Mitsubishi Electric MELSEC-Q series User Manual page 75

(2) Checking the error history
The start address of the latest error history can be checked in Latest address of error history (Un\G1800).
1: When the third error occurred
Ex.
The third error is stored in Error history No.3, and the value "1830" (start address of error history No.3) is
stored in Latest address of error history (Un\G1800).
Latest address of error history
(Un\G1800)
Address
1810
1820
1830
1960
The start address of the error history
where the latest error is stored is stored.
Error history No.1
1st error
Error history No.2
2nd error
Error history No.3
(Empty)
Error history No.16
(Empty)
CHAPTER 4 FUNCTIONS
Details of error history
An error history consists of the following
data.
Error code
First two digits Last two digits
of the year of the year
Month Day
Hour Minute
Second
Day of the week
New
3rd error
4
Error
time
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