Configure PXI Controller COM ports to be consistent with your system design if the System
Verification operations reports a COM port number assignment error. Read the following
instructions for information on how to correctly assign a PXI controller port
Open Windows Device Manager.
, and right-click to select
Click Advanced..., and select a port binding from the
COM Port Number drop-down list.
When swapping COM port number assignments between two ports, set one of
them to an unused port number first to avoid setting two ports to the same
If you get an error when changing the COM port number, reboot the machine
and try again.
After configuring new port bindings, close the Properties
window, right-click the Communications Port in Windows Device
Manager, and select Scan for Hardware changes to apply
Open the NI Max application and expand the Devices and
section and verify the COM port number updates for your
These final steps are necessary for your new COM
port number bindings to be visible to Test System Maintenance