Many users like to test out component VIs interactively before they include them in their application. This helps to select appropriate instrument configuration settings. To run the component VIs from their front panels, you will first need to run the Initialize VI. For subsequent VIs, you will need to first right-click the VISA Session control and select your resource name from the Open Sessions shortcut menu.
Once you have selected your resource. You can interactively run the component VI from the front panel multiple times without resetting the resource selection.
In general, you should run the component VIs in the order you want to call them in your application. First you run the Initialize VI, followed by one or more configuration VIs. If you are using a trigger for your measurement, you might need to call an action VI to arm the trigger. Calls to data VIs then collect the measured value(s). When you are finished testing the instrument driver component VIs, you should run the Close VI to deallocate resources.