Mitsubishi Electric MELSEC-L SSCNETIII/H User Manual page 87

(a) Checking for failure of the head module
1.
Selecting the head module in "System Monitor" and
clicking the
Diagnostics" window.
2.
Select the error that is occurring, and click the
button to check the cause and action.
When data link cannot be performed even though no
failure is shown in "PLC Diagnostics", open the
SSCNET III Communication Condition Monitor window
of MT Developer2 and take action. ( Page 77,
CHAPTER 9)
3.
Reset of the head module and errors occurred
before power off can be checked in the "Error
History" window.
[Diagnostics]  [System Monitor] 
button
In the single "Error History" window, the error history of
the head module and intelligent function modules can
be viewed. ( Page 87, Section 11.3)
4.
If data link is not available even after
troubleshooting by the above operation, perform
the following.
• Checking with SSCNET III Communication Condition
Monitor by connecting MT Developer2 to the Motion
controller ( Page 77, CHAPTER 9)
• Checking the LEDs ( Page 89, Section 11.4)
• Troubleshooting by Symptom ( Page 91, Section 11.5)
CHAPTER 11 TROUBLESHOOTING
button will open the "PLC
11
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