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Mitsubishi Electric FX5 User Manual Page 175

Melsec iq-f series.
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Suspending backup processing
The following operation can suspend a backup processing.
• Setting the SD memory card forced disable
Suspending a backup processing leaves the backup data in the SD memory card in an incomplete state which is in the middle
of the backup processing. Do not use these data for a restoration. If these data are used, the restoration completes with an
error.
Device/label data
To execute the backup processing, do not change device/label data during execution of the processing. Since device/label
data is divided into multiple scans and backed up, changes in the device/label data may cause data inconsistency.
Operations and functions that cannot be performed
While the following operations or functions are being executed, the backup processing cannot be executed.
The following operations and functions cannot be executed during execution of the backup processing.
Operation or function
Operation from GX Works3
Operation using the CPU Module
Logging Configuration Tool
Others
Special relay and special register that function as flags to execute other functions
Before executing the backup processing, turn off the special relay and special register that function as flags to execute other
functions. If the backup processing is executed when they are on, the corresponding function request may turn on and the
function may be executed at the restoration of data in the special relay and special register.
Time required for completing the backup processing
It may take time for the backup to finish in the following cases:
• When the size of data or number of folders/files stored on the CPU module is large
• When a function that accesses the SD memory card, such as data logging function or event history function (save
destination: SD memory card), is operating
• When Ethernet communication is in progress
If the backup does not finish, format the SD memory card, or re-insert the memory card. If the backup still does not finish, the
SD memory card may have a hardware error, so replace the SD memory card.
Initializing the CPU built-in memory/SD memory card
Clearing values (Devices, labels, latches)
Reading data from the PLC
Writing data to the PLC
Verifying data with the PLC
Deleting data in the PLC
Online change
Event history function (Updating event history data, clearing event history)
File password function
Security key authentication function (Writing/deleting a security key to/in the CPU module)
Predefined protocol support function (Writing/reading/verifying protocol setting data)
Memory dump function (Memory dump setting/reading results, registering/clearing memory dump)
Data logging function (Writing/reading/deleting a logging setting file, registering/clearing a logging setting)
Operation of a logging file (deletion)
Initial device values (Stopping and running the CPU module)
• SLMP
Remote latch clear
• MC protocol
Ethernet communication
File transfer function (FTP server)
22 DATA BACKUP/RESTORATION FUNCTION
22.1 Backup Function
22
173

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