Mitsubishi Electric MELSEC iQ-R Series User Manual page 168

Error history
Up to 16 errors that occurred in the module are recorded.
b15
Un\G3600
Un\G3601
First two digits of the year
Un\G3602
Un\G3603
Un\G3604
Un\G3605
Millisecond (Upper)
Un\G3606
to
Un\G3609
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 error 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
Error history
Error history (When the Q compatible mode
function is used)
APPENDICES
166
Appendix 3 Buffer Memory
to b8 b7
Error code
Last two digits of the year
Month
Hour
Second
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
3600 to 3759
1810 to 1969
to b0
Day
Minute
Day of the week
Millisecond (Lower)
*1
Storage example
2014H
630H
1234H
56H
1H
7H
89H