3 TROUBLESHOOTING
3.3 Checking the Network Status
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■Action for abnormal end
If the communication status test fails, "No Response" or an error code is displayed in the "IP Address / Error Code" field in
"Result".
■Precautions
• The communication status test cannot be executed when "MELSOFT Transmission Port (UDP/IP)" for the target Ethernet-
equipped module is locked with the remote password.
• When executing the communication status test, set "Gateway Other Than Default Gateway" under "Gateway Parameter
Settings" in "Application Settings" to "Not Use".
Displayed test
result
Status of the
external device
Cause Action
No Response No error The initial process for the Ethernet-equipped module
has not been completed normally.
Correct the module parameters.
There is an error in the line connection to the
Ethernet-equipped module. (Cable disconnection,
line disconnection, or others)
• Check the cable.
• Check the hub and gateway.
The IP address of the Ethernet-equipped module is
incorrect. (The class or subnet address differs from
that of the Ethernet-equipped module.)
Correct the module parameters.
The same IP address has been set to multiple
Ethernet-equipped modules.
The same network number or station number has
been set to multiple Ethernet-equipped modules.
No error/Error exists The Ethernet line is heavily loaded. Perform the test again when the Ethernet line is not
heavily loaded.
Error exists The routing settings are not configured. Correct the set value for "Routing Setting" of "CPU
Parameter".
Error code No error The "MELSOFT Transmission Port (UDP/IP)" for the
Ethernet-equipped module is locked with the remote
password.
Disable the remote password setting and write the
parameters to the CPU module.
The target module does not support the
communication status test.
Check the module name and function version.
No error/Error exists The Ethernet line is heavily loaded. Perform the test again when the Ethernet line is not
heavily loaded.
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