Connection Status Of Ethernet Interfaces - Siemens SIMATIC PN/M-Bus LINK Operating Instructions Manual

Diagnostics
10.1 Status LEDs
10.1.3

Connection status of Ethernet interfaces

The LEDs for indicating the connection status of the Ethernet interfaces are located under a
housing flap.
Figure 10-3
44
Status LEDs, Ethernet interfaces
LINK Indicates whether there is a physical connection on the Ethernet level.
Connection exists
On
No connection exists
Off
Rx/Tx Indicates whether a packet is being sent or received
PN/M-Bus LINK sends or receives a packet
On
No packet is sent or received
Off
Operating Instructions, 03/2018, A5E44260928-AA
PN/M-Bus LINK