Error Log Function - Mitsubishi MELSEC L Series User Manual

8.7

Error Log Function

This function stores a history of errors and alarms that occurred in the D/A converter module to the buffer memory
(Un\G1810 to Un\G1969).
A maximum of 16 errors and alarms can be stored.
(1) Process of the error log function
The error code and the time of error occurrence are stored in the buffer memory address, starting from error
history No.1 (start address Un\G1810) and sequentially thereafter.
(2) Checking error history
You can check the start address of the latest stored error at Latest error code address (Un\G1800)
1. When the third error occurs:
Ex.
The third error is stored in error history No.3, and the value "1830" (start address of error history No.3) is stored to
Latest error code address (Un\G1800).
Latest error code address
(Un\G1800)
Address
The start address of the error history
where the latest error is stored is stored.
1810
Error history No.1
1st error
1820
Error history No.2
2nd error
1830
Error history No.3
(Empty)
1960
Error history No.16
(Empty)
CHAPTER 8 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
8
Error
occurrence
time
61