Considerations For Using An Sd Memory Card - Mitsubishi Electric MELSEC iQ-R Series User Manual

Considerations for using an SD memory card

SD memory card to be used
Use a supported SD memory card. (Page 50 SD memory card (sold separately, required))
If another SD memory card is used, data in the SD memory card may be corrupted or the system may stop.
When using an SD memory card used for other uses, make sure to format the card with the SD memory card diagnostic on
the configuration tool. (MELSEC iQ-R OPC UA Server Module User's Manual (Application))
Power-OFF or Reset of a CPU module
Data writing to an SD memory card may not be completed if the CPU module is turned OFF or reset during the writing.
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Normally, the power supply can be turned OFF without stopping the file access since files are automatically repaired by the
OPC UA server module when powering ON again.
However, infrequently, a file cannot be repaired completely by performing the above operations.
In addition, do not power OFF or reset a CPU module while formatting the SD memory card.
If any problem arises, power OFF or reset the CPU module after stopping the file access.
Check that the SD memory card is not being formatted since it can be formatted while stopping the file access.
For the important data, create backups in other media periodically.
Removing or replacing an SD memory card
Make sure to stop the file access before removing or replacing an SD memory card. (If the power is OFF and the file access is
not stopped, turn the power ON and stop the file access.)
Otherwise, the data in the SD memory card being accessed may be corrupted or a file system failure may occur.
Check that the SD memory card is not being formatted since it can be formatted while stopping the file access.
The setting of OPC UA server module is saved in an SD memory card. Therefore, write the setting after the replacement as
necessary.
4 PROCEDURE BEFORE OPERATION
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4.4 SD Memory Card