sub VI, time measurement

[elementary]

Hi,

I have 2 basic, begineer questions:

1- Is there a special timer for measuring the time of my application / a loop execution? Or i need to program it?

2- How can I create a second of indicators or controls in a VI to avoid extra wiring? I want its value to follow the value of the first control.

Thank you

Message Edited by VI logger error on 03-05-2008 04:48 AM

[Caroline Edenholm]

Hi,

If you would like to measure the time your VI has executed you could for exemple use the tool "Profile Performance and memory". You find it under Tools>>Profile>>Performnce and memory

If you would like to measure the time of a loop iteration for exemple, you can use the structure Timed Loop and use the output "Iteration duration" from the output node. See tha attached VI.

If you would like to use a while or for loop and measure the iteration time you could program it by using a shift register and for exemple Get Date/Time in Seconds.vi, take a look at the attached exemple Elapsed time.vi.

I'm not exactly sure what you mean by a second of indicators and controls but maybe it's a local variable you mean? Right click on the control and choose Create>> Local variable.

I hope this helps!

[JB]

A common way to measure the duration of a piece of code or sub-VI is shown in attached VI.

[Dennis_Knutson]

Never, ever, create a local variable just to avoid wiring. That is just bad programming. Take a little time and make your wires neat, use subVIs, etc.