Error History Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

1.38

Error History Function

The errors or alarms that occurred in the temperature control module are stored in the buffer memory as history. Up to 16
errors and 16 alarms can be stored.
Operation
When errors occur, error codes and error times of the errors are stored in 'Error history No.1' (Un\G3600 to Un\G3609) in
order.
When alarms occur, alarm codes and alarm times of the alarms are stored in 'Alarm history No.1' (Un\G3760 to Un\G3769) in
order.
• Error code assignment
b15 to
Un\G3600
Un\G3601 First two digits of the year
Un\G3602
Month
Un\G3603 Hour
Second
Un\G3604
Millisecond (higher-order digits)
Un\G3605
Un\G3606
Un\G3609
• Alarm code assignment
b15 to
Un\G3760
Un\G3761 First two digits of the year
Un\G3762
Month
Hour
Un\G3763
Second
Un\G3764
Millisecond (higher-order digits)
Un\G3765
Un\G3766
Un\G3769
Ex.
Storage example of error history and alarm history data
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 Value stored when an error occurs at 12:34:56.789 on Saturday, January 31, 2015
The start address of the error history where the latest error has been stored can be checked in 'Latest address of error history'
(Un\G2).
The start address of the alarm history where the latest alarm has been stored can be checked in 'Latest address of alarm
history' (Un\G4).
b8 b7 to
Error code
Last two digits of the year
Day
Minute
Day of the week
Millisecond (lower-order digits)
System area
b8 b7 to
Alarm code
Last two digits of the year
Day
Minute
Day of the week
Millisecond (lower-order digits)
System area
Stored 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, and Saturday: 6
Stored in BCD code.
b0
b0
1.38 Error History Function
1
*1
Storage example
2015H
131H
1234H
56H
6H
7H
89H
1 FUNCTIONS
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