tdms

[Leon27]

Hi, I am adquiring data from a proccess in real time, I want to create TDMS files every five minuts, my problem is how rename the file every iteration and if it is possible to do with a while loop.

[Lennard.C]

Hi Leon27,

Do you have the VI code? What is the name of the files you want to recreate?

Presuming that you want to programmatically create a new file for every 15 mins, it is possible. You'll need to use a combination of shift registers (to hold previous values), while loop, case structure (if else conditions) and a timer to trigger the condition. 

You can find the example here: https://decibel.ni.com/content/docs/DOC-22640

Warmest regards,

Lennard.C

[Leon27]

Hi, Lennard.

I am sending you an image from my VI´s code. Yesterday I could achieve to create a file every 5000 samples, but the file is overwriting every iteration, I will review the information you sent me.

Thanks.

[christian_w]

You should use the GetDateTime VI in conjunction with FormatDateTimeString to build unique file names

the format string %Y%m%d%H%M%S gives a one second resolution which should be good enough

don't forget the open/close file handling

[crossrulz]

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Leon27 wrote: but the file is overwriting every iteration

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That is because you never change the file name.  As was stated earlier, using the Date/Time to build an unique file name is a good route to go.  The other option is to put the loop index number in the file name.

[Leon27]

Hi, Lennard.

With base on your code I could resolve my problem.

thanks.

[Leon27]

Crossrulz and  Christian_w,

thanks for your opinion, now I am trying to prove your comments.