GE RX3i - Figure 11: Connection Using Hub;Switch;Repeater

Chapter 3. Installation and Start-up: Rack-based and RX7i Embedded Interface
28 PACSystems* RX7i & RX3i TCP/IP Ethernet Communications User Manual GFK-2224Q
10Base-T/100Base Tx Port Pinouts
Pin Number
4
Signal
Description
1
TD+
Transmit Data +
2
TD–
Transmit Data –
3
RD+
Receive Data +
4
NC
No connection
5
NC
No connection
6
RD–
Receive Data –
7
NC
No connection
8
NC
No connection
Note: Pin assignments are provided for troubleshooting purposes only. 10Base-T/100Base-Tx
cables are readily available from commercial distributors. We recommend purchasing
rather than making 10Base-T/100Base-Tx cables.
Connection Using a Hub/Switch/Repeater
Connection of the Ethernet Interface to a 10Base-T or 100Base-Tx network is shown below.
10BaseT/100Base Tx
Twisted Pair Cable
Hub/Switch/Repeater
To Other Network
Devices
Ethernet
Interface
10/100
10/100
Figure 11: Connection Using Hub/Switch/Repeater
Note: Care must be taken with the use of active network control devices, such as managed
switches. 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 a
consumer when the PLC transitions from STOP to RUN. EGD data will be successfully
transferred after an initial delay.