How to Create an XPressNet Log File

Start Decoder Pro (or the JMRI demo) Open the XpressNet Monitor (this is in the XPressNet submenu of the "Systems" menu)

You will see a window like the following: XPressNet Traffic Monitor Image
Next Click the "Choose log file" button, and choose a log file to use (you can use the default name, the important thing is to know where the file is)
After you click save in the dialog box, click the "Start Logging" button on the monitor.
Now you can perform whatever actions you want to perform.
Finally, go back to the XPressNet Monitor window, and click the "Stop Logging" button.
You can now quit the application, or continue working.