Maintenance and service
7.11 Saving data and updating the IM 153-4 PN
ET 200M
124 Operating Instructions, 12/2008, EWA-4NEB780600602-08
7.11 Saving data and updating the IM 153-4 PN
Storage medium
A SIMATIC Micro Memory Card is used as the storage medium for the IM 153-4 PN. The
MMC can be used as a portable data medium.
On a SIMATIC Micro Memory Card you can save either technology data (device name) or
data for a firmware update.
Service life of a SIMATIC Micro Memory Card
The service life of a SIMATIC Micro Memory Card depends essentially on the following
factors:
● Number of deletion or programming operations
● external influences, such as ambient temperature
At an ambient temperature up to 60 °C, the useful life of a SIMATIC Micro Memory Card is
10 years at a maximum of 100,000 delete/write operations.
Plug-in SIMATIC Micro Memory Cards
The following memory modules are available:
Table 7- 3 Available SIMATIC Micro Memory Cards
Type Order number
SIMATIC Micro Memory Card 64k 6ES7953-8LF20-0AA0
SIMATIC Micro Memory Card 128k 6ES7953-8LG11-0AA0
SIMATIC Micro Memory Card 512k 6ES7953-8LJ20-0AA0
SIMATIC Micro Memory Card 2M 6ES7953-8LL20-0AA0
SIMATIC Micro Memory Card 4M 6ES7953-8LM20-0AA0
SIMATIC Micro Memory Card 8M 6ES7953-8LP20-0AA0
A SIMATIC Micro Memory Card 64k is sufficient for saving the device name. The SIMATIC
Micro Memory Cards with at least 2 MB of storage capacity are required when conducting a
firmware update.