ARCNET’s ALREADY FLEXIBLE PHYSICAL LAYER ENHANCED WITH SEVERAL EIA-485 VARIANTS
نویسنده
چکیده
ARCNET is regarded as one of the most flexible industrial networking technologies to wire due to the many cabling options available to the user. ARCNET can be configured as a star network using hubs or a bus without hubs. Cabling can be coaxial, twisted-pair or fiber optics. With the proper selection of hubs, repeaters and links, cabling and topology can be mixed to a distance of four miles. Now with new ARCNET controller chips, simplified interfacing to the popular EIA-485 multipoint networking standard is possible providing the user with more options. This paper describes the tradeoffs in implementing DC coupled, AC coupled and optically coupled EIA-485 ARCNET networks.
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