User manual

1-Wire Application Guide v1.04 Page 7 of 41
Figure 1 1-Wire Bus Network
A bus network is the simplest kind of network. It consists of a length of cable with
sensors tapped into it along the way. Figure 1 shows an example.
An advantage of a bus network is its electrical simplicity and transmission
property performance. Bus networks generally exhibit very little electrical noise,
and thus the communications are more robust than star networks. Bus networks
are easy to electrically implement as well, however, it is not always convenient to
string a cable around to the locations of all sensors required on a bus. Also, bus
networks are like the old Christmas light strings – any break anywhere in the bus
will cause a fault downstream from the break. Any short on the bus will affect all
sensors on the bus.
2.2.2 Star Network