Recommended Method Of Handling Compactflash Cards - Siemens SIMOTION D410 Series Commissioning Manual

Maintenance and service
5.5 SIMOTION CompactFlash Card
5.5.5

Recommended method of handling CompactFlash Cards

Handling CompactFlash Cards correctly
The following points should be noted when handling the CompactFlash Card:
● The CompactFlash Card may only be inserted or removed when the system is in a de-
● CompactFlash Cards cannot be rewritten as many times as the user wishes.
● We recommend you avoid switching off the module during write accesses to the
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energized state.
With this in mind, it is better if you avoid writing user data from the application to the
CompactFlash Card on a cyclical basis. Depending on the system, a writing process from
the application may trigger one or more writing processes on the CompactFlash Card.
Therefore, we recommend you adopt a conservative approach in terms of the number of
writing processes. In other words, do not perform more than 100,000 write access
instances from the user program over the estimated service life of the application.
CompactFlash Card (e.g. "Copy RAM to ROM", savePersistentMemoryData,
_saveUnitDataSet, _exportUnitDataSet, etc.).
D410
Commissioning Manual, 05/2009