Siemens SIMATIC NET SCALANCE M874 Operating Instructions Manual page 33

LED
P1/P2
DI
DO
SCALANCE M874, M876
Operating Instructions, 02/2023, C79000-G8976-C331-12
Status Meaning
OFF No VPN connection is established.
ON All configured VPN connections are established.
Flashing Only some of the configured VPN connections are established.
OFF Ethernet connection to local computer or LAN not established.
ON Ethernet connection to local computer or LAN established.
ON Device receiving/sending data.
OFF Digital input inactive.
ON Digital input active.
OFF Digital output inactive.
ON Digital output active.
Description of the device
3.6 LED display
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