Mitsubishi Electric MELSEC iQ-R-R04CPU - Page 273

15 CPU MODULE DATA BACKUP/RESTORATION FUNCTION
15.1 Backup Function
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■Operation of the special relay and special register
The following figure shows the operations of the special relay and special register of when the upper limit value for the number
of CPU module backup data has been set.
Check the following at the timing on when the bit 5 of SD944 (Enable the upper limit value for the number of CPU module
backup data) is turned on, and enable the upper limit value for the number of CPU module backup data.
• The backup processing has not been executed (when no backup data folder (CPU data folder) exists in the SD memory
card).
• The value set in SD1353 (Upper limit value setting for the number of CPU module backup data) is within the range (1 to
100).
(1) The upper limit value for the number of CPU module backup data is set. (0  10)
ON
SM1351
OFF
END END
OFF
SM1350
SD944(bit5)
010
0 10
ON
(1)
SD1353
SD960
ON
END
OFF