I have 2 USB ports on my laptop which are com 5 & 6. I have a program that needs com 1, 2, 3, or 4. Can anybody tell me how to assign a different port number to my USB ports.
Normally, the driver that emulates the COM port will have a provision to change the emulated COM port. Have you looked in Device Manager under the properties of the emulated COM port?
In my device manager under Ports(com & LPT) it says "Prolific USB-to-Serial comm port 5" if I go under port settings> advanded my com port number is ghosted. Maybe if I explain what I am trying to do it will help... I have a mini PLC that I am trying to hook up to my computer with and USB to Serial adapter. It works fine on another laptop in the office that has a 9 pin serial port in the back.
It is my PLC software that is looking for com 1 to 4... not the hardware. My PLC is plugged into my USB port. Can you tell me how to tell what is connect to ports 1 to 4. I need to make one my USB ports 1 to 4. Is there any way of doing this through windows.
Knowing the make and exact model of the mystery device you're trying to connect might help. You say it's not the hardware, but you're plugging in hardware, right? I presume the folks to really answer this question is whoever made the PLC (whatever that is).
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