Mitsubishi Electric melsec q00ujcpu User Manual page 299

(2) Backup data file
After data are backed up, a backup data file "MEMBKUP0.QBP" is created in a memory card.
Only one backup data file can be stored to a memory card.
When data are backed up to a memory card containing a backup data file again, the stored backup data file is
overwritten. When a memory card contains another file, a backup data file can be stored in the memory card
without deleting the stored file.
*1: After restoration, if the parameters are stored in the memory card but not in the CPU module, the CPU module operates by
the parameter settings in the memory card.
*2: When data are backed up to the Flash card, only a backup data file can be stored.
The backup data file can be deleted by "Delete PLC data" of GX Developer.
(3) Backup data
(a) Backup data selection
Table6.49 shows data to be backed up.
Backup data (drive)
Program memory (drive 0)
Standard RAM (drive 3)
Standard ROM (drive 4)
*2
Device data
System data
*1: Data in the program cache memory are backed up.
*2: Only the latch relay (L) and devices to which the latch range setting can be configured are backed up.
(b) Backup data size
Table6.50 shows the maximum size of data that can be backed up.
Backup target data (drive)
Program memory (drive 0)
Standard RAM (drive 3)
Standard ROM (drive 4)
Device data
System data
Total (maximum)
The backup data size can be checked by the following methods.
• Execution screen of GX Developer (
• SD698 and SD699(
*1: Can check the data size after backup starts.
6 - 148
*1 *2
Table6.49 Data to be backed up
Description
All data in the program memory (drive 0)
All data in the standard RAM (drive 3)
All data in the standard ROM (drive 4)
Internal user device
(M, L, B,F,V,T,ST,C,D,W)
Data managed by the system (such as error
history)
Table6.50 Maximum size of data that can be backed up
Q03UD/ Q04UDH/
Q02UCPU Q03UDE Q04UDEH
CPU CPU
80 142 182
128 193 257
512 1036 1036
128 128 128
47 73 73
895 1572 1676
CHAPTER 12)
*1
Selectable
Not selectable
(Data are automatically backed up by the
system.)
Q06UDH/ Q10UDH/
Q06UDEH Q10UDEH
CPU CPU
262 422
769 1036
1036 2060
128 128
73 79
2268 3725
Section 6.30.1(1)(b))
*1
Backup selection by the user
Q13UDH/ Q20UDH/ Q26UDH/
Q13UDEH Q20UDEH Q26UDEH
CPU CPU
542 822 1062
1036 1292 1292
2060 4108 4108
128 128
79 79
3845 6429 6669
(Unit: K byte)
CPU
128
79