Dear everybody,
I have 2 problems, both concerning the VM140(K8061) interface-card:
The digital- and analog input are connected to pushbuttons leading to a 5 V supply. I had some problems, so I made a testprogram with C# to check whether the buttons work. But the ReadAllDigital doesn’t seem to work. I use Console.WriteLine to print out the value of the Digital input, but it doesn’t change if I press a button, it remains 255. I added my code below. What am I doing wrong?
The second problem is a bit strange. I use four K8061’s. While testing, I learned that one of the cards doesn’t work if more than 2 cards are connected. I use the jumpers to give the cards their adress, the C# program confirms that there are four cards connected with a MessageBox showing the cardadresses, but if I press one of the buttons linked to the input of that card, my test doesn’t response. But if I only connect that card, or that card and another one, it does response. What could be the problem?
Here is my code:
I use the FormLoad event to connect the cards like this:
private void Form1_Load(object sender, EventArgs e)
{
CA[0] = OpenDevice();
CA[1] = OpenDevice();
CA[2] = OpenDevice();
CA[3] = OpenDevice();
MessageBox.Show(CA[0].ToString() + " " + CA[1].ToString() + " " + CA[2].ToString() + " " + CA[3].ToString());
timer1.Enabled = true;
}
In the timer I read the digital and analog input:
private void timer1_Tick(object sender, EventArgs e)
{
if (Connected(CA[0]) && Connected(CA[1]) && Connected(CA[2]) && Connected(CA[3]))
{
for (int j = 0; j < CA.Length; j++)
{
int i = ReadAllDigital(CA[j]);
Console.WriteLine(i.ToString());
DigIn[0] = (i & 1) > 0;
DigIn[1] = (i & 2) > 0;
DigIn[2] = (i & 4) > 0;
DigIn[3] = (i & 8) > 0;
DigIn[4] = (i & 16) > 0;
DigIn[5] = (i & 32) > 0;
DigIn[6] = (i & 64) > 0;
DigIn[7] = (i & 128) > 0;
ReadAllAnalog(CA[j], AnaIn);
for (int k = 0; k < 8; k++)
{
if (DigIn[k] == false)
{
MessageBox.Show("DigIn Kaart: " + CA[j].ToString() + "; nummer: " + k.ToString());
}
}
for (int l = 0; l < 8; l++)
{
if (AnaIn[l] > 100)
{
MessageBox.Show("AnaIn Kaart: " + CA[j].ToString() + "; nummer: " + l.ToString());
}
}
}
}
else
{
MessageBox.Show("Card disconnected");
}
} Thanks in advance