Siemens S7-300 - Connector for Industrial Ethernet

Connector pinout
A.3 Connector for Industrial Ethernet
Configuring and commissioning S7 CPs for Industrial Ethernet
224 Configuration Manual, 09/2013, C79000-G8976-C182-13
Gigabit interface
Pin no.
Designation / signal
Function
1
2
P0-P TD+ / RD+
P0-N TD- / RD-
Transmit + / Receive +
Transmit - / Receive -
3
4
P1-P TD+ / RD+
P2-P TD+ / RD+
Transmit + / Receive +
Transmit + / Receive +
5
6
P2-N TD- / RD-
P1-N TD- / RD-
Transmit - / Receive -
Transmit - / Receive -
7
8
P3-P TD+ / RD+
P3-N TD- / RD-
Transmit + / Receive +
Transmit - / Receive -
All four pairs of wires (P0, P1, P2, P3) can be operated with duplex.
A.3
Connector for Industrial Ethernet
Connector pinout - 15-pin D-sub female connector
Pin no.
Signal name
Function
1
MEXT
External chassis ground, shield
2
CLSN
Collision +
3
TRMT / TPETXD
Transmit + / TPE Transmit Data +
4
Ground
5 V ground
5
RCV / TPERXD
Receive + / TPE Receive Data +
6
M 15 V
15 V ground
7
TPE_SEL
Switchover AUI/ITP
8
Ground
5 V ground
9 CLSN_N Collision -
10
TRMT_N / TPEXTXD_N
Transmit - / TPE Transmit Data -
11 Ground 5 V ground
12
RCV_N / TPERXD_N
Receive - / TPE Receive Data -
13
P15 V
+15 V
14
Ground
5 V ground
15
-
-
The pin assignment corresponds to the IEEE 802.3 AUI interface.
The signals TPETXD / TPETXD_N and TPERXD / TPERXD_N form the ITP interface.