We use the Edgeport/22c to extend our computer so that we can open 3 serial ports. We use 1 of the 22c's per tool we ship. We use the motherboards's com1 to talk to our controller and we add 2 more computers using the 22c, and configure those as COM2 and COM3. Computer is a Dell Optilex 330 running Windows XP sp2.
We can communicate thru COM1 and COM2 fine to our controllers, however, COM 3 does not work. If we uninstall the Digi driver, and then reinstall from the CD that shipped with the 22C (v4.50), reboot the PC, we can now talk to COM3. However, now COM1 no longer works. Then we uninstall the drivers againn and reinstall and open com1 and 2, they work, but now COM3 no longer works.
If we swap the Computer, and go thru what we think is the same setup, everything works again. I might be tempted to say that the computer is at fault, but it is odd that we can get all the computers working, just not at the same time. Also this has happened once before on a different computer.
If possible, please send a response to firstname.lastname@example.org as well as this forum.