Configuration / project engineering
6.5 LED display
SCALANCE X-400
Operating Instructions, 06/2015, C79000-G8976-C186-12
129
Figure 6-11 Mode display (full, half duplex) of port 1
Note
If there is a link fault and the type of transmission is fixed (autonegotiation off), in D
Mode C,
the desired status, in other words the set type of transmission (full or half duplex) continues
to be displayed. If there is a link fault and autonegotiation is active, the port LED goes off.
In display mode D, you can see whether or not the port is monitored.
P1
P2
P3
P4
off The port is not monitored; in other words, if a link is not established at
the port, this does not trigger the signaling contact.
Green on Port is monitored; in other words, if there is no link established at the
port (for example cable not plugged in or connected device turned off),
this triggers the signaling contact and the fault state is adopted.
Figure 6-12 Example: Monitoring of port 1 is "on“
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