Windows XP serial port problems
I have a dell laptop at work that has windows 2000 on it and the serial ports worked great. I use the serial port to access PLC's from Allen Bradley.
Now, with the upgrade, the software cannot connect to the serial port. It gives me an error about some other app might be using the port.
I know the PLC is good and so is the cable/software. I have a second laptop (Identical, with 2000 still on it) and I was able to connect and get the job done.
Any tips on what is happening?