Mitsubishi Electric IQSS-R-E Reference Manual page 261

Program execution for data backup
Information of a device supporting iQSS can be backed up in an SD memory card.
New folders are created every time when data is backed up, and data of each device supporting iQSS is saved in a file format
in the folders. A system file ($BKUP_UNIT_INF.BSI) that contains information required for data restoration is created for each
station when data is backed up.
Data backup and restoration can be performed regardless of the operating status of a CPU module.
The following shows the procedure to back up data with a program.
Procedu Item
re
1 Acquire a right to use.
2 Set the backup target setting and the operation setting.
3 Perform a data backup.
4 Release the right to use.
For details on special relays (SM) and special registers (SD) to be used and their setting ranges, refer to the
following section.
Page 355 Special Relay (SM)/Special Register (SD) List
Results of the data backup and restoration functions can be checked in the event history of an engineering
tool. (Page 366 Event List)
Execution method of data backup
Special relays (SM) and special registers (SD) are used for data backup.
■Acquiring a right to use
To prevent the same special relay (SM) and special register (SD) from being set at the same time by other request sources,
acquiring a right to use of them is required.
A right to use can be acquired when other request sources do not have the right to use them (when SD1361 is '0000H').
1.
Setting a right-to-use request number
Set a request number (a value that has not been used by multiple request sources within the range of '1000H' to '1FFFH') to
SD1360 (iQ Sensor Solution data backup/restoration right-to-use request number).
2.
Requesting a right to use
Turn ON SM1360 (iQ Sensor Solution data backup/restoration right-to-use request) to acquire a right to use for data backup.
SM1360 turns ON to OFF when the right to use is acquired.
3.
Checking the acquisition of the right to use
Check that the value of SD1361 (iQ Sensor Solution backup/restoration right-to-use acquisition number) is the same as the
value set to SD1360. If backup/restoration is performed without checking the acquisition of the right to use, the normal
operation is not guaranteed.
The values of the special relays (SM) and special registers (SD) for iQ Sensor Solution backup/restoration are
cleared when a right to use is acquired. (However, SD1375 is set to 'FFFFH'.)
Save the values of the special relays (SM) and special registers (SD) as required.
Reference
Page 259 Acquiring a right to use
Page 260 Setting the backup setting
Page 262 Performing a data backup
Page 262 Releasing the right to use
9.4 Backing up/Restoring Data of Devices Supporting iQSS
9 CC-Link IE Field Network
9
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