Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 287

Data protected by security functions
■File password function
Unlock the file passwords of the files in the backup target CPU module. If any files to which file passwords have been set exist
in the CPU module, the files are not restored.
■Security key authentication function
Locked programs can be restored regardless of whether security keys have been written or not. However, when the security
key has not been written to the CPU module after the restoration processing, the program cannot be executed. Restore
unlocked backup data or set the same security key.
When the SFC program is restarted from where the program was stopped
Specify the continue start. When the continue start has not been specified, the SFC program will be started from the block 0
and step 0 even though the bit 15 of SD955 is on (the continue start is executed).
When the IP address change function is used
If the backup processing is executed with the IP address stored in the IP address storage area (system memory), the IP
address will be changed at the following timing in the restoration processing.
• Restoration processing triggered by turning on SM1354: When the CPU module is powered on or is reset after the
restoration processing
• Automatic restoration using SD955: When the restoration processing is executed
Operations and functions that cannot be performed
While the following operations or functions are being executed, the restoration processing cannot be executed.
The following operations and functions cannot be executed during execution of the restoration processing.
Operation or function
Operation from the engineering tool
Operation using the CPU module logging
configuration tool
Initializing the CPU built-in memory/SD memory card
Clearing values (Devices, labels, file registers, latches)
Reading data from the programmable controller
Writing data to the programmable controller (including online change of files)
Verifying data with the programmable controller
Deleting data in the programmable controller
User data operation
Online change (online change (ladder block))
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,
stopping a logging)
Deleting a logging file
15 CPU MODULE DATA BACKUP/RESTORATION FUNCTION
Reading user data
Writing user data
Deleting user data
Creating a folder
Deleting a folder
Changing a folder name
15.2 Restoration Function
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