Phoenix Contact 1144175, User Manual, Page: 26 / 40

FL SWITCH EP74…
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PHOENIX CONTACT 4083_en_A
5.3 RJ45 Ethernet pinout
With 10/100/1000BASE-T(X) cables, pins 1 and 2 are used for transmitting data, and pins
3 and 6 for receiving data.
Table 5-3 RJ45 pinout for 10/100 Base-T(X)
RJ45 pin Assignment
1 TD+
2 TD-
3 RD+
4 Not used
5 Not used
6 RD-
7 Not used
8 Not used
Table 5-4 RJ45 pinout for 1000 Base-T(X)
RJ45 pin Assignment
1 BI_DA+
2 BI_DA-
3 BI_DB+
4 BI_DC+
5 BI_DC-
6 BI_DB-
7 BI_DD+
8 BI_DD-
The switch supports auto MDI/MDI-X operation. Use a cable to connect the switch to a PC.
The tables below show the 10Base-T/ 100Base-T(X) MDI and MDI-X and 1000 Base-T
MDI/MDI-X pin assignments. 10/100 Base-T(X) MDI/MDI-X pin assignments is as follows:
Table 5-5 10/100 Base-TX MDI port MDI-X port
RJ45 pin Assignment
1 TD+ (transmit) RD+ (receive)
2 TD- (transmit) RD- (receive)
3 RD+ (receive) TC+ (transmit
4 Not used
5 Not used
6 RD- (receive) TD- (transmit)
7 Not used
8 Not used