Mitsubishi Electric MELSEC iQ-R-R00CPU, Руководство пользователя

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15 CPU MODULE DATA BACKUP/RESTORATION FUNCTION
15.1 Backup Function
When parameter settings were changed before execution of the backup processing
When programs or parameter settings were changed, check that operations are performed with the new programs and
parameter settings and then execute the backup function. If the backup processing is executed without the check of the
operations with the new programs and parameter settings, the restoration processing may not be executed.
Changing backup target data
Do not change backup target data in the CPU module during execution of the backup processing. If the target data was
changed during execution of the backup processing, the changes will not applied.
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.
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 backed up.
■ Security key authentication function
Locked programs are backed up in the locked state regardless of whether security keys have been written or not.
Timing for setting the upper limit value for the number of CPU module backup data
Set the upper limit value for the number of CPU module backup data before execution of the backup processing.
When the backup processing has been executed (a CPU data folder exists in the SD memory card) and the bit 5 of SD944
(Enable the upper limit value for the number of CPU module backup data) is turned on, an error will occur.
Even though the backup processing has been executed, turning on the bit 5 of SD944 can disable the upper limit value for the
number of CPU module backup data. To set the upper limit value for the number of CPU module backup data again, replace
the SD memory card with another one where no CPU data folder exist, or turn off and on the bit 5 of SD944 after deleting the
backup data folder.
SFC program status
Do not change the status of the SFC program, such as step active status and transition conditions during execution of the
backup processing. If the status of the SFC program was changed, the backup processing is completed with an error.
Time required for completing the backup processing
The backup processing takes more time depending on the size of data or the number of folders/files stored in the CPU
module.