User`s manual

6 - 3
MELSEC-
A
6 TROUBLESHOOTING
(5) When the AJ65SBT-64AD "L ERR." LED flickers at fixed intervals
Check item Corrective action
Has the station number or transmission speed
setting switch position been changed during
normal operation?
After correcting the setting switch setting, switch
power on again.
Is the station number or transmission speed
setting switch faulty?
If the "L ERR." LED has begun flickering without
switch setting change during operation, the possible
cause is a hardware failure. Please consult your local
Mitsubishi representative.
(6) When the AJ65SBT-64AD "L ERR." LED flickers at unfixed intervals
Check item Corrective action
Have you forgotten fitting the terminal resistor?
Check whether the terminal resistor is fitted. If it is not
connected, connect it and switch power on again.
Is the module or CC-Link dedicated cable
affected by noise?
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.
(7) When the AJ65SBT-64AD "L ERR." LED is on
Check item Corrective action
Are the station number and transmission speed
correct?
Set the correct station number and transmission
speed.