topic Re: Event case controlled by DAQ in LabVIEW

Event case controlled by DAQ

nick1607 — Mon, 03 Apr 2023 14:36:51 GMT

Hello everyone,
I would like to control an event case with a digital input from the DAQ, so that when the input is at 1 the event case is carried out.

Can anyone help me?

Thanks

Niccolò

Re: Event case controlled by DAQ

PazhanivelVenkatt — Mon, 03 Apr 2023 14:40:19 GMT

Try using User Events to trigger an event whenever you receive the DAQ Input as 1.

Re: Event case controlled by DAQ

nick1607 — Mon, 03 Apr 2023 14:48:32 GMT

thanks for the reply, hob just tried but it still doesn't work

Re: Event case controlled by DAQ

PazhanivelVenkatt — Mon, 03 Apr 2023 14:56:28 GMT

Please do share the one which you tried, so that we can suggest you to get your problems resoved

Re: Event case controlled by DAQ

santo_13 — Mon, 03 Apr 2023 18:52:44 GMT

What DAQ are you using and what is your goal?

Re: Event case controlled by DAQ

mcduff — Mon, 03 Apr 2023 19:50:07 GMT

If you have a board that supports it, then you can use the Change Detection Event.

The Example finder has "Voltage (with Events) - Continuous Input.vi" for voltage input. For digital events, the structure is similar. Something like below to start

then wire the dynamic event registration into the Event Terminal, then make the corresponding event case

Re: Event case controlled by DAQ

nick1607 — Tue, 04 Apr 2023 06:23:18 GMT

I tried to create a User Event and use it to activate the Event Case.

I'm at the beginning of Labview I don't know if it's right.

Re: Event case controlled by DAQ

nick1607 — Tue, 04 Apr 2023 06:25:55 GMT

I'm Using the DAQ NI 9375 and I would like to use my input as an event case activation

Re: Event case controlled by DAQ

GerdW — Tue, 04 Apr 2023 07:03:58 GMT

Hi nick,

@nick1607 wrote:

I tried to create a User Event and use it to activate the Event Case.

I'm at the beginning of Labview I don't know if it's right.

You did it wrong…

I recommend to learn from the example VIs coming with LabVIEW, found in the example finder!

You need to enable user events in your event structure and you need to register the user event for that event structure!

(Why do you need an event to put some data into a queue? Why not do this in your DAQ loop?)