Mitsubishi Electric MELSEC-L SSCNETIII/H, User Manual

Page: 89 / 154

87
CHAPTER 11 TROUBLESHOOTING
11
11.
3 Sy
st
em Error
Hist
o
ry
11.3
System Error History
The history of the errors that occurred in the past can be checked so that corrective actions can be taken for each of
them. Reset of the head module and errors occurred before power off can be also checked. On a single screen, error
history of not only the head module but also the intelligent function modules installed with the head module can be
checked.
Data of up to 100 errors can be collected. (Once the number of collected error logs exceeds 100, the oldest error logs
and sequentially thereafter will be deleted.)
(1) Checking the error history
• If error code 9900 is detected, check the error and solution of error code A***H detected at the same time to
troubleshoot the problem. Concurrently with error code 9900, error code A***H is also detected.
• If the same error occurred continuously, only the first error record is displayed in the "Error History" window.
• Selecting a module in the "Main Block" area in "System Monitor" and clicking the button will
also open the "Error History" window. In this case, only the error history of the module selected in "Main Block" is
displayed. For details on errors of intelligent function modules, refer to the following. (
 User's manual for the
intelligent function module used)
1.
Open the "Error History" window of GX Works2.
[Diagnostics]  [System Monitor] 
button
The error history is displayed. Check the error and
solution and troubleshoot the problem.
GX Works2
Error history display
19:29
19:33
19:34
19:36
Module A
Head module
Module B
Module A
A1
C1
B1
A2
Time Module Error code
Head module
Module B Module A
Error history of the head module and intelligent
function modules connected to the head module
Displays the details and solution of the error selected in "Error History List."
Displays the error history of the module.