A.1 Pin-Wiring For TP-Cabel and RJ-45

An overview of the wiring variants can be found here:

http://www.1wire.org/media/A_Guide_to_the_1WRJ45_Standard_Draft.zip

Who does not want to struggle through all the variants may use the following universal and sustainable scheme for the RJ45 pin assignment.

Color Specification acc. to:
Pin	EIA/TIA 568A		EIA/TIA 568B
1	Green/White	Main Supply GND	Orange/White
2	Green	Main Supply +5V/50mA for 1–Wire Components	Orange
3	Orange/White	Secondary 1–Wire Bus GND	Green/White
4	Blue	Primary 1–Wire Bus	Blue
5	Blue/White	Primary 1–Wire Bus GND	Blue/White
6	Orange	Secondary 1–Wire Bus	Green
7	Brown/White	Auxiliary Supply i.e. +12V/200mA for other consumers	Brown/White
8	Brown	Auxiliary Supply GND	Brown

Note: For long busses the ohmic resistance has a negative effect on the supply voltages. Use an application-side power supply to prevent that.

<<3315>>