2009

Eliminate Risk of Contention and Data Corruption in RS-485 Communications

Please Login at the top
of the page to download.

The RS-485 communications standard was introduced in 1983 by the Electronic Industries Alliance (EIA) as a two-wire, half-duplex, multi-drop alternative to the point-to-point RS-232 interface. (Note: RS-485 can also be wired using 4-wires to enable full-duplex communication). RS-485 uses differential signaling to allow up to 32 devices to communicate peer-to-peer at distances up to 4000 feet. In most RS-485 configurations two signals, a positive and a negative, are run as a twisted pair. Since these signals are compared to one another rather than a ground reference like RS-232, RS-485 communication is less susceptible to external noise injected on the wiring and performs more reliably in industrial environments.

 

White Papers

Introduction to Hypervisor Technology
Sponsored by Curtiss-Wright Controls Embedded Computing
Optimum Fastener Selection for Internal Pumping in Vacuum Systems
Sponsored by UC Components
Serial Fabrics Improve System Design
Sponsored by Pentek
X-Ray Imaging: Emerging Digital Technology - CMOS Detectors
Sponsored by Teledyne DALSA
Bearing selection for low-speed applications
Sponsored by Kaydon
Spherical Plain Bearing
Sponsored by AST Bearings

White Papers Sponsored By: