Connecting
7.6 Use of Ethernet interfaces
NCU 7x0.3 PN
Manual, 09/2011, 6FC5397-1EP40-0BA0
53
Table 7- 10 Ethernet interfaces X120, X130, X127 in the 1 Gbit mode
Pin Signal name Signal type Meaning
1 DA+ B Bidirectional pair A+
2 DA- B Bidirectional pair A-
3 DB+ B Bidirectional pair B+
4 DB- B Bidirectional pair B-
5 DC+ B Bidirectional pair C+
6 DC- B Bidirectional pair C-
7 DD+ B Bidirectional pair C+
8 DD- B Bidirectional pair C-
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 Ethernet port LED displays
LED Status Meaning
On Link exists Green
Off Missing or faulty link
On Receive or transmit activity Orange
Off No activity
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