Continous writing in the external text file

I'm trying to build a VI in labVIEW that will supply a decimal value based on a binary file to enter a box structure. The structure of the case will display a string value according to the decimal places of entry. The problem that I wrote the string value to a text file that will continue to write while the Vi is constantly running.

Here are a few suggestions (you'll learn a lot more if you try to do this yourself, instead of my giving you a 'solution').

  • You have 8 Boolean commands.  Consider making a table (size 8) Boolean controls (among other things, it does help group them for you).
  • If you look at the range of Booleans, you will see a function of "array of numbers.  Guess what that so "feed you" an array of Boolean 8...  You can eliminate a lot of code by doing this.
  • Your numbers are all integers, so it is not sensible to save as a double.
  • You have a configured here While loop.  What you think about quick check how it works?  Do you care?  Do you want to it is running "as fast as possible?  Do you want it to run at a fixed speed (for example, a loop per second)?  Do you want it runs 'when something happens?
  • Good thing you have done, is recognize that the task of recording has three parts - Open (performed only once), Write (done as often as necessary) and closed (performed only once).  You also correctly positioned the relevant functions before, inside and after the while loop.  I'm not 100% certain it's important in this particular case, but usually when we done that and has a While loop, running on the same "variable" on several occasions, the wire is put in a shift instead of a pair of tunnels register.  Even if it is not necessary here, it would be a good change to make, because it will be necessary in other cases.

I did not actually run your code, but do not see something terribly wrong with it.  Try to make the changes I suggested (which will allow you to significantly reduce the size of your VI).  Special attention to the question of the 'speed '.  If you republish your "improved" VI (and thanks for posting it), you could describe a little better "the problem I have" - what do I do, or what he does not?

Bob Schor

Tags: NI Software

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