Creating a .NET DAQ Component Programmatically

You can use a .NET DAQ component programmatically by directly creating an instance of the component and calling its methods and handling its events. The specific methods and events that you use differ depending on the type of task you configured. The following are task types and corresponding DAQ component members that are commonly used.

Finite Input

Finite input DAQ components derive from FiniteInputDaqComponent<TReader,TData>.

  1. Create an instance of a finite input component.
  2. Call Read to read the data. 
    VB.NET

Dim component As MyFiniteInputComponent = New MyFiniteInputComponent()
Dim data() As Double = component.Read()
			 			 
    C# 
				
MyFiniteInputComponent component = new MyFiniteInputComponent();
double [] data = component.Read();

Finite Output

Finite output DAQ components derive from FiniteOutputDaqComponent<TWriter,TData>.
  1. Create an instance of a finite output component.
  2. Call WriteAsync to write the data. 
VB.NET
Dim component As MyFiniteOutputComponent = New MyFiniteOutputComponent()
Dim data() As Double

'' Populate data …

component.WriteAsync(data)

C#
MyFiniteOutputComponent component = new MyFiniteOutputComponent();
double[] data;

// Populate data …

component.WriteAsync(data);

Continuous Input

Continuous input DAQ components derive from ContinuousInputDaqComponent<TReader,TData>.
  1. Create an instance of a continuous input component.
  2. Add an event handler for the DataReady event.
  3. Call StartRead to start the continuous input data acquisition. 
VB.NET
Dim component As MyContinuousInputComponent = New MyContinuousInputComponent()
AddHandler component.DataReady, AddressOf OnDataReady
component.StartRead()

' …

Sub OnDataReady(ByVal sender As Object, ByVal e As MyContinuousInputComponentDataReadyEventArgs)
Dim data() As Double = e.GetData()
' …
End Sub

C#
MyContinuousInputComponent component = new MyContinuousInputComponent();
component.DataReady += OnDataReady;

// … 

void OnDataReady(object sender, MyContinuousInputComponentDataReadyEventArgs e)
{
double[] data = e.GetData();
// …
}

Continuous Output

Continuous output DAQ components derive from ContinuousOutputDaqComponent<TWriter,TData>.
  1. Create an instance of a continuous output component.
  2. Add an event handler for the GenerateData event.
  3. Call StartWrite to start the continuous output data acquisition. 
VB.NET

 Dim component As MyContinuousOutputComponent = New MyContinuousOuptutComponent()
AddHandler component.GenerateData, AddressOf OnGenerateData
component.StartWrite()

' …

Sub OnGenerateData(ByVal sender As Object, ByVal e As MyContinuousOutputComponentGenerateDataEventArgs e)
Dim data() As Double

' Populate data …

e.SetData(data)
End Sub

C#

MyContinuousOutputComponent component = new MyContinuousOutputComponent();
component.GenerateData += OnGenerateData();
component.StartWrite();

// … 

void OnGenerateData(object sender, MyContinuousOutputComponentGenerateDataEventArgs e)
{
double[] data;

// Populate data …

e.SetData(data);
}

Regenerative Output

Regenerative output DAQ components derive from RegenerativeOutputDaqComponent<TWriter,TData>.
  1. Create an instance of a regenerative output component.
  2. Call StartWrite to start the continuous input data acquisition. 
VB.NET
Dim component As MyRegenerativeOutputComponent = New MyRegenerativeOutputComponent()
Dim data() As Double

'’ Populate data …

component.StartWrite(data)

C#
MyRegenerativeOutputComponent component = new MyRegenerativeOutputComponent();
double[] data;

// Populate data …

component.StartWrite(data);