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(16)Error history (address: 0A00
H
to 0AEF
H
)
Up to 15 errors occurred in the module are stored.
The following shows the contents stored in Error history 1 (address: 0A00
H
to 0A0F
H
).
*1 Those are values when the second error occurs at 13:30:50, September 1st, 2012.
*2 The clock information of the error that occurred is based on the clock information acquired from the CPU module of the
master station.
When an error has occurred before the clock information is acquired from the CPU module, the error time is not
recorded.
Error history 2 to Error history 15 (address: 0A10
H
to 0AEF
H
) are stored in the same format as that of Error
history 1 (address: 0A00
H
to 0A0F
H
).
For the error codes, refer to the following.
• Error Code List ( Page 138, Section 11.2)
(a) Storage order
The latest error is stored in Error history 1 (address: 0A00
H
to 0A0F
H
).
Errors that occurred in the past are stored in Error history 2 to Error history 15 (address: 0A10
H
to 0AEF
H
) in
reverse chronological order.
If 16 or more errors occur, errors are deleted from the oldest.
Item Contents
Storage
example
*1
Error code The error code of the error that occurred is stored. -
Order of generation The order of error occurrence is stored.
2
H
First two digits of the
year/Last two digits of the
year
*2
The items on the left are stored in BCD code.
2012
H
Month/Date
*2
0901
H
Hour/Minute
*2
1330
H
Second/00
H
(Fixed)
*2
5000
H
CH1 Digital value
The value of CH Digital value (RWw2 to RWw5) when an error
occurs is stored.
-
CH2 Digital value
CH3 Digital value
CH4 Digital value
b15
to
b8 b7 b0
to
Error code
First two digits of the year
Last two digits of the year
Month
Date
Hour Minute
Second
System area
Order of generation
CH1 Digital value
CH2 Digital value
CH3 Digital value
00
H (Fixed)
CH4 Digital value
0A00
H
0A01H
0A02H
0A03H
0A04H
0A05H
0A06H
0A07H
0A08H
0A09H
0A0AH
0A0FH
to