536 Rockwell Automation Publication 1783-UM007G-EN-P - February 2017
Appendix D Cables and Connectors
When connecting the ports to 10BASE-T- and 100BASE-TX-compatible
devices, such as switches or repeaters, you can use a two or four twisted-pair,
crossover cable.
Use a straight-through cable to connect two ports only when one port is
designated with an X. Use a crossover cable to connect two ports when both
ports are designated with an X or when both ports do not have an X.
You can use Category 3, 4, or 5 cabling when connecting to 10BASE-T-
compatible devices. You must use Category 5 cabling when connecting to
100BASE-TX-compatible devices
.
Figure 92 and Figure 93 show the cable schematics.
Figure 92 - Two Twisted-pair Crossover Cable Schematics
Figure 93 - Four Twisted-pair Crossover Cable Schematics
IMPORTANT Use a four twisted-pair, Category 5 cable when connecting to a 1000BASE-T-
compatible device or PoE port.
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Switch
3 TD+
6 TD–
1 RD+
2 RD–
1 TPO+
2 TPO-
3 TP1+
6 TP1-
1 TP0+
Switch Switch
2 TP0-
3 TP1+
6 TP1-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
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