Checking The Status And Result Of Module Communication Test; Error Number When The Test Abnormally Ended - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

■Checking the status and result of module communication test.

The test status and result can be checked with the dot matrix LED of the module.
Test status LED display
Test in progress The dot matrix LED displays "UCT".
Normal completion The dot matrix LED displays "OK".
Abnormal end The ERR LED turns on and the dot matrix LED indicates "ERR" and error number alternately at intervals of 1 second.

■Error number when the test abnormally ended.

The dot matrix LED indicates the error number with the form of "Target Ethernet port Error number".
For example, "1 3" is displayed when error No.3 occurs in P1.
If the module communication test fails, take the following actions.
Error Description
number
1 Internal self-loopback test
failure
2 External self-loopback test
connection error
3 External self-loopback test
communication error
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
fails again, Please consult your local Mitsubishi representative.
Replace the Ethernet cable and perform the test again. If the test fails again, Please consult your local
Mitsubishi representative.
3 TROUBLESHOOTING
3.2 Checking the Module Status
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