Справочник Пользователя для Mitsubishi Electronics Q25HCPU
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MELSEC-Q
11 TROUBLESHOOTING
11.2.3 Flowchart for when the "MODE" LED is flickering
The following shows the flowchart to be followed when the "MODE" LED of the CPU
module flickers at PLC power-on, at operation start or during operation.
"MODE" LED is flickering
YES
NO
Is the RESET/L.CLR
switch of the CPU module in
the neutral position?
Did you make forced
ON/OFF setting?
Neutral position
Cancel forced ON/OFF.
Hardware fault
Check operations in the order
starting from the minimum system.
If the module will not work,
please consult your local Mitsubishi
service center or representative,
explaining a detailed description
of the problem.
Check operations in the order
starting from the minimum system.
If the module will not work,
please consult your local Mitsubishi
service center or representative,
explaining a detailed description
of the problem.
Is the "MODE" LED turned on?
Move the RESET/L.CLR switch to the
neutral position.
neutral position.
RESET position
Is the "MODE" LED turned on?
Completion
NO
NO
YES
YES