, and data. When you use a tool like "S7ImgRead" or a standard SD card reader to create a backup, it generates an .img or .wld file.
: Use a tool like WinHex to clone the entire MMC to your PC as an image file. Unlock And Converter Mmc Image S7 61 Rar
The open-source tool S7ImgRW (available on GitHub) can read a protected image: Siemens S7 PLCs use MMCs to store the
(if writing back to physical card):