3: Installation and HardwareXPress DR+ User Guide 21Table 3-4. Ethernet Interface SignalsPin Direction Name FunctionTX+ Out 1 Transmit Data +TX- Out 2 Transmit Data -RX+ In 3 Differential Ethernet Receive Data +RX- In 6 Differential Ethernet Receive Data -The next drawing shows a typical RJ45 connector. The color is not standard but verytypical of an Ethernet patch cable. Pin 1 is located at the top of the connector (orange +white). The view is from the end of the connector.Table 3-5.Typical RJ45 ConnectorMulti-Drop Ethernet ConnectionsAlthough there are two Ethernet ports, the XPress DR+ only has one MAC address andIP address. Either port can be used as the primary connection with the other usedto inter-connect other Ethernet devices or cascade from one XPress DR+ to another.Figure 3-7. Multi-Drop Ethernet Connections
