That depends on the structure of your code. If you have a dedicated loop for communication, then you can simply place a wait of less than one second inside the loop. If you're using an event structure, you could use the timeout case (but note that the timeout event will not fire if other events are fired) or you could use dynamic events. Basically, we will need to see your code to give a real answer.
To learn more about LabVIEW, I suggest you try searching this site and google for LabVIEW tutorials. Here, here, here, here and here are a few you can start with and here are some tutorial videos. You can also contact your local NI office and join one of their courses.
In addition, I suggest you read the LabVIEW style guide and the LabVIEW user manual (Help>>Search the LabVIEW Bookshelf).
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