multiple timer+saving to file

[johndoe3344]

Hi guys,

I'm new to here and LabVIEW, and I'm trying to design a program with multiple timers. The user clicks the first button to start the timer, and upon clicking the second button, it stops the first timer, logs it, and starts a second timer. And so on with the third and fourth buttons.

I have a VI designed, but it doesn't really work, and I'm not sure why. Could anyone suggest possible fixes? Thanks a lot.

[Harold_Timmis]

well, you only need one while loop and on event structure for your program

[johndoe3344]

I'm not sure what you mean. How would it work with only one event structure? Could you be a little more specific? Thanks.

[Harold_Timmis]

the reason you are having errors is:

your events are not filled you have to chooses acontrol to go with a event such as:

        ok button, value change

[Harold_Timmis]

this is an error:

[JÞB]

of coarse, you could just use the elapsed time vi from the timing palatte, use property nodes to enable and disable the buttons, and avoid having all those pesky event structures run in series (by diabling the buttons until the prerquiste event occurs you can combine the structures into one.)  makes for cleaner code-but comments should be used to clarify the vi function.  Better yet- use the vi discription!

[johndoe3344]

Thanks for the tip.

I filled in the empty event structures, but I think there's something wrong with the design of the program in general.

I'm getting 0.00 0.00 0.00 on the log, instead of actual times.

Is there something wrong with my timer design?

[johndoe3344]

In case anyone wants to try running it, I have the "fixed" version attached.

[JÞB]

Yep-

time isn't an integer its a number of mSec.

[JÞB]

Woah!

OK- its not good to have the same event handled by two different loops and I cannot understand why you would change the timeout value when "Button" goes true.  Back to the drawing board for this.