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Using the while iteration block

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Joseph
Joseph on 30 Mar 2012
Closed: MATLAB Answer Bot on 20 Aug 2021
Hi all,I have a tank system and would like to use the while iteration block so it runs and writes to file(using the to file block) say every second as i want to read and display this data in Labview every second.Can you assist me with this?It doesnt seem to write continuously to the file block

Answers (1)

Kaustubha Govind
Kaustubha Govind on 30 Mar 2012
I explained a little bit here about why I think you cannot expect the "To File" block to write to a file immediately:
"I think the reason that To Workspace blocks don't write the variable immediately it because it is very inefficient for To Workspace/File blocks to write the workspace/disk at every time-step, because these are slow processes than will slow down simulation. My guess is that they maintain a buffer that they write to at every time-step - the data is probably written to the final destination only when the buffer is full."
I think the LabVIEW-Simulink interface is a better option for your application.
  2 Comments
Joseph
Joseph on 30 Mar 2012
Thanks,tried using the 'Interpreted matlab fcn' but its still not working
Kaustubha Govind
Kaustubha Govind on 2 Apr 2012
Do you mean what you are using File I/O operations in an Interpreted MATLAB Fcn block? Do you open and close the file at every time step?

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