Translations:RS-485: Wiring and Connection/8/en

Материал из Wiren Board

Also, for bus laying, you can use a conventional twisted pair CAT5 for Ethernet - for it below is a standard wiring diagram (the usual wave resistance of such cable is 100 Ohms).

Use of category 5 network cable for RS-485 bus laying
Bus signal RS-485 Wire
Data A Pair 3 Wire 1 white-green
Data B Pair 3 Wire 2 green
power supply (12V or other) Pair 2 Wire 2 orange
power supply (12V or other) Pair 2 Wire 1 white-orange
not used Pair 1 Wire 2 blue
not used Pair 1 Wire 1 white-blue
ground power supply(GND) Pair 4 Wire 1 white-brown
ground power supply (GND) Pair 4 Wire 2 brown