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MELSEC-
6 TROUBLESHOOTING
6.6.6 Troubleshooting when the "L ERR." LED of the CC-Link/LT remote I/O station has
turned on/is flickering
For troubleshooting of the remote device station, refer to the user’s manual for your
remote device station.
The "L ERR." LED of the
CC-Link/LT remote I/O station
turned on /is flickering
Has any
setting switch setting
been changed after
power-on?
Return to the previous setting.
NO (Not changed)
Correct the wiring of the
communication cables.
YES (Changed)
Consult your local Mitsubishi
service center or representative,
explaining a detailed description
of the problem.
Complete
1 : Check for a short, reversed connection, wire breakage, insulation displacement status, terminating resistors, overall distance,
drop line distance (overall drop line length, maximum drop line length) and peripheral environment (noise, etc.).
Are there any
problems on the line? 1
YES (With problem)
NO (Without problem)
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