Chapter 3. Installation and Start-up: Rack-based and RX7i Embedded Interface28 PACSystems* RX7i & RX3i TCP/IP Ethernet Communications User Manual GFK-2224Q10Base-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.Connection Using a Hub/Switch/RepeaterConnection of the Ethernet Interface to a 10Base-T or 100Base-Tx network is shown below.10BaseT/100Base TxTwisted Pair CableHub/Switch/RepeaterTo Other NetworkDevicesEthernetInterface10/10010/100Figure 11: Connection Using Hub/Switch/RepeaterNote: Care must be taken with the use of active network control devices, such as managedswitches. If a device inserts excessive latency, especially in regards to the ARP protocol,produced EGD exchanges may generate PLC Fault Table entries indicating the loss of aconsumer when the PLC transitions from STOP to RUN. EGD data will be successfullytransferred after an initial delay.
