Functions of the IM 151-7 CPU
8-7
ET 200S IM 151-7 CPU Interface Module
A5E00058783-04
Service life of an MMC
The service life of an MMC mainly depends on the following factors:
1. The number of erasing and programming operations
2. External influences such as the ambient temperature
At an ambient temperature of up to 60° C, the service life of an MMC with max.
100,000 erase/write operations is 10 years.
!
Caution
To prevent data loss, never exceed the maximum number of erase/write
operations.
Compatible SIMATIC Micro Memory Cards
The following memory modules are available:
Table 8-4 Available MMCs
Type
Order numbers
MMC 64k 6ES7 953-8LF00-0AA0
MMC 128k 6ES7 953-8LG00-0AA0
MMC 512k 6ES7 953-8LJ00-0AA0
MMC 2M 6ES7 953-8LL00-0AA0
MMC 4M 6ES7 953-8LM00-0AA0
MMC 8M 6ES7 953-8LP10-0AA0
The MMCs with a 4 MByte and 8 MByte memory are required for a firmware
update.
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