virtual digital input problem

[kenypatel]

Hello,

I am trying to learn DAQ on labview. So, I made a basic digital input vi, with a virtual digital input device. For some reason I cannot get it to output anything other then zero, but when I run the daq assistant (when setting up daq assistant) the boolean values toggle between 0 and 1. But, in my VI I cannot get any input other then zero.

I have attached my VI.

Thank you

[crossrulz · Accepted solution]

You should wire up your stop button to the Stop input on the DAQ Assistant.  You are openening and closing the task each time when you do not do that.  I think that is also resetting the toggling of the simulated device.

[kenypatel]

That did the trick. 

So, if I didn't wire the stop button to the stop daq assistant terminal, the daq assistant is basically triggering on and off?

Thank you 

[crossrulz]

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kenypatel wrote:

So, if I didn't wire the stop button to the stop daq assistant terminal, the daq assistant is basically triggering on and off?

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Not quite.  The task was being created and destroyed with each iteration of the loop.  By telling the DAQ Assistant that you are not stopping, it leaves the task open.