Measurement-computing DAQFlex User Guide Manuale Utente Scaricare il pdf (Pagina 10)

DAQFlex Software User's Guide Using DAQFlex Software

Dim deviceNumber As Integer

Dim device As DaqDevice

Dim deviceName As String

deviceNumber = 0

deviceName = deviceNames(deviceNumber)

device = DaqDeviceManager.CreateDevice(deviceName)

4. Once you have a DaqDevice object, use the SendMessage() method to program your DAQFlex-

supported device.

DaqResponse response;

response = device.SendMessage("AI{0}:RANGE=BIP10V"); // set the input range for channel 0

response = device.SendMessage("?AI{0}:VALUE"); // read a single value from channel 0

Dim response As DaqResponse

response = device.SendMessage("AI{0}:RANGE=BIP10V") ' set the input range for channel 0

response = device.SendMessage("?AI{0}:VALUE") ' read a single value from channel 0

 The DaqResponse object contains a method for getting the response as a string and a method for

getting the response as a numeric.

To get the response as a string, use the ToString() method:

string value = response.ToString();

Dim value As String

value = response.ToString()

To get the response as a numeric, use the ToValue() method:

double value = response.ToValue();

Dim value As Double

value = response.ToValue()

If the response does not contain a numeric value, ToValue() returns Double.NaN.

When you no longer need the DaqDevice object, you can release it by calling the ReleaseDevice()

method:

DaqDeviceManager.ReleaseDevice(device);

DaqDeviceManager.ReleaseDevice(device)

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Measurement-computing DAQFlex User Guide Manuale Utente Pagina 10