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7.1.5 When the T.PASS LED is off or flashing
Check one of the following items that matches the current T.PASS LED status.
(1) When the T.PASS LED is off
Check that the mode setting switch is set to "8".
If not, set the switch to "8" and reset the MELSECNET/H remote I/O module.
(2) When the T.PASS LED is flashing
If an offline test is being performed, wait until the test ends. Set the mode setting switch to "8" and reset the
MELSECNET/H remote I/O module.
(3) When the status of T.PASS LED is unstable
The line status may be unstable. Check the following.
• The status of connectors and cables
• Whether the cables that meet the specifications are used
• Whether the overall cable distance and station-to-station distance are within the specifications range
( Page 23, Section 3.1)
7.1.6 When the D.LINK LED is off
Connect GX Developer to the MELSECNET/H remote I/O module and perform the following network diagnostics.
• Other station information ( Page 77, Section 7.2.2)
• Network monitor details ( Page 78, Section 7.2.3)