Mitsubishi Electric Q01UCPU User Manual page 264

(c) Operation of data backup using contacts
The following figure shows the operations of the backup start setup contact, backup start contact, SM691
(Backup start preparation status flag), and SD690 (Backup status).
Before backup start
ON
Backup start
setup contact
OFF
SM691
ON
(Backup start
preparation status OFF
flag)
ON
Backup start
OFF
contact
SD690
(Backup status)
If the backup start contact is turned on while the value in SD690 is 0
prepared), data are not backed up.
If the backup start contact is on before the value in SD690 becomes 2
turning off and then on the backup start contact again while the value in SD690 is 2
completed) starts backup.
(2) Data backup using a programming tool
Data backup using a programming tool can be performed on the "Create Backup Data for PLC Module Change"
window.
[Online]
For details, refer to the following.
Operating manual for the programming tool used
262
Backup start setup request from
the programming tool or the backup start
setup contact is turned on.
Backup start prepared
0
[PLC Module Change]
Backup start request from
the programming tool or the backup
start contact is turned on.
Backup start
preparation completed Backup in execution
1 2
[Create Backup Data]
Backup completed
3
(Before backup start) or 1
H
(Backup start preparation completed),
H
(Backup start preparation
H
4
(Backup start
H