11 -
11
11. TROUBLESHOOTING
11.2.10 Flow for actions when the CPU module is not started up
The following shows the flow when the CPU module is not started up.
NO
YES
NO
YES
NO
NO
NO
YES
NO
YES
NO
YES
NO
YES
YES
Complete
YES
The CPU module is not started up.
Is the power supply module
LED on?
Are all the power of
the power supply modules on?
Is the power supply module
wired correctly?
Try to connect the peripheral device.
Is it available to
communicate with the
peripheral device?
Is the extension
cable connected to the incorrect
direction? (Connected IN and IN,
or OUT and OUT?)
Is the RESET/L.CLR switch of
the CPU module at RESET?
at RESET
Not at RESET
Switch the power supply module and
confirm the LED lights.
Is CPU module up?
See Flowchart for actions when the
POWER LED is turned off
(Refer to .)
Review the wiring and turn all the power
supplies on.
Is CPU module up?
Is CPU module up?
Is CPU module up?
Make the PLC diagnosis, and execute
the troubleshooting according to the result.
Set the RESET/L.CLR switch to the center
position.
Connect the extension cable.
Hardware error of the power
Possible hardware errors are described below.
1) CPU module
2) Main base unit, Extension base unit
3) Extension cable
4) Network module (Only when installed)
For the malfunctioning module even after executed the serial
operation check from the minimum system, please consult your
local Mitsubishi service center or representative, explaining
a detailed description of the problem.
Содержание MELCEC Q Series
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