How sounds get a pulse in a specified

Hello.

We do a LabVIEW program to connect with pipelines via DDE and have established communications.

We cannot find a solution to the problem is the following:

We want to start the pump (TRUE) and stop (FALSE) in LabVIEW. Pipes can only receive a time message, otherwise we get errors. How can you send a '1' - only once when we press a button I have LabVIEW and send "0" once when we press the button again.

We thought of a solution where we calculate sounds and this fact alone sends the message once - but we can't find a way to program it.

Does anyone have an idea on how to fix this? We need a pulse in a single sample when you press power. The rest of the time, we should not send anything.

Thanks for your help!

The structure of the event runs only once by clicking on the button.  Put your transmission in this case. It will be NOT very send a start or stop only when the user toggels a button.  I guess you put your shipment in a loop, then within a structure of business therefore sent on each itteration.

He will send only once and not again until the button on the front is togled again.  an even more elegant method is to put your io a second loop and queue of orders from the structure of the event.

Tags: NI Software

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