Technical Data Of The Micro Memory Card (Mmc) - Siemens Simatic S7-300 Technical Data Manual

Technical data of CPU 31x
7.1 General technical data
7.1.2

Technical data of the Micro Memory Card (MMC)

Plug-in SIMATIC Micro Memory Cards
The following memory modules are available:
Table 7-1
Type
MMC 64k
MMC 128k
MMC 512k
MMC 2M
MMC 4M
MMC 8M
This MMC cannot be used together with CPU 312C or CPU 312.
1
Maximum number of loadable blocks in the MMC
The number of blocks that can be stored on the MMC depends on the capacity of the MMC
being used. The maximum number of blocks that can be loaded is therefore limited by the
capacity of your MMC (including blocks generated with the "CREATE DB" SFC):
Table 7-2
Size of MMC
64 KB
128 KB
512 KB
2 MB
4 MB
8 MB
7-2
Available MMCs
Order number
6ES7 953-8LFxx-0AA0
6ES7 953-8LGxx-0AA0
6ES7 953-8LJxx-0AA0
6ES7 953-8LLxx-0AA0
6ES7 953-8LMxx-0AA0
6ES7 953-8LPxx-0AA0
1
Maximum number of loadable blocks on the MMC
Maximum number of blocks that can be loaded
768
1024
Here the maximum number of blocks that can be loaded for the
specific CPU is less than the number of blocks that can be stored on
the MMC.
Refer to the corresponding specifications of a specific CPU to
determine the maximum number of blocks that can be loaded.
Required for a firmware update via MMC
–
–
–
Minimum requirement for CPUs without DP interface
Minimum requirement for CPUs with DP interface
–
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05