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22 DATA BACKUP/RESTORATION FUNCTION
22.1 Backup Function
Initializing target data
When backing up with SM1351 ON (CPU module auto exchange mode), set whether or not to initialize the drive other than
the SD memory card at the time of restoration by the CPU module auto exchange. Set with SD9352 (CPU module auto
exchange function setting) b1 (initialize during CPU module auto exchange function).
This setting is valid only when the SD9351 (CPU module automatic replacement function Restore target data setting) value is
1 (restoration target data is all target data).
The settings are reflected onto the system file for CPU module auto exchange function.
Setting of operation after restoration
When using backup processing triggered by turning on SM1351 (CPU module auto exchange mode), after restoration is
executed with CPU module auto exchange, the CPU module operation can be continued from the backed up state or from the
initialized state. This can be set with SD9352 (CPU module auto exchange function setting) b15 (setting of operation after
CPU module auto exchange function). The operation of each item using the operation setting after restoration is shown below.
*1 When a battery is not mounted, the start of the SFC program is initial start regardless of setting of operation after restoration.
The settings are reflected onto the system file for CPU module auto exchange function.
Note that this setting is invalid since the device initial value file, SFC program, and event history file are not restored when the
value in SD9351 (CPU module automatic replacement function Restore target data setting) is 0 (restoration target data are
only device/label data).
b1 of SD9352 Restoration target data setting
OFF Do not initialize.
ON Initialize.
Item Setting of operation after restoration by CPU module auto exchange
Continue operation from backed up state
(b15 of SD9352 = ON)
Operate from initialized state
(b15 of SD9352 = OFF)
Initial device value Do not set device initial values after restoration. Set device initial values after restoration. (Device data from
backed up state is overwritten with device initial values.)
SFC program When "Resume Start" was selected before data backup, the
SFC program is resumed after restoration processing.
*1
The SFC program is not resumed after restoration processing
even though "Resume Start" was selected before data
restoration.
Event history Set event history during backup. Do not set backup event history, and create new file.
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