Description of the device
3.5 LED display
SCALANCE W774-1 /W734-1
22
Operating Instructions, 01/2017, C79000-G8976-C325-08
3.5
LED display
Information on operating status and data transfer
On the front of the housing, several LEDs provide information on the operating status of the
device:
LED
Color
Meaning
L1
Off
Power supply too low
Green
Power supply L1 is applied.
L2
Off
Power supply too low
Green
Power supply L2 is applied.
PoE
Green
Power supply using Power over Ethernet.
P1
Green
There is a connection via the first Ethernet interface (Link).
Green and yel-
low flashing
alternately
Data transfer via the first Ethernet interface.
P2
Green
There is a connection via the second Ethernet interface (Link).
Green and yel-
low flashing
alternately
Data transfer via the second Ethernet interface.