Mitsubishi AJ65BT-64RD3 User Manual page 127

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6 TROUBLESHOOTING
(5) When the AJ65SBT-64AD "L ERR." LED flickers at fixed intervals
Check item
Has the station number or transmission speed
setting switch position been changed during
normal operation?
Is the station number or transmission speed
setting switch faulty?
(6) When the AJ65SBT-64AD "L ERR." LED flickers at unfixed intervals
Check item
Have you forgotten fitting the terminal resistor?
Is the module or CC-Link dedicated cable
affected by noise?
(7) When the AJ65SBT-64AD "L ERR." LED is on
Check item
Are the station number and transmission speed
correct?
After correcting the setting switch setting, switch
power on again.
If the "L ERR." LED has begun flickering though
switch setting change was not made during operation,
the possible cause is a hardware fault. Contact your
nearest Mitsubishi representative.
Check whether the terminal resistor is fitted. If it is not
connected, connect it and switch power on again.
Earth both ends of the shield wire of the CC-Link
dedicated cable to the protective earth conductor via
SLD and FG of the corresponding module.
Earth the FG terminal of the module without fail.
When carrying out wiring in piping, earth the pipe
without fail.
Set the correct station number and transmission
speed.
6 - 3
MELSEC-A
Corrective action
Corrective action
Corrective action