• Communication with other modules and communication with the engineering tool or external devices is not
possible while the firmware update is being executed.
• If a device comment file exists in the CPU module at the time of firmware update, the device comment file
will be backed up to the SD memory card.
• If the firmware is updated correctly and there is a device comment backup file in the SD memory card, the
device comment file will be restored from the SD memory card to the CPU built-in memory. After the file is
restored, the device comment backup file in the SD memory card will be deleted.
• The firmware version can also be confirmed with the special register (SD8001).
• After the firmware is updated, if a firmware update file that differs from the CPU module's version is stored in
the "$MELPRJ$" folder of the SD memory card, the firmware will be updated.