Rockwell Automation 1783-Mxxx Stratix 8000 and 8300 Ethernet Managed Switches User Manual - Manual (Page 191)

Rockwell Automation Publication 1783-UM003I-EN-P - March 2014 191
Cables and Connectors Appendix D
Figure 19 - Four Twisted-pair Straight-through Cable Schematic
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.
The following figures show these schematics:
• Two twisted-pair, crossover cable schematics
• Four twisted-pair, crossover cable schematics
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 20 - Two Twisted-pair Crossover Cable Schematic
IMPORTANT Use a four twisted-pair, Category 5 cable when connecting to a 1000BASE-T-
compatible device or PoE port.
1 TPO+
2 TPO-
3 TP1+
6 TP1- 1 TP1+
Switch Router or Personal Computer
2 TP1-
3 TPO+
6 TPO-
4 TP2+
5 TP2-
7 TP3+
8 TP3- 4 TP3+
5 TP3-
7 TP2+
8 TP2-
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Switch
3 TD+
6 TD–
1 RD+
2 RD–