Chapter 2. Installation and Start-up: RX3i Embedded Interface18 PACSystems* RX7i & RX3i TCP/IP Ethernet Communications User Manual GFK-2224QNote: When a CPE330 is configured as a CPU320, Ethernet properties cannot be configured.However, the embedded Ethernet ports may be used with the default IP Addresses.Connection to a 10Base-T / 100Base Tx NetworkEither shielded or unshielded twisted pair cable may be attached to a port. The 10Base-T/100Base Tx twistedpair cable must meet the applicable IEEE 802 standards. Category 5 cable is required for 100BaseTX operation.The Ethernet port automatically senses the speed (10Mbps or 100Mbps), duplex mode (half-duplex or full-duplex) and cable configuration (straight-through or crossover) attached to it with no intervention required.10Base-T/100Base Tx Port PinoutsPin Number4 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 connectionNote: Pin assignments are provided for troubleshooting purposes only. 10Base-T/100Base-Txcables are readily available from commercial distributors. We recommend purchasingrather than making 10Base-T/100Base-Tx cables.The programmer is connected to the Ethernet Interface through a 10Base-T or 100Base-Tx network.10BaseT/100Base Tx Twisted Pair CableHub/Switch/RepeaterTo other network devicesEthernet Porton RX3i CPExxxProgrammerFigure 5: Ethernet Cable Routing4 Pin 1 is at the bottom right of the Station Manager port connector as viewed from the front of the module.