10 Facts About RS-485

RS-485, known as TIA-485 or EIA-485, is a standard defining the electrical characteristics of drivers and receivers for use in serial communications systems.

The equipment located along a set of RS-485 wires are interchangeably called nodes, stations or devices.

RS-485 only specifies the electrical characteristics of the generator and the receiver: the physical layer.

Since RS-485 is a multi-point specification this is not necessary or desirable in many cases.

RS-485 signals are used in a wide range of computer and automation systems.

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RS-485 is used for low-speed data communications in commercial aircraft cabins' vehicle bus.

RS-485 is used as the physical layer underlying many standard and proprietary automation protocols used to implement industrial control systems, including the most common versions of Modbus and Profibus.

RS-485 serves as a physical layer for the AES3 digital audio interconnect.

RS-485 is used in building automation as the simple bus wiring and long cable length is ideal for joining remote devices.

The external interface to the DCC command station is often RS-485 used by hand-held controllers or for controlling the layout in a networked PC environment.