Hardware Information7-6 SIMATIC Field PG P4 ManualA5E00180080-04EthernetPinout of the Ethernet interface:LED greenLED yellow1 8Fig. 7-1 Ethernet portPin-No. Designation Description Input / Output1 TD+ Transmitted data Output2 TD– Transmitted data Output3 RD+ Received data Input4, 5 * SYMR Internal 75 Ω output -6 Received data Input7, 8 * SYMT Internal 75 Ω output -S Shield -LED yellow Connection -LED green Activity -* is not necessary for data transfer