Yaskawa SmartTrac Ethernet Card - Manual (Page 12)

SMART TRAC Ethernet Card
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Contents Technical Manual Smart Trac Ethernet Card
Ethernet Hub or Crossover Cable?
An Ethernet hub is required if connecting more than two devices (more than one
Smart Trac AC1 and one computer). If only connecting a single Smart Trac with
a single computer, you need only a special "crossover" or "uplink" Ethernet
cable.
You may construct a crossover cable using UTP Category 5 cable, two twisted
pair connectors (WE8W 8 pin modular) and the pinouts indicated in Figure 3.
The Tx and Rx pairs are swapped (orange and green wires, 1, 2 and 3, 6). You
can locate Pin 1 of a twisted pair connector (WE8W 8-pin modular) by holding
the connector with the keytab down and the contacts up. Looking from the back
of the connector where the wire will be inserted, pin 1 is on the left.
Pin 1 Wht/Org T2
2 Org/Wht R2
3 Wht/Grn T3
4 Blu/Wht R1
5 Wht/Blu T1
6 Grn/Wht R3
7 Wht/Brn T4
8 Brn/Wht R4
Pin 1 Wht/Green T3
2 Grn/Wht R3
3 Wht/Org T2
4 Blu/Wht R1
5 Wht/Blu T1
6 Org/Wht R2
7 Wht/Brn T4
8 Brn/Wht R4
Figure 3. Ethernet crossover cable pinout.