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Description of the device
4.3 LED display
Meaning in display mode D
In display mode D, the "L1" and "L2" LEDs indicate whether the power supply is monitored.
Table 4- 3
LED color
-
Green
Table 4- 4
LED color
-
Green
4.3.6
Port P1, P2, ... LEDs for the port status
The port LEDs "P1", "P2" etc. show information about the corresponding ports.
The meaning of the Port LEDs depends on the set display mode, see section ""DM1" and
"DM2" LEDs for the display mode (Page 30)".
Meaning in display mode A
In display mode A, the port LEDs indicate whether a valid link exists.
LED color
-
Green
32
Monitoring for devices with 24 VDC
L1/L2 LED
L1/L2 connector
LED status
Off
Power supply is not monitored.
If the power supply falls below 17 VDC, the signaling contact does
not respond.
On
Power supply is monitored.
If the power supply falls below 17 VDC, the signaling contact
responds.
Monitoring for devices with 100 to 240 VAC
L1/L2 LED
L1/L2 connector
LED status
Off
Power supply is not monitored.
If the power supply falls below 90 VAC, the signaling contact does
not respond.
On
Power supply is monitored.
If the power supply falls below 90 VAC, the signaling contact re-
sponds.
LED status
Meaning
Off
No valid link to the port (for example station turned off or cable
not connected).
On
Link exists and port in normal status. In this status, the port can
receive and send data.
Flashes once per
Link exists and port in "blocking" status. In this status, the port
period*
only receives management data (no user data).
Flashes three
Link exists and port turned off by management. In this status, no
times per period*
data is sent or received via the port.
Flashes four times
Link exists and port is in the "monitor port" status. In this status,
per period*
the data traffic of another port is mirrored to this port.
Operating Instructions, 09/2018, A5E03275845-12
SCALANCE XR-500
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