Mitsubishi Electric Q80BD-J71BR11, User Manual

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MELSEC
6 PROCEDURE AND SETTINGS UP TO THE POINT OF OPERATION
(3) Checking the test results
Click the Board Set button in the "Board Information" screen in the MNETH
utility to run the forward loop/reverse loop test, and check the execution state by
the status of the LED's in the "Board Information" screen.
If T. PASS blinks 20 times and ERROR LED does not blink, the test is completed
normally.
Also, if the test ends abnormally, the ERROR LED or the L.ERR.LED will blink as
shown below to indicate the relevant error information.
1) The "TIME," "DATA" and "UNDER" LED's blink on the F.LOOP and
R.LOOP sides.
• The cable or the other station is abnormal and loop back occurred.
2) The "CRC", "OVER" and "AB.IF" LED's blink on the F.LOOP and R.LOOP
sides.
• The cable is defective.
3) The "TIME" and "DATA" LED's blink on the F.LOOP and R.LOOP sides.
• The wiring is wrong.
Check and correct the cable connections before and after the station
where the error occurred.
(4) Corrective action when the test completes abnormally
Check if the cable failure is not occurred, the connector is not disconnected, and
the wiring is appropriate. If there is any error, correct the connection.
When the cable has been disconnected, replace the cable.
For the error occurred in the other station, check the other station.