As you can see from this example, the loop period may be less than 20ms in the first iteration, but subsequent iterations will be the desired time. In the example below, the CODE will execute in 5 ms, and the loop will not iterate until a multiple of 20 ms is reached on the system clock. This wait function will ensure that the loop completes when the ms time is a multiple of its input value. The Wait Until Next ms Multiple operates in a similar fashion but there are important differences. Since the code in the loop takes less time to complete than the input to the Wait (ms) function, the Wait function will cause the loop to delay 5 additional milliseconds for a total delay of 10 ms. Notice that there is no data dependency between this block of code and the Wait (ms) function which means that the Wait (ms) node will begin executing at the same time as the rest of the code in the loop. There is also a Wait (ms) function that is set to introduce a delay of 10 ms. In this figure notice that there is a segment of code that takes on the order of 5 ms to execute. The diagram below shows how the Wait (ms) operates to control the elapsed time of each loop iteration. The execution time is computed by taking the difference in these two values of the millisecond timer and then dividing by 1000 to convert to seconds.Ĭomparing Wait (ms) and Wait Until Next ms Multiple In the figure below the initial time is measured in the first frame of the sequence structure, the code of interest is put in the second frame, and the final time is measured in the last frame. Examples Benchmarking CodeĪ common use of the Tick Count (ms) function is for benchmarking the execution speed of a block of code. The internal timer’s counter can be reset to zero, via the “reset” Boolean input. This OpenG VI will periodically output a Boolean TRUE on a specified time interval. What are Quick Drop Control-Key Shortcuts?.What is Quick Drop and how to I use it?.How to use LabVIEW on WKU campus computers?.Can I open a file from the SVN Repo Browser?.

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