Mitsubishi Electric MELSEC iQ-F FX5 - 22.1 Backup Function

22 DATA BACKUP/RESTORATION FUNCTION
22.1 Backup Function
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Progress of the backup/restoration processing
The progress of the backup/restoration processing can be checked with SD1350 (Number of uncompleted folders/files of CPU
module data backup/restoration) or SD1351 (Progression status of CPU module data backup/restoration).
22.1 Backup Function
This function backs up the CPU module data memory and device/label data onto the SD memory card. A new folder is created
during the backup, and the data is backed up with a file format into that folder.
The backup function operates even when the CPU module is in the RUN state.
When executing the backup function with the CPU module in the RUN state, do not change device/label data
during execution of the function. Doing so may cause data inconsistency of the device/label data and the
contents of the backup data may unintentionally change.
Operation mode
Backup modes include the normal mode and CPU module auto exchange mode. The operation mode is set with SD9350
(Operation mode setting).
Restoration target data setting
When backing up (CPU module auto exchange mode) by turning SM1351 ON, the data targeted for restoration with CPU
module auto exchange is set. Set with SD9351 (CPU module automatic replacement function Restore target data setting).
The settings are reflected onto the system file for CPU module auto exchange function.
Restoration of the special relay and special register
Set whether or not to restore the special relays and special registers with the CPU module auto exchange when backing up
with SM1351 ON (CPU module auto exchange mode). Set with SD9352 (CPU module auto exchange function setting) b14
(special relay, special register restoration (CPU module auto exchange function)).
The settings are reflected onto the system file for CPU module auto exchange function.
Special register Description
SD1350 Displays the number of remaining backup/restoration target folders and files.
• When the backup/restoration processing is started, the total number of backup/restoration folders and files is stored.
• When the backup/restoration processing is completed, 0 is stored.
SD1351 Displays the progress of the backup/restoration processing in percentage (0 to 100%).
However, the progress of automatic restoration using SD955 and restoration with CPU module auto exchange are
displayed only when the restoration finishes correctly (100%).
Value of SD9350 Operation mode Reference
0 Normal mode Page 213
1 CPU module auto exchange function (Deleting existing data) Page 214
2 CPU module auto exchange function (Holding existing data)
Value of SD9351 Restoration target data setting
0 Only device/label data
1 All target data
2 All target data excluding device/label data
b14 of SD9352 Restoration target data setting
OFF The special relay and special register are not restored.
ON The special relay and special register are restored.