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22 DATA BACKUP/RESTORATION FUNCTION
22.2 Restoration Function
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.
Functions that cannot be executed simultaneously with automatic restoration or CPU
module auto exchange
Do not execute automatic restoration using SD955, or restoration by automatic restoration using SD955 and CPU module
auto exchange simultaneously with the following functions.
• Firmware update function (Page 92 FIRMWARE UPDATE FUNCTION)
• Boot operation (Page 231 Boot Operation)
If these are executed simultaneously, automatic restoration or restoration with CPU module auto exchange will not function.
Operation of when the data logging function is used
If data is backed up during execution of the data logging function and the function has been set to be started automatically
when the operating status of the CPU module is changed to RUN, the data logging function will be automatically executed
when the status of the CPU module changes to RUN after the restoration processing. To restart the data logging function after
the restoration processing without the above setting, use the CPU module logging configuration tool.
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 using IP address change function
If executing backup when an IP address is stored in the IP address storage area (system memory), the IP address will change
at the following timing during restoration.
• Restoration processing triggered by turning on SM1354: When the CPU module is powered off and on or is reset after the
restoration processing
• Automatic restoration using SD955: When the restoration processing is executed
• Restoration triggered by CPU module auto exchange: When restoration is executed.
Operation or function
Operation from GX Works3 Initializing the CPU built-in memory/SD memory card
Clearing values (Devices, extended file registers, 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)
Operation using the CPU module
logging configuration tool
Data logging function (Writing/reading/deleting a logging setting file, registering/clearing a logging setting)
Operation of a logging file (deletion)
Others • SLMP
• MC protocol
Remote latch clear
Ethernet communication File transfer function (FTP server)
File transfer function (FTP client)
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