EIA-485 - Wikipedia, the free encyclopedia
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EIA-485 , also known as TIA/EIA-485 or RS-485, is a standard defining the electrical characteristics of drivers and receivers for use in balanced digital multipoint systems. The standard is publi...
en.wikipedia.org/wiki/EIA-485
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RS-485 BUS WIRING PRIMER Purpose: This document provides general and specific information for the use of RS-485 data to interconnect Spectracom Master clocks 5.3 Verifying RS-485 with a Spectracom TimeTap The Spectracom TimeTap (Model 8178T or 8179T) is a good troubleshooting device to determine if RS485 data is present.
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www.spectracomcorp.com/portals/0/support/pdf/RS-485_wir...
www.spectracomcorp.com/portals/0/support/pdf/RS-485_wiring_primer.pdf
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Resources and News for industrial automation ... I have been struggling with the 2- versus 3-wire, grounded versus ungrounded, shielded versus unshielded issue with RS485 wiring for 20 years. Steven says pretty much the same as I have been saying for over 15 of those 20 (I was a slow learner).
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www.chipkin.com/articles/rs485-cables-why-you-need-3-wi...
www.chipkin.com/articles/rs485-cables-why-you-need-3-wires-for-2-two-wire-rs485
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Two-wire 485 networks have the advantage of lower wiring costs and the ability for nodes to talk amongst themselves. On the downside, two-wire mode is limited to half-duplex and requires attention to turn-around delay. ... For more information on serial communications, including RS485 systems issues, we recommend Serial...
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www.bb-elec.com/tech_articles/rs485_basics.asp
www.bb-elec.com/tech_articles/rs485_basics.asp
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Serial Communication Home ... What is Serial Communication? ... RS-422/485 Wiring Topology...
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www.moxa.com/Zones/Serial_Communication/Serial_Communic...
www.moxa.com/Zones/Serial_Communication/Serial_Communication_Technology/RS-422-485_Wiring_Topology.htm
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RS485 - ; is a specialized interface that would not be considered standard equipment on today's home PC but is very common in the data acquisition world. ... Wiring distances should be limited to one or two hundred feet on async. data and about 50 feet with sync. data (that may be pushing things in some cases).
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www.arcelect.com/RS485_info_Tutorial.htm
www.arcelect.com/RS485_info_Tutorial.htm
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The Electronics Industry Association (EIA) has produced standards for RS485, RS422, RS232, and RS423 that deal with data communications. Suggestions are often made to deal with practical problems that might be encountered in a typical network.
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www.rs485.com/rs485spec.html
www.rs485.com/rs485spec.html
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Welcome to Control.com, the global online community of automation professionals. ... Is there anybody who has experience on wiring the Siemens RS485 to the Fargo Maestro? We would like to know the specific wire coding for RS485.
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www.control.com/thread/1026240868
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RS485 bus if required. Alternatively the RS485 bus can be terminated externally. Slave #2; This Flex should not terminate the RS485 bus. Drop length should be as short as possible. 2; 11; 4; 13; 2; 11; 4; 13; 2 11 4 13; ... Slave #1; This Flex can terminate the; RS485 bus if required. Alternatively the RS485 bus can...
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www.farsite.co.uk/custsupp/documents/RS485_Wiring_For_F...
www.farsite.co.uk/custsupp/documents/RS485_Wiring_For_Flex.pdf
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