Mitsubishi Electric MELSEC Q Series Reference Manual page 151

4 SETTING AND PROCEDURE BEFORE OPERATION
Switch position
Display section
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(3) Checking the test result
The T.PASS LED of the network module flashes at approximately 0.5 s intervals.
When the T.PASS LED flashes 20 times (approx. 10s) or more and if the
ERR.LED does not flash, this condition indicates normal completion.
When the test has failed, the ERR. LED flashes.
Check the test result with the LEDs of the testing station.
[Normal test result]
[Abnormal test result]
Before test
(during RESET)
RUN MNG
T.PASS D.LINK
SD RD
ERR. L ERR.
Upon detection of an error, the test will be terminated (abnormal termination).
<Possible causes of errors>
A loopback was executed because of a wiring error, a faulty optical fiber cable or
abnormality was detected in other station.
1) If wiring is incorrect
Check the connections of IN and OUT connectors and other connectors.
If an incorrect connection is found, connect properly.
2) If an optical fiber cable is faulty or another station is abnormal
Replace the defective cable or module.
REMARKS
The status during the test and the test result can be checked using link special
registers or GX Developer.
Baton pass status (host)
Cause of baton pass interruption
Offline test execution item/
faulty station (requesting side)
Offline test result (requesting
side)
For details on how to check the error contents, refer to Chapter 8.
If two or more modules are installed, the testing status and the result of each module
can be checked by adding 200
During test
(during STOP)
RUN MNG
T.PASS D.LINK
SD RD
ERR. L ERR.
Or L. ERR.
SW0047
SW0048
SW00AC
or
SW00AD
1 or larger : Error code
to the corresponding device number.
H
MELSEC-Q
Test complete
Flashing of the ERR.
LED of the executing
station indicates an error.
1F : Offline test
H
2 : Offline test
H
03 : Loop test
H
04
H
0 : Normal
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