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

1.19

Error History Function

Common
This function stores up to the latest 16 errors and alarms that occurred in the A/D converter module to the buffer memory
area.
Operation
When an error occurs, the error code and the error time are stored from Error history 1 (Un\G3600 to Un\G3609) in order.
When an alarm occurs, the alarm code and the alarm time are stored from Alarm history 1 (Un\G3760 to Un\G3769) in order.
Error time and alarm time are stored as follows:
Ex.
The following shows Error history 1 and Alarm history 1.
• Details of the error history
b15 ...
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
• Details of the alarm history
b15 ...
Un\G3760
Un\G3761 First two digits of the year
Un\G3762 Month
Un\G3763 Hour
Second
Un\G3764
Millisecond (higher-order digits)
Un\G3765
Un\G3766
Un\G3769
Item
Error code or alarm code
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)
System area
*1 Values stored when a flash memory error (error code: 3030H) occurs at 12:34:56.789 on Thursday, December 24th, 2015.
b8 b7 ...
Error code
Last two digits of the year
Day
Minute
Day of the week
Millisecond (lower-order digits)
System area
b8 b7 ...
Alarm code
Last two digits of the year
Day
Minute
Day of the week
Millisecond (lower-order digits)
System area
Storage contents
An error code or alarm code is stored.
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.

b0
b0
1.19 Error History Function
1
*1
Storage example
3030H
2015H
1224H
1234H
56H
4H
7H
89H

1 FUNCTIONS
135