How to configure timed loop?

[Johan.svensson]

Hi,

I have built a VI to log mechanical tensile tests. At first I used while loops to make the reading and appended all values to an array that is written to a text file when user push STOP.

I realised that the array becomes very large very fast so I got the idea to use a timed loop that appends every value during operation, it will not fill up the memory as in the case above.

But I don't really understand how the timed loop works, so please take a look at the VI and tell me how to config it.

[TiTou]

Hello,

I don't think a timed loop is required for your application, a while loop would do the job.
A timed loop, as I understand it, is a while loop with "built in" check on the iteration rate (it tells you if it finishes late) and also you can set a priority for this loop (I admit I don't really know what this means and how priorities are managed ). To sum up, I would use only if I need to :
    - give priority to a certain task,
    - know if the task finishes latter than expected.

Of course, appending a line to your measurement file at each iteration is a lot better than filling and array and writting it at the end !! But this as nothing to see with the type of loop you use.

Hope this makes things clearer for you

[Johan.svensson]

Ooops!

Of course I don't need a timed loop... So now I have replaced it with a while loop.

And it works fine!

[TiTou]

If things are clearer for you now, we've reached the goal 😉