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

1.11

Error History Function

This function stores up to the latest 16 errors and alarms that occurred in the A/D converter module in 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
First two digits of the year
Un\G3601
Un\G3602
Un\G3603
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
Un\G3763
Un\G3764
Millisecond (higher-order digits)
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 CH1 range setting range error (error code: 1900H) occurs at 12:34:56.789 on Thursday, December 24th, 2015.
1 FUNCTIONS
48
1.11 Error History Function
b8 b7
...
Error code
Month
Hour
Second
Millisecond (lower-order digits)
System area
... b8 b7
Alarm code
Month
Hour
Second
Millisecond (lower-order digits)
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
... b0
Last two digits of the year
Day
Minute
Day of the week
*1
Storage example
1900H
2015H
1224H
1234H
56H
4H
7H
89H
