Which devices can you use to read from, write to or delete from an S7-300 MMC (Micro Memory Card) outside the CPU?
The SIMATIC Micro Memory Cards (MMCs) of the S7-300 may be read or written only by the following devices outside the CPU:
- SIMATIC Field PG
- SIMATIC Power PG
- USB prommer (order number 6ES7792-0AA00-0XA0).
Using these devices, you can open an MMC in the SIMATIC Manager for reading or writing or for deleting the content.
Do not use the MMC for non-SIMATIC purposes and do not format it with a third-party device. This would possibly overwrite the internal structure of the MMC that cannot be restored. In this case, the MMC is no longer recognized/accepted in a SIMATIC S7-300 CPU and can no longer be used with SIMATIC devices.
More information on handling the MMC is available in the manual "S7-300, CPU 31xC and CPU 31x: Installation Instructions" in Entry ID 13008499.