Mitsubishi MELSEC-Q Series User Manual page 168

7 PROCEDURE BEFORE STARTING THE DATA LINK
MELSEC-Q
From the previous page
The test result is displayed using the "LED"
indicator lamps of the master module.
[When test is complete]
The "L RUN" LED lights up.
The "MST" LED flashes.
The test results are stored in SW00B4 to B7
(line test 1 result). However, since line test 1
is performed for 64 stations, disregard the
bit (s) for any unconnected stations.
[When test is incomplete (all stations are
abnormal)]
The "MST" LED lights up and the "ERR."
LED flashes.
The test results are stored in SW00B8
(line test result).
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