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22 DATA BACKUP/RESTORATION FUNCTION
22.2 Restoration Function
Conditions for executing automatic restoration and CPU module auto exchange
The restoration executed for automatic restoration using SD955 and restoration with CPU module auto exchange differs
according to the following conditions.
Time required for completing the restoration processing
It may take some time for restoration to finish if Ethernet communication is in progress.
The relation between the data to be restored and the firmware version of the CPU
module
Do not restore the program with the program capacity setting of 128000 steps to the FX5U/FX5UC CPU module with the
firmware version earlier than "1.100". The program may not operate normally. For the program capacity setting, refer to
Page 50 Program Capacity Setting.
Auto restoration request
(b0 of SD955)
CPU module auto exchange
function enable/disable flag
(SM9350)
Presence of system file for
CPU module auto exchange
function
Executed restoration
ON OFF (Enable) Existing Restoration triggered by CPU module auto
exchange
ON OFF (Enable) None Automatic restoration using SD955
ON ON (Disable) None Automatic restoration using SD955
ON ON (Disable) Existing Automatic restoration using SD955
OFF OFF (Enable) Existing Restoration triggered by CPU module auto
exchange
OFF OFF (Enable) None No process
OFF ON (Disable) Existing No process
OFF ON (Disable) None No process
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