Controlling daq

[chrisharris]

Hi

We have four voltage signals coming from a DAQ and then being split using signal manipulation. We would like it so one of the tests entering the daq can trigger all the other tests to begin. That is on test is always on and the other three don't begin until a set result is generated from the first test. Is this possible?

Thanks

Chris

[xdaf]

This post is a bit confused. Are the signals coming from the DAQ, or going to the DAQ? What do you mean by "tests": maybe software routines activating DAQ lines? Do you want one of this routines to trigger activation of the others when it finishes?

[chrisharris]

the signals are coming from the daq, I want one of the tests from the daq to trigger the start of the other tests from the daq.

thanks

chris

[NIquist]

If you mean can you control the starting of one test based on the results coming back in from some other already running test the answer is: Of course you can.  Automating this type of thing is one of the main purposes of LabVIEW.

[xdaf]

Still unclear: by "test", do you mean a test program, or a part of it? In this case test is not "from DAQ", but using DAQ as external hardware. Is it your situation?

In this case, NIquist's advice applies!

Regards

[chrisharris]

in response to NIquist yes this is what i want to do, but i am having trouble doing it, is there a simple way to achieve this only using one daq assistant in a while loop.

[NIquist]

Nope.  You'll need a more advanced architecture if you want to monitor input, make decisions based on it, and then trigger the appropriate code to run.  A state machine is probably the best way to go.  You'll have an idle state spinning in a loop to monitor input and then it sends the machine to different states depending on what input it receives.