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15 CPU MODULE DATA BACKUP/RESTORATION FUNCTION
■Backup/restoration target device data
: Available, : Not available
*1 Whether to restore the device or not can be set with the bit 14 of SD955 (Restoration function setting).
*2 Values may be overwritten to the areas used by the system after the restoration processing.
*3 Includes local devices.
*4 Includes the local index register.
*5 Device data may be overwritten depending on the mounting status (I/O refresh) of each module or the refresh settings.
Classification Device name Symbol Backup
*5
Restoration
*5
User device Input X
Output Y
Internal relay M
*3
*3
Link relay B
Annunciator F
Link special relay SB
Edge relay V
*3
*3
Step relay S
Timer T
*3
*3
Retentive timer ST
*3
*3
Long timer LT
*3
*3
Long retentive timer LST
*3
*3
Counter C
*3
*3
Long counter LC
*3
*3
Data register D
*3
*3
Link register W
Link special register SW
Latch relay L
System device Function input FX
Function output FY
Function register FD
Special relay SM
*1*2
Special register SD
*1*2
Link direct device Link input Jn\X
Link output Jn\Y
Link relay Jn\B
Link special relay Jn\SB
Link register Jn\W
Link special register Jn\SW
Module access device Module access device Un\G
CPU buffer memory access
device
CPU buffer memory access device U3En\G
*2
U3En\HG
*2
Index register Index register Z
*4
*4
Long index register LZ
*4
*4
File register File register R/ZR
Refresh data register Refresh data register RD
Nesting Nesting N
Pointer Pointer P
Interrupt pointer I
Other devices Network No. specification device J
I/O No. specification device U
SFC block device BL
SFC transition device TR
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