too many comm usb ports

Hello

I ran into what may be soon, where we test units that have built in USB ports that appear as serial comm ports. The problem is that whenever we connect to an object that has not been run on this computer until Windows assigns it a new com port number to measure. My concern is that fast enough, as the production line is in full swing, we will hit the 'magic number' of 255, the highest number of com port and I have not any idea that Windows will do at this point. Before you begin to write the code to analyze the new com port number returned by VISA and adjust"registry entries accordingly, I want to know if it's necessary. I think there are a couple of possible scenarios, Windows complains and it won't deliver a com port #, that Windows starts from the beginning, or that Windows strikes only 255, then keeps the front it. I'd rather it be at least two, won't my program messing around in the registry and really have no time at the moment, nor access to the machine (s) to experiment to see.

Thank you


Tags: NI Software

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