Siemens Mmc Card Format — Tool

For users without the full TIA Portal suite, the SIMATIC Automation Tool can format cards via the CPU's network interface.

If a card has been accidentally formatted by Windows, it is no longer "visible" to Siemens software. In this case, you need a tool that can write a raw image file back to the card. siemens mmc card format tool

You cannot use a standard $5 USB card reader for most S7-300 MMCs because they do not support the specific commands required to access the hidden sectors. To successfully interface with these cards, you generally need: A (built-in slot). A Siemens USB Prommer (External hardware). For users without the full TIA Portal suite,

Unlike standard MMC cards, — doing so will corrupt the card and make it unusable in the PLC. You must use Siemens-specific software. You cannot use a standard $5 USB card

Formatting an MMC card is necessary in various situations:

If your card fails to format after three attempts, do not waste further production time. Dispose of the card (Siemens has no user-replaceable wear leveling) and procure a genuine Siemens replacement from your distributor.