That still makes no sense. You still have no idea what the Find VISA Resources does and how to use it. Did you look at the example code I provided and read the text inside the for loop? You have done nothing like I said to do and since you posted before you could have possibly taken the tutorial, it's pretty obvious you are not interested in learning.
Instead of trying to automatically find the com port that the instrument is connected to, just place a VISA Resource Name control on the front panel. Let the user select the port from the drop down list. If the user has to guess which port, so be it. I am not inclined to give any more help.
