Programmatically changing a COM port number

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Hello All,

I have a USB to RS-232 device which I use to communicate with various equipment. However, whenever I plug it into a USB port then COM port number changes from the last time I plugged it in, for example, yesterday it registered as COM1 and today it is COM8.
Now, I know I can go into the device manager and change it manually, but that is a pain. I would like to write a script that I can run and it will look for my device, get its assigned com port number and change it to the number I want (for example, I always want it to be COM1).
The reason I need this is because I am using a commercial application that is set to use only that particular com port.
So, where do I start?

Thanks,

Sean

Posted 2-Feb-11 8:27am

Sean Robert Wright

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Sergey Alexandrovich Kryukov · Answer 1 · 2011-02-02T08:34:00

Solution 1

Well, first and best advice would be to trash your "commercial application" and blacklist the company which develop this stuff :). Well, beyond the jokes...

If you cannot afford that step, there is a class of utilities called "COM Port Redirector"; it will do the trick. See:

http://en.lmgtfy.com/?q=com+port+redirector[^]

Good luck!

—SA

Posted 2-Feb-11 8:34am

Sergey Alexandrovich Kryukov

Updated 2-Feb-11 8:54am

v2

Comments

fjdiewornncalwe 2-Feb-11 14:41pm

Excellent sense of humor... (ummm.. Link too)

Sergey Alexandrovich Kryukov 2-Feb-11 14:53pm

Thanks a lot, Marcus.

This is not just humor, this is real life. Working in the companies which use legacy is a fight to replace the legacy with something that really works, also fighting with morons who think this is just waste if time :-) -- yes, ugly truth of real life.
--SA

Espen Harlinn 2-Feb-11 15:48pm

Practical answer, 5+