Entry missing in the table

[shrekt]

Hi all,

      I am simply entering values in the table every 100ms.

For first 10 mins the entries comes at constant speed i.e 10 values per sec. but after that the values starts decreasing,

though slowly.every 10 mins the no of samples goes down by one.

I have attached a vi, In it a table is given which is not connected to anything, In that i have generated the output.

I think the loop execution time in increasing , can u help me in that?

My only aim is that, to get reading in the table every 100ms exact.

Regards,

Shrek

[GerdW]

Hi shrek,

2 points:

1) at the moment you don't get values exactly every 100ms as the attachment shows (simply changed format for timestring)

2) to maintain exact timing you shouldn't build big arrays as you do with your table! The bigger the table the more LabView has to copy from one memory block the the next...

Message Edited by GerdW on 08-24-2009 03:27 PM

[shrekt]

Hi GerdW,

 Thanks for the reply,

So how do you thinks i can proceed?

 Can you suggest some solution, as i have to take reading continously for 1-2 Hrs and store it in TXT file.

Regards,

Shrek

[GerdW]

Hi shrek,

simply store it in (txt-)files without collecting in a big table...

[shrekt]

Hi,

negative result.

I did it as follows but the output was same. (entries missing).

Regards 

Shrek

[Dennis_Knutson · Accepted solution]

What you are doing is just silly and I don't believe you have any 'missing' entries. Turn on context help and read how the Write to Spreadsheet File works. You are replacing the entire file with each iteration Do NOT use the build array and a shift register. DO wire a True to the append to file input. Do wire 1D array (NOT a 2D array) to the write function.

[shrekt]

Thanks Dennis,

It worked.

Regards....