What is RS 485 communication

Discussion in 'Computing and Networks' started by MGP, Feb 21, 2008.

  1. MGP

    Thread Starter New Member

    Feb 21, 2008
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    Hi everybody,

    can anyone clarify me what ia RS 485 Communication & how messages can be communicated with microcontrollers by this communication?

    Thanks
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,148
    1,791
    RS-485 is actually a physical layer specification which allows multiple nodes to be connected to a differential 2-wire bus. Unlike RS-232 which can be full duplex (transmit and receive at the same time), RS-485 exchanges must be half duplex. This means there must be rules about who can talk and when. The most straight forward way to start experimenting with this is to connect a UART to a transceiver (LTC1485 and others) and have a go at it. Of course you'll need another node to communicate with, but that is a minor inconvenience.
     
  3. MGP

    Thread Starter New Member

    Feb 21, 2008
    6
    0
    Thanks for your information
     
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