Mitsubishi Q01CPU User Manual

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12.2 Troubleshooting
12.2.21 Flowchart for when CPU module does not start
12
TROUBLESHOOTING
12.2.21 Flowchart for when CPU module does not start
The troubleshooting flow of a CPU module that does not start upon power-on is described
here.Note12
Diagram 12.18 Flowchart for when CPU module does not start
Note12
Basic
Note12.13
Basic
Note12.13
Basic
Note12.14
Correct the connection of the extension cable.
End
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO YES
RESET position
The CPU module does not start.
Is the "POWER" LED
of the power supply module lit
(green)?
NO
Check the wiring and turn ON all power
supply modules.
YES
Connect peripheral deivce.
Perform PLC diagnostics and troubleshoot
according to the results of the diagnosis.
Is the direction of
the exension cable correct?
(Check if IN-IN or OUT-OUT
connection is made.)
Is communication
with peripheral device
succeeded?
Is the RESET-L.
CLR switch of the CPU module
in the RESET position?
In other than RESET position
Change the power supply module
and check if the LED lights up (green).
Does the CPU module start?
Cancel the RESET position.
Hardware error of power
supply module .
YES
NO
YES
Does the CPU module start?
Does the CPU module start?
(When off)
(When on (red))
Flowchart for when
the "POWER" LED turns off.
Flowchart for when
the "POWER" LED turns on (red).
Are all power
supply modules turned on?
Is the power supply module
connected correctly?
The following pleces of hardware may be faulty.
1) CPU module
2) Main base unit, extension base unit
3) Extension cable
4) I/O Module (If one is installed)
5) Interlligent function module (If one is installed)
6) Network module (If one is installed)
Perform operations in due order, starting with the minimum system
where the power supply module and CPU module are mounted on the
main base unit.
If the module will not work, please consalt your local nearest Mitsubishi
or representative, explaining a detailed discription of the problem.
Does the CPU module start?
Note12.13
Note12.13
Note12.13
Note12.14
Note12.13
Note12.13
Section 12.2.5
Section 12.2.6
In the case of Basic model QCPU, it corresponds to the CPU module (power supply section).
Basic
Note12.13
In the case of Basic model QCPU, check if the RUN/STOP/RESET switch of CPU module is in
the RESET position.
Basic
Note12.14

Mitsubishi Q01CPU Specifications

General

Brand	Mitsubishi
Model	Q01CPU
Category	Controller
Language	English