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modbus

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Modbus library with TCP Master & Slave implementation.

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modbus test f6_test.exs
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test/f6_test.exs 

defmodule F6Test do

  use ExUnit.Case

  alias Modbus.Request

  alias Modbus.Response

  alias Modbus.Model



  test "Write 0x6162 to Single Analog Output" do

    state0 = %{ 0x50=>%{ {:ao, 0x5152}=>0 } }

    state1 = %{ 0x50=>%{ {:ao, 0x5152}=>0x6162 } }

    val0 = 0x6162

    cmd0 = {:wao, 0x50, 0x5152, val0}

    req0 = <<0x50, 6, 0x51, 0x52, 0x61, 0x62>>

    res0 = <<0x50, 6, 0x51, 0x52, 0x61, 0x62>>

    ^req0 = Request.pack(cmd0)

    {^cmd0, <<>>} = Request.parse(req0)

    {^state1, nil} = Model.apply(state0, cmd0)

    ^res0 = Response.pack(cmd0, nil)

    {nil, <<>>} = Response.parse(cmd0, res0)

  end



end