Hi Dennis,
I didn't notice you 'p.s.' until now. I had known that the execute button does nothing and was trying to think of a solution where it doesn't run until I hit the 'Execute'. Do I need to put that in a loop of sorts in order to run it the way I want?
'In your subVI, you also reconfigure the serial port and close it.' I'm not quite understanding this but I'll take a look around and see what info I can find online. Thanks.
Jon