Reading a counter input channel – Measurement Computing DAQFlex User Guide User Manual

Page 18

DAQFlex Software User's Guide

Using DAQFlex Software

Reading a counter input channel

// Read counter channel 0
String[] Devices;
DaqDevice MyDevice;
DaqResponse Response;

try
{

// Get a list of message-based DAQ devices
Devices = DaqDeviceManager.GetDeviceNames(DeviceNameFormat.NameAndSerno);

// Get a DaqDevice object for device 0
MyDevice = DaqDeviceManager.CreateDevice(Devices(0));

// Start the counter
MyDevice.SendMessage("CTR{0}:VALUE=0");
MyDevice.SendMessage("CTR{0}:START");

// Read and display the daq response
for(int i = 1;i<=10;i++)
{

System.Threading.Thread.Sleep(750);
Response = MyDevice.SendMessage("?CTR{0}:VALUE");
label1.Text = Response.ToString();
Application.DoEvents();

}

// Stop the counter
MyDevice.SendMessage("CTR{0}:STOP");

}
catch (Exception ex)
{

// handle error
label1.Text = ex.Message;

}

' Read counter channel 0
Dim MyDevice As DaqDevice
Dim Response As DaqResponse
Dim Devices As String ()

Try

' Get a list of message-based DAQ devices
Devices = DaqDeviceManager.GetDeviceNames(DeviceNameFormat.NameAndSerno)

' Get a DaqDevice object for device 0
MyDevice = DaqDeviceManager.CreateDevice(Devices(0))

Dim I As Integer

' Start the counter
MyDevice.SendMessage("CTR{0}:VALUE=0")
MyDevice.SendMessage("CTR{0}:START")

' Read and display the daq response
For I = 1 To 10

System.Threading.Thread.Sleep(750)
Response = MyDevice.SendMessage("?CTR{0}:VALUE")
Label1.Text = Response.ToString()
Application.DoEvents()