how to stop while loop from looping

[stu22]

Hi, need a little help in the respect to while loops. Basically i have a while loop within an while loop within another while. So what i want to do is run the program within the outer while loop. The problem is that when i start the program it runs once, which is ok, but its the runs again and again and again. I need it to only run once untill i press the inner while loop bolean to set it going and to stop and to restart, but i can not manage to keep the inner loop from initerating. I just wonder if its a problem with the field point? because i know it works, but using a different example. Any help greatly appreciated.

Thanks Stuart

[Al_S]

Use case structures around your middle and inner loops tied to the booleans you want to control the loops. Inside each loop, use a local variable of the boolean tied to the continue terminal of the loop.

You need to use local variables because an input to a loop (wired from outside the loop) is read only on the first loop iteration. Any subsequent change to a control terminal outside of the loop is not seen by the loop.

To create a local variable, on the diagram, right click on the terminal of interest, then select Create >> Local Variable. Then right click on the local variable and select Change to Read.

P.S. You know your stop button is wired to an empty case and doesn't do anything.

[stu22]

Hi, thanks i understand it a lot better now. yeah! the empty case use to have a txt file save in it. but i just wanted to test it first before adding save as file and save as txt system. I presume if i put some kind of file saving system within this part of the program. i should also contain this within the case structures, so i can call saving when ever i want for recording data.

Thanks Stuart