RS485.com

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The RS485 Communications Authority

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At this site you will find products and information on RS485, RS422, RS232, Ethernet, USB, and Fiber Optic Serial Communication Products. At R.E.Smith we carry a full line of serial converters, repeaters, multiplexers and line drivers, as well as micro-controlled I/O boards that can be networked over RS485 to distribute and capture data. Because our products are the result of meeting the needs of our customers, we are continually adding to and improving our product line. If you have a special application, we may already have a solution for you.  3.0KV Galvanic Isolation and -40C to 85C operating temperature range, is available on 90% of our product line.

We incorporate many features into our product line that are not available on competitor's products.

      We design and produce our entire product line.  Fully automatic data direction control from DC to 115.2Kbps standard (faster available), at any communications specification, with very fast transition into receive mode after a character has been transmitted to avoid data collisions.  Very fast turn-on automatic transmit enable control (on the fly), to eliminate leading edge degradation for reliable cascading of multiple units.   Bit-by-bit timing eliminates character oriented time delays without jumper settings ("self-tuning" to any data/baud rate and/or any number of bits/character with all formats supported, including data highway plus, DH+, DH, etc.).  Your operating system, or other devices on your RS485/RS422 network, might limit the communications speed; however, our converters and repeaters won't.  Many of our products incorporate; superior multi-stage transient protection (without limiting speed or loading), LED indicators, bias/termination/test jumpers, dual isolation (for inline repeaters) to insure correct installation/superior performance, and removable screw terminal strips. 

      Our "Industrial Strength" products operate from 9-35VDC, with 3KV Galvanic Isolation.  At this time about 90% of our entire product line has an extended operating temperature range of -40C to 85C.  We have units that will extend the distance of RS485/RS422 communications, with and without repeaters/extenders, products to implement very large RS485/RS422 networks.  We are working on units (converters, repeaters and I/O products) with power and data over standard CAT-5 cables, for multi-drop and/or event-driven networks.  Our new QUSB422, USB 2.0<=>Quad serial ports (16C550 compatible UARTS with 512-Byte FIFOs, 50 to 921.6Kbps) combines the ease of USB with the distance of RS485/RS422, and the functionality of event-driven hardware and software.

      Our products are at the South Pole, at the bottom of the sea, at the edge of space, and everywhere in between.  If you think you have found a better converter, repeater, or multi-repeater (home-run data distributor) please let us know.  It won't be the best for long.  Technical assistance and system design help available (no charge).   See USB & New Photos below for information/photos for many of our newer products.

Call 513-874-4796 for additional information.  Many of our newer products are not on our website at this time.

Ask us about RS485TURBO(extended speed and distance) 


Check our USB & New Photos, Product CD Folders, or New Products links below for the Latest Product Information
3.0KV Opto/Xformer Isolated Converters and Repeaters Available Now!

Updated February 10, 2008 (Preferred Resolution 1024 X 768)

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"Let me spin a very large
RS485 network for you!"
 
   

 The RS485 Communications Authority 

Please call us at: 513-874-4796

Our 24-hour fax number is: 513-874-1236

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 RS485/RS422/RS232 Networks as God Intended Them to Be 


        Mandy
         Donna Schaller-Smith, October 26, 1947 to February 4, 2006          Mandy,  January 14, 1983 to May 13, 1997