Configuration / project engineering
6.5 LED display
SCALANCE X-400
Operating Instructions, 06/2015, C79000-G8976-C186-12
127
6.5.5
LED display of the ports (DMode A through DMode D)
LEDs of the ports
The two LEDs of slot 5 or the four LEDs of slots 9 through 11 of the basic device indicate
various port statuses depending on the set display modes. The displays have the same
significance for all ports on all slots of the basic device and the extender modules EM495-8
and EM496-4.
Port statuses in DMode A
In display mode A, the current port status is displayed.
Port
Color Status
Meaning
P1
P2
P3
P4
off
No valid link to the port (for exam-
ple station turned off or cable not
connected)
Green on
Link exists and port in normal sta-
tus. In this status, the port can re-
ceive and send data.
flashes once per period
Link exists and port in "blocking"
status. In this status, the port only
receives management data (no
user data).
flashes three times per
period
Link exists and port turned off by
management. In this status, no data
is sent or received over the port.
flashes four times per period Port exists and is in the "monitored
port" status. In this status, the data
traffic of another port is copied to
this port.
Yellow flashes / lit
Link exists, port is in normal status
and data is being received at the
port.
Figure 6-9
Display of the port status of port 1
