Download Q Corresponding Ethernet Interface Module User's Manual(Basic)

5 COMMUNICATION PROCEDURE
Display contents of
loop back test results
Status of the target
Ethernet module
MELSEC-Q
Cause
IP address for the target Ethernet module is
incorrect. (Class or sub-net address differs from the
Ethernet module setting.)
The same IP address has been set to multiple target
Ethernet modules.
Error exists
No error
"Error code"
Error exists
Check the parameter setting values for the
operation setting.
The same network number or station number has
been set to multiple target Ethernet modules.
Perform a PING test for the "No response"
module.
If the test has been completed normally,
check the parameter setting value for the
network parameters setting the number of
MNET/10H Ethernet cards.
The Ethernet line is in the high load status (including
a case in which an error equivalent to the error code
C030H, C031H is occurring).
Perform another test when the load on the
Ethernet line is low.
Routing parameter is not set. (An error equivalent to
the error code C080H is occurring.)
Check the setting value for the routing
parameter. (See Chapter 3 of User's Manual
(Application )
The remote password status of GX Developer UDP
for the target Ethernet module is in the lock status.
Cancel the remote password setting and write
the parameter to the PLC CPU.
The target Ethernet module is a function version A
module.
Check the model and function version for the
subject module.
The Ethernet line is in the high load status (including
a case in which an error equivalent to the error code
C030H, C031H is occurring)
Perform another test when the load on the
Ethernet line is low.
No error
"No response"
Corrective action
POINT
5 - 33
(1)
The loop back test can only be performed for the Ethernet module of function
version B and later.
Test results cannot be checked for the following modules. ("No response" will
be displayed. However, nothing is shown under the use of GX Developer
version 6.03D or former products.)
Also, they will not be counted in the total number of stations.
• Ethernet module of function version A, QnA/A series Ethernet module
(This is because there is no function to respond to this request.)
• Ethernet module that has not completed the initial processing
(This is because the initial processing has not been completed.)
If the Ethernet module of function version A or QnA/A series Ethernet
module that does not have a function to respond to the loop back test
receives a loop back test request, the following error codes will be stored
in the error log area of the buffer memory.
• Error code 4080H in the case of an Ethernet module of function version
A or QnA series Ethernet module of function version B
• Error code 50H in the case of a QnA series Ethernet module of function
version A or A series Ethernet module.
(2)
After checking the contents of the error and taking corrective actions for an
Ethernet module in which the loop back test has been completed abnormally,
reboot the station on which the Ethernet module is mounted.
With rebooting, the initial processing for the Ethernet module will be
performed.
Check the completion of the initial processing for the Ethernet module using
the PING test.
The PING test can also be performed on the "Loop back test" screen.
(3)
If an error code is displayed due to abnormal completion of the loop back test,
check the contents of the error corresponding to the error code, then take
corrective actions by referring to Section 11.3.3.
5 - 33