12
TROUBLESHOOTING
12.2 Troubleshooting
12.2.27 When Ethernet communication with the target device is not available
12 - 39
9
EMC AND LOW
VOLTAGE
DIRECTIVES
10
LOADING AND
INSTALLATION
11
MAINTENANCE AND
INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
* 3: Confirm the following:
• Correct IP address?
• Normal subnet mask pattern?
• Normal default router IP address?
• Protocol in the open setting, protocol desired for the function, and whether the settings are
completed for the number of modules used for the function?
(From previous page)
How is the "ERR."
LED of the CPU module?
Is the Ethernet
port setting in "PLC parameter" for
QnUDE(H)CPU correct? *
3
Is forced deactivation
set in "Status of each connection"
of "Ethernet diagnosis"?
Any error in
"Status of each connection" or
"Error log" of "Ethernet
diagnosis"?
On or flashing
Off
"LAN CTRL. DOWN"?
Flowchart for when the "ERR." LED is on/flickering
YES
YES
NO
NO
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO
Enter correct parameters.
Is Ethernet
communication available with
the target device?
Is Ethernet
communication available with
the target device?
Is Ethernet
communication available with
the target device?
Disable the forced
deactivation.
Take actions according to
the error code.
(To next page)
Completed
Change to USB connection to read
CPU setting parameters.
Hardware fault
Please consult your local nearest
Mitsubishi or representative,
explaining a detailed description
of the problem.
Section 12.2.9