Appendices
A-98
CP2E CPU Unit Software User’s Manual(W614)
A751
11
DM Backup Restore
Failed Flag
ON when DM backup data could not
be restored normally. If this flag turns
ON, data will not be restored from the
built-in Flash Memory to RAM.
ON: Restore failed
OFF: Execution
normal
Retained Cleared Written when
fail to restore.
14 DM Backup Save Flag ON when A751.15 is turned ON to
start the saving operation. This flag
stays ON while data is being saved
and turns OFF when finished.
ON: Saving
OFF: Not saving
Retained Cleared Written when
save starts
15 DM Backup Save
Start Bit
Saving the specified words from the
DM Area in RAM to the built-in Flash
Memory is started when this bit is
turned ON.
This bit will not turn OFF automatically
even when saving the data has been
completed.
If this bit is turned ON and OFF while
the DM Backup Save Flag (A751.14)
is ON, it will be ignored and the data
will not be backed up again.
Note Select the Restore D0- from
backup memory Check Box and
set the number of DM Area
words to back up in the Number
of CH of DM for backup Box in
the PLC Setup before using this
bit.
ON: Start saving.
OFF: Execution
normal or still
in progress.
Retained Cleared ---
Address
Name Function Settings
Status
after
mode
change
Status at
startup
Write
timing
Related
flags,
settings
Words Bits
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