Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 287

(b) Operating procedure (specifying day and time)
The data is automatically backed up at the specified day and time.
1.
To specify the upper limit value of the number of backup data, set the upper limit value setting.
(The setting method and operating procedure are the same as the backup by turning on SM1926.)
Page 283, Section 3.32.1 (2) (a))
2.
Set the day and time with SD912 and SD913.
Special register
SD912
SD913
3.
To retry the automatic backup, turn on bit10 of SD910 (Backup function setting). For the retry of
the automatic backup, refer to the following.
Page 284, Section 3.32.1 (3) (a)
4.
Turn on bit0 of SD910.
If a backup is completed with an error and SM916 (Backup error check flag) turns on, check SD916 (Cause of
error occurred during backup), take corrective action, and then backup again as necessary.
Remark
In months that does not have the day specified with SD912 (Day and time setting for automatic backup [day]), no error
occurs and automatic backup is not executed. For example, if SD912 is "31", the months when the automatic backup is
executed shall be January, March, May, July, August, October, and December.
(c) Operating procedure (specifying time and days of the week)
The data is automatically backed up at the specified time and days of the week.
1.
To specify the upper limit value of the number of backup data, set the upper limit value setting.
(The setting method and operating procedure are the same as the backup by turning on SM1926.)
Page 283, Section 3.32.1 (2) (a))
2.
Set the time and days of the week with SD914 and SD915.
Special register
SD914
SD915
3.
To retry the automatic backup, turn on bit10 of SD910 (Backup function setting). For the retry of
the automatic backup, refer to the following.
Page 284, Section 3.32.1 (3) (a)
4.
Turn on bit1 of SD910.
If a backup is completed with an error and SM916 (Backup error check flag) turns on, check SD916 (Cause of
error occurred during backup), take corrective action, and then backup again as necessary.
Set the day when the data is automatically backed up in BCD.
Set the time (hour and minute) when the data is automatically backed up in BCD.
Set the time (hour and minute) when the data is automatically backed up by BCD.
Set the days of the week when the data is automatically backed up.
b0: Sunday, b1: Monday, b2: Tuesday, b3: Wednesday, b4: Thursday, b5: Friday, b6:
Saturday
CHAPTER 3 FUNCTIONS
Description
Description
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