Mitsubishi Electric MELSEC iQ-R Series User Manual page 331

Alarm history
Up to 16 alarms that occurred in the module are recorded.
b15 to
Un\G3760
Un\G3761 First two digits of the year
Un\G3762 Month
Un\G3763 Hour
Un\G3764
Second
Un\G3765 Millisecond (higher-order digits)
Un\G3766
to
Un\G3769
Item Stored contents
First two digits of the year/last Stored in BCD code.
two digits of the year
Month/day
Hour/minute
Second
Day of the week One of the following values is stored in BCD code:
Sunday: 0, Monday: 1, Tuesday: 2, Wednesday: 3, Thursday: 4, Friday: 5, and Saturday: 6
Millisecond (upper) Stored in BCD code.
Millisecond (lower)
*1 Value stored when an alarm occurs at 12:34:56.789 on Monday, June 30, 2014
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory area name
Alarm history
Alarm history (in the Q compatible mode)
b8 b7 to
Alarm code
Last two digits of the year
Day
Minute
Day of the week
Millisecond (lower-order digits)
System area
No. 1 to No. 16
3760 to 3919
2160 to 2319
b0
Storage example
2014H
630H
1234H
56H
1H
7H
89H
Appendix 3 Buffer Memory Areas
*1
A
APPX
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