Mitsubishi Melsec-Q Series User Manual page 344

(From the previous page)
How is
the "SD/RD" LED of the CPUmodule?
Flashing
How is
the "POWER" LED of the power
supply module?
On (green)
To diagnose the built-in Ethernet port, power on
the CPU again or reset it.
How is
the "ERR." LED of the CPU module?
Off
Change to USB connection to read
CPU setting parameters.
Is direct
MELSOFT connection
disabled in "Built-in Ethernet port"
of "PLC parameter"?
YES
(To the next page)
12 - 49
Off
YES
Are cables connected properly? *
Check cables and wiring and
connect them properly. *
NO
communication with GX Developer
(When off)
Off or on (red)
(When on (red))
On or flashing
"LAN CTRL. DOWN"?
NO
Section 12.2.14
Flowchart for when the "ERR." LED is on/flickering
NO
Deselect "Disable direct
connection to MELSOFT".
NO
communication with GX Developer
*2: Check the following:
Is an IP address set?
Is the Ethernet port enabled?
Is the Ethernet port device operating normally?
Is the firewall setting disabled?
If enabled, are communications with MELSOFT products excluded in the setting?
Isn't communication with the Built-in Ethernet QCPU disabled by security software?
Are multiple Ethernet ports enabled at the same time?
2
NO
2
Is Ethernet
available?
Section 12.2.6
When the "POWER" LED turns off
Section 12.2.8
When the "POWER" LED turns on (red)
Hardware fault
Please consult your local nearest
YES
Mitsubishi or representative,
explaining a detailed description
of the problem.
Is Ethernet
YES
available?
YES
Completed