272
(3) Restoration behavior of data backed up
The following figures show the restoration behavior of data backed up.
A value indicating restoration status is stored in SD693 (Restoration status).
(4) Operation of the special relay and special register
*1
The following figure shows the operation of SM692 (Restoration complete flag).
*1 For details of the special relay and special register used for this function, refer to the following.
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
• Restoration using a programming tool
• Automatic restoration
Status Description Value stored in SD693
Before restoration start Restoration processing has not been started.
0
H
Restoration in execution Data are being restored.
1
H
Restoration completed Data have restored normally.
2
H
Restoration error Data restoration has failed and an error has occurred.
FF
H
Start
End
Restoration is
performed again.
1: Before restoration start
Insert a memory card or SD memory
card storing the backup data to the
CPU module, and restore the data
using a programming tool.
Data restoration has failed.
4: Restoration error
Restoration is suspended.
2: Restoration in execution
3: Restoration completed
After the restoration processing ends,
power off and then on or reset the
CPU module.
Data have been restored
successfully.
Start
End
Restoration is
performed again.
1: Before restoration start
Insert a memory card or SD memory
card storing the backup data to the
CPU module, and power off and
then on or reset the CPU module.
Data restoration has failed.
4: Restoration error
2: Restoration in execution
3: Restoration completed
After the restoration processing ends
the CPU module continues its operatio
Powering off and then on or resetting
the CPU module is not required.
Data have been restored
successfully.
Off
On
SM692
(Restoration
complete flag)
Before
restoration start
Restoration in
execution
Restoration
completed
To Next Page
Loading...
