There must be a better way of doing this

[ChrissyC]

I want to read digital signals from my DAQ and display whether each channel is on/off on the front panel

[ChrissyC]

Aeastat,

Again thanks for all the help, i really appreciate you taking the time to go through all of these steps with me. When they are there in the program i don't have any probs with understanding whats going on - it's just getting them into the program i have trouble with! , but these step by step ........steps are really helping me to see how to go about modifying and writing programs etc.

again thanks,

Chris

[aeastet]

No problem that is what I want. I want you to see how it can be done and be able to understand so you can do it the next time. Also when you have gotten to be a pro at it you come back and pass it on to someone else. That is what this fourm is all about.

[aeastet]

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@CClear87 wrote:

I want to read digital signals from my DAQ and display whether each channel is on/off on the front panel

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You will need digital output to read this. So you will have to edit the daqmx create virtual channel vi so it is a digital output.

Do you know the difference for an input and output? If you want the device to tell you a state then it would be an output. If you are trying to set the channel state then it would be an input.

[aeastet]

Is there a reason that you are using MS word for your reports? I think it would be easier to send everythin to a text file such as .txt or .csv We could do this very easily with the write to spread sheet file.

[ChrissyC]

Ahh i didn't realise that about input/output ( a bit confusing - i thought input collected data and output sent signals out).

There is a requirement to use Word, as i am trying to put as much automation into the system as possible. And having someone process the data after it has been collected is a step backwards.

Good news though, there is now only one test_number AI, a global one for the whole test cycle. The programming of the tester has been altered so that it queues the packs, before moving on.

I've had a go at trying to make the digital inputs (or outputs whatever they are) work with the test_number analog channel, in order to display pass/fails on the word report. (See the VI below) My idea is to get the while loop surrounding the digital read to iterate every time the value of the test_number input changes by 100mV. Therefore the digital channel is only read when the test changes.

Then i tried to use a case structure to record on which test the digital channel registered a fail, but i'm not sure if a loop is needed here or how to append the values to an array.

Chris

[aeastet]

I would use events to tell the digital loop to take data. We would also need to change the digital loop to read only when it gets this signal. I will look at your code and see what I can do to help here.

[aeastet]

Do you have the digital setup file. I can take a look at that and see what you have going on there.

[ChrissyC]

here you go

Thanks

[aeastet]

Do you need to see all of the digital channels to know if there was a failure or do you just need to know if one failed?