PicoLog example VI do not save data properly

Hey, I'm playing with the example provided by picolog VI 104. I'm trying to record data of temperature with the stamps. See the attached VI. For some reason, the saved CSV file this code produces only consists of two lines, the first
'Time, temperature' and the second '0, 17. How can I add datapoints to the file?
I want my CSV file to look like this:

Weather temperature
0                              23.647

0.1                           23.456

0.2                           24.186

...                             ...
Congratulations in advance.

The problem is your writing on a spreadsheet file is outside the loop and you're only writing your last value that is out of your time in a loop.

You must open the file and write the header before your loop.  Write each line of data inside the while loop.  Close the file after your while loop ends.

Other tips:

Insertion in the table is not the best function to use it.  Use the table build whenever you simply add data to the beginning or the end.  In this case, because you used the Insert table with an index of zero, you were probably get your row of data BEFORE the header line.

Get rid of the stacked sequence and replace it with a flat sequence.  Once you do this, you will probably find your code is already in order, due to data flow and can get rid of any type of structure in the sequence.

Your time loop inside another while loop probably gives you some implementation problems due to the race on the local variable Stop conditions.  Sure is a simple while loop.  The code for 'update settings' should be in a structure case linked to control rather than in one outer while loop.

Use your tools to debug such as probes and highlight performance.  You will then see why your code isn't doing what you want.

Tags: NI Software

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