Mitsubishi Electric Q01UCPU User Manual page 265

(3) Data backup operation details
(a) Changing a memory card or SD memory card
If a memory card or SD memory card is being used in a running system, the card can be changed to another
card after the status of the data backup function shifts into the ready status. (SM609 (Memory card
remove/insert enable flag) does not need to be turned on.) Upon the status change, the CPU module turns off
SM604 (Memory card in-use flag).
(b) Data backup operation status
The following table lists the backup operation status.
Status
Before backup start
Backup start prepared
Backup start preparation completed
Backup in execution
Backup completed
Backup error
Before backup start
Backup start setup request
from the programming tool
Backup start prepared
Backup is ready to start.
Backup start preparation
Backup start request
from the programming tool
Backup in execution
Data have been backed up to
a memory card or SD memory card.
Backup completed
Data backup processing has not been started.
A memory card or SD memory card can be changed (removed
and inserted).
Backup target data are set.
Data are being backed up.
Data have been backed up normally
Data backup has failed and an error has occurred.
Start
The backup start setup
contact is turned on.
completed
The backup start
contact is turned on.
End
Description
Data are backed up again.
Data backup has failed.
Backup error
CHAPTER 3 FUNCTIONS
Value in SD690
0
H
1
H
2
H
3
H
4
H
FF
H
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