Mitsubishi Electric MELSEC iQ-R Series User Manual page 169

Alarm history
Up to 16 alarms that occurred in the module are recorded.
to
b15
Un\G3760
Un\G3761
First two digits of the year
Un\G3762
Month
Un\G3763
Hour
Un\G3764
Second
Un\G3765
Millisecond (Upper)
Un\G3766
to
Un\G3769
Item
First two digits of the year/Last two digits
of the year
Month/Day
Hour/Minute
Second
Day of the week
Millisecond (upper)
Millisecond (lower)
*1 Values stored when an alarm occurs at 12:34:56.789 on Monday, June 30th, 2014.
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Alarm history
Alarm history (When the Q compatible mode
function is used)
Save data type setting
This area saves and restores the offset/gain setting value in user range setting.
Only the R60DA4 can use this area.
b15 b14 b13 b12 b11 b10 b9
0 0 0 0 0 0 0
(2)
(1) 0: User range setting (voltage), 1: User range setting (current)
(2) b4 to b15 are fixed to 0.
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Save data type setting
Save data type setting (When the Q compatible
mode function is used)
■Default value
The default value is 0 for all channels.
b8 b7
Alarm code
Last two digits of the year
Minute
Day of the week
Millisecond (Lower)
System area
Storage contents
Stored in BCD code.
One of the following values is stored in BCD code.
Sunday: 0, Monday: 1, Tuesday: 2, Wednesday: 3
Thursday: 4, Friday: 5, Saturday: 6
Stored in BCD code.
No.1 to No.16
3760 to 3919
3760 to 3919
b8 b7 b6 b5 b4 b3 b2
0 0 0 0 0 CH4 CH3 CH2
(1)
CH1 CH2
4002
200
b0
to
Day
b1 b0
CH1
CH3 CH4 CH5
*1
Storage example
2014H
630H
1234H
56H
1H
7H
89H
CH6 CH7 CH8
APPENDICES
Appendix 3 Buffer Memory
A
167