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

1.16

Error History Function

Common
Up to 16 errors and alarms that have occurred in the D/A converter module are stored in the buffer memory as the error and
alarm history.
Operation
When an error occurs, the error code and the error time are stored from Error history No.1 (Un\G3600 to Un\G3609) in order.
When an alarm occurs, the alarm code and the alarm time are stored from Alarm history No.1 (Un\G3760 to Un\G3769) in
order. Error time and alarm time are stored as follows:
Ex.
The following shows Error history No.1 and Alarm history No.1.
• Details of the error history
b15
Un\G3600
Un\G3601 First two digits of the year
Un\G3602
Un\G3603
Un\G3604
Millisecond (upper)
Un\G3605
Un\G3606
Un\G3609
• Details of the alarm history
b15
Un\G3760
Un\G3761 First two digits of the year
Un\G3762
Un\G3763
Un\G3764
Millisecond (upper)
Un\G3765
Un\G3766
Un\G3769
Item
Error code or alarm code
First two digits of the
year
Month
Hour
Second
Day of the week
Millisecond (higher-order digits)
Millisecond (lower-order digits)
System area
*1 Values stored when a flash memory error (error code: 3030H) occurs at 12:34:56.789 on Monday, October 31st, 2016.
1 FUNCTIONS
102
1.16 Error History Function
... b8 b7
Error code
Month
Hour
Second
System area
... b8 b7
Alarm code
Month
Hour
Second
System area
Storage contents
An error code or alarm code is stored.
Last two digits of the Stored in BCD code.
year
Day
Minute
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.

... b0
Last two digits of the year
Day
Minute
Day of the week
Millisecond (lower)
... b0
Last two digits of the year
Day
Minute
Day of the week
Millisecond (lower)
*1
Storage example
3030H
2016H
1031H
1234H
56H
1H
7H
89H
