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4 FUNCTIONS
4.13 Error History
4.13
Error History
An error history occurred in the safety main module can be saved in the error history saving area in the buffer memory.
Up to 16 error history records can be saved.
Operation
An error occurred in a safety extension module is stored in the buffer memory as error history.
Up to 16 error history records can be saved for each device.
When an error occurs, the error code and the error time are stored from 'Error history No.1' (Un\G700) in ascending order.
The configuration of the buffer memory is as follows.
• Details of buffer memory assignment
Ex.
Storage example of error history
*1 These values assume that an error occurred at 10:35 and 40.628 milliseconds on Tuesday, January 31st, 2017.
Item Description Storage example
*1
First two digits of the year/
Last two digits of the year A value is stored in BCD code. 2017H
Month/Day 0131H
Hour/Minute 1035H
Second 40H
Day of the week One of the following values is stored in BCD code.
• Sunday: 0
• Monday: 1
• Tuesday: 2
• Wednesday: 3
• Thursday: 4
• Friday: 5
• Saturday: 6
2H
Millisecond (upper) A value is stored in BCD code. 6H
Millisecond (lower) 28H
to
b0 b7 b8 b15
to
Un\G705
Un\G709
Un\G706
Un\G701
Un\G702
Un\G703
Un\G704
Un\G700
to
Error code
First two digits of the year
Last two digits of the year
Month Day
Hour
Minute
Second
Day of the week
System area
Millisecond (upper)
(Millisecond (lower)
to
b0 b7 b8 b15
to
Un\G705
Un\G709
Un\G706
Un\G701
Un\G702
Un\G703
Un\G704
Un\G700
to
Error code
First two digits of the year
Last two digits of the year
Month Day
Hour
Minute
Second
Day of the week
System area
Millisecond (upper)
(Millisecond (lower)