How can we make communication with RS-232 port's data on visual basic?

[Bhadresh]

Hello

I am going to test my serial device with programmed in visual basic software.

I am learnig it, so please help me to do programing.

[nyc_(is_out_of_here)]

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@Bhadresh wrote:

Hello

I am going to test my serial device with programmed in visual basic software.

I am learnig it, so please help me to do programing.

---

Visual Basic 6 or Visual Basic.NET

makes a difference

either way, Google is your friend

[Curt_C]

Hi,

I think your best bet is to use use a serial session in NI-Visa and .NET. I've used Microsoft's Serial class before with instrumentation and have had some problems.

Imports NationalInstruments.VisaNS 'set a reference to visa first


Public Class Form1

    Dim meter As VisaNS.SerialSession

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click


        Try


            meter = New SerialSession("ASRL1::INSTR") 'comport 1
            meter.BaudRate = 9600
            meter.DataBits = 8
            meter.StopBits = StopBitType.Two
            meter.Parity = Parity.None
            meter.FlowControl = FlowControlTypes.DtrDsr
            meter.Timeout = 5000


            meter.Write("CONF:VOLT:DC")
            meter.Write("VOLT:DC:RANG:AUTO ON")

            meter.Write(":READ?")

            TextBox1.Text = meter.ReadString()


        Catch ex As Exception

        End Try

    End Sub

End Class

Curt

[Dennis_Knutson]

Keep in mind that there are fees for NI-VISA if you are not using any NI hardware or software.