Configure NI Serial Module 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 an NI serial module port
Run the NI MAX application as an administrator by right-clicking the
application shortcut and selecting Run as Administrator.
You must run the application as an administrator to enable COM port number
Select the COM Port you want to update.
Click on the Advanced tab.
Change the COM port binding from the COM Port Number
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.
Save changes by clicking .