Siemens NCU 7x0.3 PN Series Manual page 53

Table 7- 10
Pin
1
2
3
4
5
6
7
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
LED
Green
Orange
NCU 7x0.3 PN
Manual, 09/2011, 6FC5397-1EP40-0BA0
Ethernet interfaces X120, X130, X127 in the 1 Gbit mode
Signal name Signal type
DA+ B
DA- B
DB+ B
DB- B
DC+ B
DC- B
DD+ B
DD- B
Ethernet port LED displays
Status
On
Off
On
Off
7.6 Use of Ethernet interfaces
Meaning
Bidirectional pair A+
Bidirectional pair A-
Bidirectional pair B+
Bidirectional pair B-
Bidirectional pair C+
Bidirectional pair C-
Bidirectional pair C+
Bidirectional pair C-
Meaning
Link exists
Missing or faulty link
Receive or transmit activity
No activity
Connecting
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