modbus on VB.net

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  • qfchen
    New Member
    • Oct 2006
    • 91
    #1

    modbus on VB.net

    Hi,

    I want ot develop an application to communicate using modbus on RS485. How should I start in VB.net or VB 2005.

    Thank.
    Tags: None
    • Plater
      Recognized Expert Expert
      • Apr 2007
      • 7872
      #2
      http://en.wikipedia.org/wiki/Modbus and http://en.wikipedia.org/wiki/Rs485
      And probably the SerialPort object, since rs485 is very similar to rs232

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        • qfchen
          New Member
          • Oct 2006
          • 91
          #3
          Hi Plater,

          Do you have info or sample code to implement modbus in VB.net or VB 2005? Thanks.

            Comment

            • smallzoo
              New Member
              • Jan 2012
              • 1
              #4
              VB.Net code

              I'm not sure where this should be posted but I have a board which is accessed via a AT683 ModBus / J-Bus Communications Card

              Connection to the main board is via RS232 ribbon cable connection and connection to ModBus / J-Bus is via RS485 using a 9-pin D-type connector

              I am finding it very difficult to find someone who could develop some simple VB.Net functions which will read and write to the board.

              Does anyone know of someone who could help. I am based in the UK but it can be anywhere

              Thanks

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