Recommended Method Of Handling Compactflash Cards; Card Reader For Cf Cards - Siemens SIMOTION D410 Commissioning Manual

Maintenance and service
6.5 SIMOTION CompactFlash Card
6.5.5

Recommended method of handling CompactFlash Cards

Handling CF cards correctly
Please note the following when handling the CF card:
● The CF card may only be inserted or removed when the system is de-energized.
● CF cards are not designed to be rewritten as many times as the user wishes.
● Switching off the SIMOTION D Control Unit during write accesses to the CF card must be
6.5.6

Card reader for CF cards

Because of the quickly changing market and the large differences in the quality of card readers,
no specific recommendation can be made (except for the following card reader).
If problems occur identifying the CF card, this may be due to an incorrect power up of the card
reader.
Designation and ordering data
Card reader for CF/SD memory media,
with USB connection
Order number: 6FC5 335-0AA00-0AA0
198
NOTICE
Damage to the CompactFlash card from electrical fields or electrostatic discharge
The CompactFlash card is an ESD-sensitive component.
De-energize the SIMOTION D410 device before inserting or removing the CompactFlash
card. The SIMOTION D410 is in a de-energized state when all the LEDs are OFF.
Comply with the ESD rules.
With this in mind, you should avoid writing user data from the application to the CF card
cyclically. Depending on the system, a write operation from the application may trigger one
or more write operations on the CF 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.
avoided at all costs (examples of write accesses to the CF card: "Copy RAM to ROM",
savePersistentMemoryData, _saveUnitDataSet, _exportUnitDataSet, etc.). In the worst
case scenario, switching off the SIMOTION D Control Unit during write access can damage
the file system on the CF card. In this case, the CF card must be reformatted and the
firmware/user data reloaded. During this process the licenses remain on the CF card.
SIMOTION D410
Commissioning Manual, 04/2014