Write to a file at different frequency?

[damos]

Hello:

I want to represent in a waveform chart two variables every 200 ms. That is what I'm doing in the attached vi. But I also want to write on a measurement file this two variables at a variable rate (user can change it). Where or how can I put my "Write to measurement file"?

Please, see the attached vi.

[GerdW]

Hi damos,

without being able to look at your VI I would suggest two ways:

- make a Case structure to call the Write-VI every n-th iteration

- put the Write-Vi in a parallel loop

[damos]

Thanks GerdW for your answer but I don't know how can I do it:

1) With Case structure, I don't know what to do with the output tunnel on the false case because out of the while loop I have a tdms file viewer.

2) With parallel loop, it doesn't transmit the data from one loop to another.

The original vi is this. Where or how can I put my "Write to measurement file" to write variables at different rate of main timed loop (200 ms) ?

I attached VI again for previous versions of labview. Thanks.

[GerdW · Accepted solution]

Hi damos,

"With Case structure, I don't know what to do with the output tunnel on the false case"

In that case, I would suggest going through examples provided with LabVIEW or to read the LabVIEWBasics-course on the NI website...

Admin note: Broken Image has been removed.

[damos]

Thanks a lot, GerdW. With your solution it works perferctly. I hadn't thought with shift registers.