Mitsubishi Electric SW0DNC-MNETH-B User Manual page 187

14 TROUBLESHOOTING
1)
Is the station number
set correctly?
YES
Check with a self-loopback test at the
faulty station.
Is there any error?
YES
Check the link cables before and after
the faulty station using a station-to-
station test.
Replace the faulty link cable.
Did the data link
return to normal?
YES
Complete
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MNETH utility
Set to "ONLINE" in the
"Board information" setting
screen.
NO
Did the data link
return to normal?
NO
Is it a PC?
MNETH utility
Power off the PC, then set
the correct station number.
Power on the power again.
NO
Did the data link
return to normal?
NO
Replace the MELSECNET/H board
network module of the faulty station.
NO
Did the data link
return to normal?
NO
Consult with the dealer regarding
the problem.
2)
User program
Stop the user program and
perform the same operation
as for the MNETH utility.
YES
NO
YES
User program
Power off the PC, then set
the correct station number.
Power on the power again.
YES
YES
MELSEC
3)
Set the PLC data link mode
to ONLINE, and reset.
reset.
Complete
Power off the PLC, then set
the correct station number.
Power on the power again.
Complete
Complete
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