Measurement-computing DAQFlex User Guide Manuel d'utilisateur télécharger pdf (Page 22)

DAQFlex Software User's Guide Using DAQFlex Software

Try

Dim ScanData As Double(,)

Dim Names As String()

Dim Device As DaqDevice

Names = DaqDeviceManager.GetDeviceNames(DeviceNameFormat.NameAndSerno)

Device = DaqDeviceManager.CreateDevice(Names(0))

Device.EnableCallback(AddressOf OnReadScanData, CallbackType.OnDataAvailable,

1000)

Device.EnableCallback(AddressOf OnReadScanData, CallbackType.OnScanComplete,

Nothing)

Device.SendMessage("AISCAN:LOWCHAN=0")

Device.SendMessage("AISCAN:HIGHCHAN=0")

Device.SendMessage("AISCAN:RATE=1000")

Device.SendMessage("AISCAN:SAMPLES=5000")

Device.SendMessage("AISCAN:START")

Catch ex As Exception

Console.WriteLine(ex.Message)

End Try

Protected Sub ReadScanData(ByVal errorCode As ErrorCodes, ByVal callbackType As

CallbackType, _ ByVal callbackData As Object)

Try

Dim AvailableSamples As Integer

Dim ScanData As Double(,)

AvailableSamples = DirectCast(callbackData, Integer)

ScanData = Device.ReadScanData(AvailableSamples, 0)

Catch ex As Exception

Console.WriteLine(ex.Message)

End Try

Writing hardware-paced I/O

The basic approach to programming analog output scans is to set the device's output scan properties,

call the WriteScanData() method, and send the START command. The following examples show how to

program a basic output scan.

try

{

double[,] scanData = new double[1, 5000];

string[] names = DaqDeviceManager.GetDeviceNames(DeviceNameFormat.NameAndSerno);

DaqDevice device = DaqDeviceManager.CreateDevice(names[0]);

// fill scanData with data

device.SendMessage("AOSCAN:LOWCHAN=0");

device.SendMessage("AOSCAN:HIGHCHAN=0");

device.SendMessage("AOSCAN:RATE=1000");

device.SendMessage("AOSCAN:SAMPLES=5000");

device.SendMessage("AOSCAN:BUFSIZE=5000");

int timeOut = 0;

device.WriteScanData(scanData, 5000, timeOut);

device.SendMessage("AOSCAN:START");

}

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 124 125

Commentaires sur ces manuels

Pas de commentaire

Measurement-computing DAQFlex User Guide Manuel d'utilisateur Page 22

Commentaires sur ces manuels

Produits connexes et manuels pour Logiciel Measurement-computing DAQFlex User Guide