Restoration Function - Mitsubishi Electric Q01UCPU User Manual

3.32.2

Restoration function

This function restores data backed up to an SD memory card as necessary.
(a) Restoration target folders
Set a folder to be restored from backup data in an SD memory card with SD919 to SD921. The latest backup
data can be restored with bit13 of SD918.
Special register
Bit13 of SD918
SD919, SD920
SD921
*1 The latest data indicates the backup data in the date stamp folder which is the closest to the present time, and has the
rearmost serial number.
(b) Restoration target data
Set the restoration target data with SD917.
Value of SD917
0
1
2
(c) Restoration of the special relay and special register
Set whether to restore the special relay and special register with bit14 of SD918.
Bit14 of SD918
On
Off
Note that the following special relay areas and special register areas, which are used for the CPU module
backup/restoration function, are not restored even if bit14 of SD918 is on.
• SM916, SM922, SM924, SM1925, SM1926, SM1928, SM1929, SM1931, SD916, SD922, SD1925,
SD1926
Sets the function setting of restoration with bit patterns.
Off: Restores the specified data in the restoration target folders.
*1
On: Restores the latest data.
Specifies the date of the folder to be restored in BCD.
SD919: Year, SD920: Month and day
Specifies the numbered folder (00001 to 32767) to be restored.
Restoration target data setting
All target data
Device data only
All target data except for device data
Restores the special relay and special register.
Does not restore the special relays and special registers.
CHAPTER 3 FUNCTIONS
Description
Description
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