Siemens SINUMERIK ONE NCU 1750 - Page 71

Pin assignment
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 8-8 Assignment of the Ethernet interfaces X120, X130 and X127 in 10/100 Mbit/s mode
Connector Pin Name Type Remark
/('
/('

1 TxD+
O Transmit data
2 TxD-
3 RxD+ I Receive data
4/5 GND - (terminated internally with 75 Ω; not re‐
quired for data transmission)
6 RD- I Receive data
7/8 GND - (terminated internally with 75 Ω; not re‐
quired for data transmission)
Shield - - On connector housing
- LED green
(Link)
- Lit: 10 or 100 Mbit/s
O󹪜: No or faulty connection
- LED orange
(Activity)
- Flashes: Data exchange
O󹪜: No data exchange
Signal type: O = Output; I = Input
Table 8-9 Assignment of the Ethernet interfaces X120, X130 and X127 in 1 Gbit/s mode
Connector Pin Name Type Remark
/('
/('

1 DA+ B Bidirectional pair A+
2 DA- Bidirectional pair A-
3 DB+ Bidirectional pair B+
4 DC+ Bidirectional pair C+
5 DC- Bidirectional pair C-
6 DB- Bidirectional pair B-
7 DD+ Bidirectional pair D+
8 DD- Bidirectional pair D-
Shield - - On connector housing
- LED green
(Link)
- Lights up orange: 1000 Mbit/s
O󹪜: No or faulty connection
- LED orange
(Activity)
- Flashes: Data exchange
O󹪜: No data exchange
Signal type: B = Bidirectional
Note
Connection only on LAN, not on telecommunication networks!
Connecting
8.7 Use of Ethernet interfaces
NCU 1750
Equipment Manual, 01/2022, A5E45627807B AE 71