15 CPU MODULE DATA BACKUP/RESTORATION FUNCTION
15.2 Restoration Function
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15.2 Restoration Function
This function restores backup data in the SD memory card to the CPU module.
Restoration target folder
Set restoration target data among backup data in the SD memory card with SD956 (Restoration target date folder setting) to
SD958 (Restoration target number folder setting). The latest backup data can be restored with the bit 13 of SD955
(Restoration function setting).
*1 The latest data is the backup data with the largest number in the latest date folder.
Restoration target data
Restoration target data is set with SD954 (Restoration target data setting).
Restoration of the special relay and special register
Set whether to restore the special relay and special register with the bit 14 of SD955.
The following special relay/register areas, which are used for the CPU module data backup/restoration function, will not be
restored even though bit14 of SD955 is on.
• SM953, SM959, SM961, SM1350, SM1351, SM1353, SM1354, SM1356, SD953, SD959, SD1350, SD1351, SD1353
Special register Description
Bit 13 of SD955 Set the restoration function setting with bit patterns.
Off: Data specified with the restoration target folders is restored.
On: The latest data is restored.
*1
SD957, SD956 Specify a date folder of the restoration target data in BCD.
SD957 (upper): Year, SD956 (lower): Month and date
SD958 Specify the folder number (00001 to 32767) of restoration target data.
Value of SD954 Restoration target data setting
0 All target data
1 Only device/label data
2 All target data excluding device/label data
Bit 14 of SD955 Restoration target data setting
Off The special relay and special register are not restored.
On The special relay and special register are restored.
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