Chapter 2. InstallationGFK-2816F August 2015 21Ethernet MediaThe RXi Controller can operate directly on 10Base-T, 100Base-TX or 1000Base-T media viaits network port. All three arrangements can use up to 100m of twisted pair cable betweeneach node and a switch, hub, or repeater.Note: For all three types, shielded twisted pair (STP) cable is required to maintainCE compliance.10Base-T Two pairs of wire are used, one for transmission, and the other for receive.100Base-TX Two pairs of wire are used, one for transmission, and the other for receive.1000Base-T Four pairs of wire are used for simultaneous transmission and receive inboth directions.Note: Pin assignments are provided for diagnostic purposes only. Ethernet cablesare available from commercial distributors. We recommend purchasing ratherthan making cables.10Base-T/100Base-Tx Port Pin AssignmentsPin Number Signal Description1 TD+ Transmit Data +2 TD- Transmit Data -3 RD+ Receive Data +4 NC No connection5 NC No connection6 RD- Receive Data -7 NC No connection8 NC No connection1000Base-T Port Pin AssignmentsPin Number Signal Description1 BI_DA+ Bi-directional pair A+ (Transmit)2 BI_DA- Bi-directional pair A- (Transmit)3 BI_DB+ Bi-directional pair B+ (Receive)4 BI_DC+ Bi-directional pair C+5 BI_DC- Bi-directional pair C-6 BI_DB- Bi-directional pair B- (Receive)7 BI_DD+ Bi-directional pair D+8 BI_DD- Bi-directional pair D-The operation of the Ethernet port LED indicators, ACTIVITY and LINK, is described inSection 1.3.3 PROFINET and GbE Port LEDs.