Mitsubishi MELSEC-Q Series User Manual page 258

13 TROUBLESHOOTING
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(3) Line test
Checks the operating status of the connected remote stations, local stations,
intelligent device stations and standby master station.
Stations that are operating normally are displayed in "blue", and faulty stations
are displayed in "red".
(a) Operating procedure
Click "Diagnostics" and select "Loop test" under "CC-Link diagnostics".
1) When checking the communication status of all stations
Select "All Stations" 1 : station No., and click "Test execute".
Since the test is performed on all 64 stations, the stations that are not
connected will be displayed as faulty stations.
2) When checking the communication status of specific modules
Select "Selected station" in 1 : station No., specify the station number,
and click "Test execute".
POINT
When conducting a loop test, do not perform write to buffer memory addresses
5E0 , 608 .
H H
MELSEC-Q
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