Siemens SINUMERIK 840D sl Equipment Manual page 59

Pin
8
Signal type: B = bidirectional
Note
The Ethernet interfaces have what is called autocrossing functionality, i.e. when required, send
and receive lines are switched over.
LED displays
For diagnostic purposes, the RJ45 sockets are each equipped with a green and an orange LED.
This allows the following status information about the respective Ethernet port to be displayed:
Table 7-11
Name
Link
Activity
Position of the Ethernet interfaces
NCU 7x0.3B PN
Equipment Manual, 10/2020, 6FC5397-1EP40-6BA1
Signal name Signal type
DD- B
LED displays of the Ethernet ports
Color Status
Green Lights up green
Lights up orange
off
Orange lit
off
7.7 Use of Ethernet interfaces
Meaning
Bidirectional pair D-
Meaning
Transfer rate 10 or 100 Mbit/s
Transfer rate 1000 Mbit/s
No or faulty connection
Data exchange
No data exchange
Connecting
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