Settings For Automatic Restoration With The Sd Card Off Button; Checking Backup Errors - Mitsubishi Electric MELSEC iQ-R Series User Manual

Operating procedure (when a stop error has occurred in the CPU module)
Data is automatically backed up when a stop error occurs in the CPU module.
1.
Set the upper limit value for the number of CPU module backup data. (The setting method and operating procedure for
the upper limit value are the same as those for the upper limit value for the backup processing triggered by turning on
SM1351. ( Page 316 Operating procedure))
2.
To retry the automatic backup, turn on the bit 10 of SD944 (Backup function setting). For the retry of the automatic
backup, refer to the following.
Page 317 Retrying the automatic backup
3.
Turn on the bit 15 of SD944.
If the backup processing is completed with an error and SM953 turns on, check SD953, take actions, and then back up the
data again as required.
If a major error has occurred, the automatic backup may not be performed.

Settings for automatic restoration with the SD CARD OFF button

When using the automatic restoration with the SD CARD OFF button, set it before the backup processing. After setting,
execute each backup processing.
Restoration setting
Turn on bit 2 of SD955 (Automatic restoration with SD CARD OFF button).
Bit 2 of SD955
Off
On
Optionally, set the other restoration settings. ( Page 324 Restoration target data,  Page 324 Restoration of the special
relay and special register,  Page 325 Operation setting after restoration)
The bit 13 of SD955 (Latest data) is not used because the automatic restoration with the SD CARD OFF
button restores the latest backup data out of multiple backups saved.
Settings
Turn on bit 2 of SD955 (Restoration function setting).
Backup after setting
Refer to each backup function and execute the backup processing. ( Page 316 Backup processing triggered by turning
on SM1351,  Page 317 Automatic backup using SD944)

Checking backup errors

When an error has occurred, a diagnostic error is not detected and an error code is stored in SD953 (Backup error cause).
( Page 552 List of Error Codes)
Setting of the automatic restoration with the SD CARD OFF
button
Disable
Enable
22 CPU MODULE DATA BACKUP/RESTORATION FUNCTION
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22.1 Backup Function
22