I do hope you have access to a more recent version of LabVIEW than LabVIEW 5.0! On what kind of machine and what OS is it running?
I'm sure you know that (modern) LabVIEW says the errror is "VISA: (Hex 0xBFFF001F) The specified attribute is read-only." This is puzzling, as there are only two VISA functions in your code (and they are the only ones on the Error Line, unless an Error is "passed into" this VI -- you should check on that!). I just noticed that your first VISA function is a VISA Write, but I don't see any code to establish a VISA connection anywhere. That's a logical first place to look.
It's probably not a good idea to run 25-year-old software on a 25-year-old computer running a 25-year-old OS. The cost of computers (complete with the latest versions of Windows or MAC OS) are quite reasonable, and even a one-time purchase of "modern LabVIEW" (provided you can get a "perpetual license" that you can continue using without upgrading yearly) makes great sense (a whole lot has been "improved" in the last quarter-century).
Bob Schor
