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(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 *2
*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.
*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) Maximum backup data size
Table6.50 shows the maximum size of data that can be backed up.
(Unit: K byte)
The backup data size can be checked by the following methods.
• Execution screen of GX Developer ( Section 6.30.1(1)(b))
• SD698 and SD699( CHAPTER 12)
*1
*1: Can check the data size after backup starts.
Table6.49 Data to be backed up
Backup data (drive) Description Backup selection by the user
Program memory (drive 0)
All data in the program memory (drive 0)
*1
Selectable
Standard RAM (drive 3) All data in the standard RAM (drive 3)
Standard ROM (drive 4) All data in the standard ROM (drive 4)
Device data
*2
Internal user device
(M, L, B,F,V,T,ST,C,D,W)
Not selectable
(Data are automatically backed up by the
system.)
System data
Data managed by the system (such as error
history)
Table6.50 Maximum size of data that can be backed up
Backup target data (drive) Q02UCPU
Q03UD/
Q03UDE
CPU
Q04UDH/
Q04UDEH
CPU
Q06UDH/
Q06UDEH
CPU
Q10UDH/
Q10UDEH
CPU
Q13UDH/
Q13UDEH
CPU
Q20UDH/
Q20UDEH
CPU
Q26UDH/
Q26UDEH
CPU
Program memory (drive 0) 82 124 164 244 408 528 808 1048
Standard RAM (drive 3) 130 194 258 770 1026 1026 1282 1282
Standard ROM (drive 4) 516 1032 1032 1032 2056 2056 4104 4104
Device data 128 128 128 128 128 128 128 128
System data 4164646464646464
Total (maximum) 897 1542 1646 2238 3682 3682 6386 6626