Auto-Zone Control Systems CommLink 5 Technical Guide, Installation Instructions for the CommLink 5 Communications Interface (Version 01G) - Manual (Page 15)

CommLink 5 Technical Guide
15 Operator Interface
Troubleshooting the COM Port Number
4. To assign a port number less than 10, click on
. The Advanced Settings Window
will appear.
5. In the COM Port Number drop box, select which COM
port you wish to use. Make sure you select a COM port
number that is not currently in use (you can see the ports
in use in the Device Manager Window). Select a port
number that is less than 10.
NOTE: Windows ® will assign a port number to every device
that has ever been installed on your computer. So if
there are no available ports below 10, choose a port
number less than 10 for a device listed that you know
you are not currently using.
6. Once you select the correct COM port number, click
and close any windows opened in the process
of changing the port number. Make note of this number
because you will need it for your Prism 2 setup.
Changing the USB COM Port Number
When the CommLink 5 is fi rst plugged in, it will be assigned a
COM port number to be used for communicating with the Prism 2
software. If the port number is 10 or greater, it needs to be changed
to a value less than 10 to be recognized by Prism 2.
1. Click , click , click
, click the tab, and then click
to get to the Device
Manager Window.
2. Click on the plus sign next to Ports to see all of the COM
ports.
3. Right-click on “USB Serial Port (COM#)” and select
. In the Properties Window, select the
tab.