E
RS-485 Network
EIA RS-485 is industry’s most widely used bidirectional, balanced
transmission line standard. It is specifically developed for industrial multi-
drop systems that should be able to transmit and receive data at high rates
or over long distances.
The specifications of the EIA RS-485 protocol are as follows:
-Max line length per segment: 1200 meters (4000 feet)
-Throughput of 10 Mbaud and beyond
-Differential transmission (balanced lines) with high resistance against
noise
-Maximum 32 nodes per segment
-Bi-directional master-slave communication over a single set of twisted
pair cables
-Parallel connected nodes, true multi-drop