Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 167

Alarm history
Up to 16 alarms that occurred in the module are recorded.
b15 to
Un\G3760
Un\G3761 First 2 digits of date
Un\G3762 Month
Un\G3763 Time
Second
Un\G3764
Un\G3765 Millisecond (upper)
Un\G3766
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, 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 table shows the buffer memory address of this area.
Buffer memory name
Alarm history
Alarm history (If using FX3 allocation mode)
b8 b7 to
Alarm code
Last 2 digits of date
Day
Minute
Day of the week
Millisecond (lower)
System area
CH1
3760 to 3919
3760 to 3919
b0
CH2 CH3
Appendix 4 Buffer Memory Areas
*1
Storage example
2014H
630H
1234H
56H
1H
7H
89H
CH4
A
APPX
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