Siemens SIMATIC NET SCALANCE XC-400 Operating Instructions Manual page 37

100 Mbps, 10 Mbps), is still displayed. If there is a connection problem and autonegotiation
is active, the port LED goes off.
Meaning in display mode C
In display mode C, the port LEDs indicate the mode.
LED color
-
Green
Meaning in display mode D
In display mode D, the port LEDs indicate whether the port is monitored.
LED color
-
Green
Yellow
SCALANCE XC-400
Operating Instructions, 08/2023, C79000-G8976-C694-01
LED status
Off
On
LED status
Off
On
On
Meaning
Port operating in half duplex mode
Port operating in full duplex mode
Meaning
Port is not monitored.
Port is monitored for "Link up".
Error handling is triggered when the port changes to the
active status.
If a link has been established at the port, but it should not
be available, the signaling contact indicates an error.
Port is monitored for "Link down".
Error handling is triggered when the port changes to the
inactive status.
If no valid link has been established at the port (e.g. the
communication partner is switched off or the cable is not
connected), the signaling contact indicates an error.
Description of the device
4.7 LED display
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