Module Communication Test - Mitsubishi Electric MELSEC iQ-R Series User Manual

Module Communication Test

This function checks the module hardware when communication using the RJ71GN11-T2 is unstable.
The following table lists the tests performed.
Test item
Internal self-loopback test
External self-loopback test
Procedure
1.
Set the module operation mode to module communication test mode in the following item.
[Navigation window]  [Parameter]  [Module Information]  Target module  [Application Settings]  [Module
Operation Mode]
2.
Connect the P1 and P2 of the RJ71GN11-T2 with an Ethernet cable.
3.
Write the module parameters to the CPU module.
4.
Reset or power off and on the CPU module to start the module communication test.
Do not perform a module communication test while connected to another station. The operation of the other
station may fail.
Checking the status and result
The test status and result can be checked with the LED indications of the module.
Test status
Test in progress
Normal completion
Completed with an error
■Error number when the test completed with an error
The dot matrix LED indicates an error with the form of "P1 or P2_Error number".
For example, "1_3" is displayed when error No.3 occurs in P1.
If the module communication test is completed with an error, check the following.
Error Description
number
1 Internal selfloopback test error
2 External self-loopback test
connection error
3 External self-loopback test
communication error
4 TROUBLESHOOTING
168
4.2 Checking the Module Status
Description
Checks whether the communication function of the module can be performed normally.
Checks whether the communication can be performed normally with the Ethernet cable connected between
two connectors of the module.
LED indication
The dot matrix LED displays "UCT".
The dot matrix LED displays "OK".
The ERR LED turns on and the dot matrix LED indicates "ERR" and error number alternately at intervals of 1 second.
Action
Please consult your local Mitsubishi representative.
Check the Ethernet cable connection or replace the Ethernet cable, and perform the test again. If the
test results in an error again, please consult your local Mitsubishi representative.
Replace the Ethernet cable and perform the test again. If the test results in an error again, please
consult your local Mitsubishi representative.