Error: Device does not refer to a COM port when downloading an application to a Xenta 400/300/2xx controller

Issue

"Error: Device does not refer to a COM port" when downloading an application to a Xenta 400/300/2xx controller

Product Line

TAC Vista

Environment

Xenta 281, 282, 283, 301, 302, 401

Cause

This message means that the LonWorks network in the Vista database doesn’t have any COM port (LNS port) defined. The problem is usually caused when you start a different LonMaker network but forget to change the Vista database directory. When a "update Vista db" is done from the system plug-in instead of adding or updating the correct database, a second network has been added to the Vista db. You now have 2 LonWorks networks in your Vista db but only one communication port.

Resolution

  1. Delete the incorrect LonWorks network
  2. Open the correct LonMaker drawing
  3. Update the Vista Db once more to make sure everything is in sync.
  4. For the second LonMaker drawing, specify the correct Vista db directory in Vista Server Setup and update the Vista db.