React on Array's last Element arrival

[ACiDuser]

Hello NI developers!

My VI reads data from board and fills array. As data acquisition speed is slower than VI performance I want VI react and perform action exactly when array gets it's last element. I don't want to use Stacked Sequence Structure, because there NEXT frame executes only when it gets all the data from previous frame and if I manipulate large amounts of data (i.e. Megabytes) it will be hanging somewhere in memory. I want to catch that moment when array filled with last element. Any advices how can I reach that?
Thank you in advance.


Message Edited by ACiDuser on 06-26-2008 08:17 AM

[MikeS81]

Hi ACiDuser,

where comes your data from? How do you write it into your array? Do you use a loop? Can you explain a bit more, please?

Mike

[JB]

Are you expecting an exact number of elements or how do you know that the data acquisition has measured the last element ?

[ACiDuser]

Yes, I specify first of all - Kilobytes/Megabytes to be read by CIN. CIN uses FOR loop inside. And data passes to a 1-D array.

[ACiDuser]

This CIN executes with help of Event Structure, when I press button "READ"

[ACiDuser]

I want calculate transfer speed. CIN measures time that takes FOR Loop and sends it to LV. And I get this time with microsecond precision. I got an idea... Maybe I should use this Stacked Event Structure only for "Time" indicator.. and inside Check If it's not equal with 0 then - calculate speed!

[ACiDuser]

Found very simple solution... a While loop, which checks if Value is greater than 0. sorry for dummy question! 🙂