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MELSEC-Q
4 SETUP AND PROCEDURES BEFORE STARTING THE OPERATION
(3) Starting a test/checking the result
The hardware test is executed when the CPU module is powered on from off or
reset.
Check the status by the indicator LED of the network module.
The T. PASS LED flashes during the test.
When the T. PASS LED flashes 20 times (approx. 10 seconds) or more and if
the ERR.LED does not flash, this condition indicates normal completion.
If the test is abnormally completed, the ERR. LED flashes.
Upon detection of an error, the test will be terminated (abnormal termination).
Before test During test Normal completion of test
T.PASS : Off
: Flashing
: Flashing 20 times (approx. 10 seconds) or
more
Abnormal completion of test
ERR. : Flashing
When an error occurs, the error details must be checked with GX Developer. The
faulty area can be examined by replacing the cable or module.
REMARKS
Testing status and the result can be checked in the following link special registers.
Baton pass status (host)
SW0047 1F
H
: Offline test
Cause of baton pass interruption
SW0048 2
H
: Offline test
Offline test execution item/faulty
station (requesting side)
SW00AC 9
H
: Hardware test
Offline test result (requesting side)
SW00AD 0 : Normal
1 or larger : Error code
For details of how to check the error contents, refer to Chapter 8.
RUN MNG
T.PASS D.LINK
SD RD
ERR. L ERR.
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