Hi, 1. You must setup VISA drivers first. It is ussual problem when someone tries to use VISA functions without installed driver. To install driver you must run your Labview install disc and check this option there. 2. Also check if your COM ports are enabled in BIOS and in Control Panel->System->Device manager. 3. And then check how VISA works in MAX.
Good luck. Oleg Chutko.
