K8055 Digital Inputs

Kits PC Related Projects
1

I just built the K8055 and it passes all the software control tests in the instruction manual. Shouldn’t the digital inputs have some control over the output state? When I put a high or a low at one of the digital inputs, I see no change in digital output status.

Am I doing something wrong?

2

Do you see any change if you press the digital input test buttons?

3

I see the check mark on the computer screen toggle as I push the digital input test button and the counter adds one to its count each time I press the button but no change in output.

4

The digital inputs seem to work OK.

[quote]Shouldn’t the digital inputs have some control over the output state?[/quote]The inputs have no direct control over the outputs. The outputs are controlled by the software only.

For instance in the Visual Basic 2008 Express example project you may add the following lines to the timer procedure to echo the input state to the output:

Dim i As Integer i = ReadAllDigital WriteAllDigital(i)

Here a link to download the Visual Basic 2008 Express example project: box.net/shared/euf9bd2rc4

5

If the digital inputs have no control over the outputs, what purpose do the digital inputs do?

6

I hope I understand right your question.

  • The digital inputs are very useful to have. They can be used to check the status of different devices like switches or relays connected to these inputs.
    Your software reads the state of the digital inputs and makes the decision what to do. The software may put on or off the digital outputs in this case if you like.
7

If you have no experience with any programming language, you may check this thread “Program the K8055 with your mouse”: viewtopic.php?f=3&t=3440

[quote]In the software you can select English as language now. The last setting will be remembered.

Screenshots http://www.edutechsoft.nl/proscher.html
Download http://www.edutechsoft.nl/progeasy.html#download (10 may 2010 minor update 3 picture files added)
Manual PDF http://www.edutechsoft.nl/Elektro/EasyProgIntFace/EasyProgIntFace%20Manual.pdf[/quote]