Siemens SIMATIC NET SCALANCE SC-600 - Port Leds

Description of the device
4.5 LED display
SCALANCE SC-600
32 Operating Instructions, 10/2021, C79000-G8976-C453-04
Meaning in display modes A, B and C
In display modes A, B and C, from the "L1" and "L2" LEDs you can see whether the
power supply is higher or lower than 9.3 V.
L1/L2 LED
L1/L2 connector
LED color
LED status
-
Off
Power supply lower than 9.3 V
Green
On
Power supply higher than 9.3 V
Meaning in display mode D
In display mode D, the "L1" and "L2" LEDs indicate whether the power supply is
monitored.
L1/L2 LED
L1/L2 connector
LED color
LED status
-
Off
Power supply is not monitored.
If the power supply falls below 9.3 V, the signaling contact does
not respond.
Green
On
Power supply is monitored.
If the power supply falls below 9.3 V, the signaling contact
responds.
4.5.5 Port LEDs
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 "LEDs
"DM1" and "DM2" (Page 31)".
Meaning in display mode A
In display mode A, the port LEDs indicate whether a valid link exists.
LED color
LED status
Meaning
-
Off
No valid link to the port (for example communications
partner turned off or cable not connected).
Green
On
Link exists and port in normal status. In this status, the
port can receive and send data.
Flashes once per period*
Function is not currently used.
Flashes three times per
period*
Link exists and port turned off by management. In this
status, no data is sent or received via the port.
Flashes four times per
period*
Function is not currently used.
Yellow
Flashing / lit
Receiving data at port
* 1 period ≙ 2.5 seconds