Mitsubishi Electric MELSEC iQ-R Series - Page 312

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22 CPU MODULE DATA BACKUP/RESTORATION FUNCTION
Backup data
Backup data is saved in an SD memory card. The following shows the folder structure of backup data.
No. Folder type Folder name Number of
storable folders
Description
(1) Backup data folder Backup (Fixed) 1 A folder for storing all backup data
(2) CPU data folder CPU (Fixed) 1 A folder for storing backup data of the CPU module
(3) Date folder Automatically determined
*1
Folder name format: YYYYMMDD
• YYYY: Year when the data was backed up
(four digits)
• MM: Month when the data was backed up
(two digits)
• DD: Day when the data was backed up
(two digits)
Depends on the
capacity of the SD
memory card used
*2
or 1 to 100 folders
Folders for storing backup data by date
For the setting of the upper limit value for the number
of CPU module backup data, the number of backup
data indicates the number of date folders. ( Page
314 Setting the upper limit value for the number of
CPU module backup data)
(4) Number folder Automatically determined
*1
Folder name: Sequentially numbered from
00001 to 32767 (five digits)
Depends on the
capacity of the SD
memory card used
*2
Folders for storing information per backup data. Each
backup data created on a date is stored in sequentially
numbered folders.
(5) Drive folder Drive0 (Fixed), Drive3 (Fixed), and Drive4
(Fixed)
One set of the
folders in a number
folder
Folders for storing folders/files stored in each drive of
the backup target CPU module by each drive
(6) System file for backing
up CPU module data
$BKUP_CPU_INF.BSC One folder in a
number folder
Files for storing the information required at restoration
of data, such as a list of backup data and identification
information of the CPU module
(7) Backup data file for
backing up CPU
module data
BKUP_CPU.BKD One folder in a
number folder
The following data is stored.
• Data on operations of the data logging setting
• Data for restarting the SFC program from the block
and step where the processing was stopped
Drive0
MAIN.PRG
FB.PFB
0000120160101CPU
00002
20160102
Drive3
FILEREG.QDR
LOGCOM.QLG
Drive4 $MELPRJ$
MAIN.PRG
MEMDUMP.DPS
$BKUP_CPU_INF.BSC
BKUP_CPU.BKD
BKUP_CPU_DEVLAB.BKD
(2)(1)
$MELPRJ$ Backup
(3) (4) (5)
(6)
(7)
(8)
$BKUP_CPU_SWRSTR.BSC (9)
/
Root directory