Loop is not working

[MDewey]

Just started to learn LABVIEW and face this kind of difficulties. The while loop is not working, but when the stop button is pressed the loop is happen only for a cycle. Looking for help/suggestion.

[Basjong53 · Accepted solution]

Move all indicators inside the loop. Think in dataflow. The data in the wires outside the loop only updates once the loop has finished.

[GerdW · Accepted solution]

• Hi Dewey,

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@MDewey wrote:

Just started to learn LABVIEW and face this kind of difficulties. The while loop is not working, but when the stop button is pressed the loop is happen only for a cycle. Looking for help/suggestion.

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The while loop iterates once per second

• when the Maintainance button is FALSE initially
• as long as the Stop button is FALSE

You can even see the iteration once you start debugging using the highlight execution tool: you really should use this to help you understand your own code! 🙂

[Yamaeda · Accepted solution]

I'd say the code works as expected, not just as you wanted it to. 🙂

As a tips you can r-click the needle meters and activate Visible Items -> Digital display so you don't need to update 2 controls for each value.

LV will read the Stop button long before it starts the wait, so it'll loop around one extra time and have on average a 1.5 sec stop time.

[MDewey]

Hi, thank you for your reply. Yes, since the numeric indicator did not showing any number, i thought the problem is on the loop. Thank you for letting me know.