Ensure that when FX CommPro N2 tools starts and you are asked to specify a COM port, you enter a COM port that corresponds to the COM port specified in the setup for the Serial Tunnel.
Verify that the COM port is not used by another Windows application.
FX CommPro Download

| Note: | To download a legacy FX Field Controller in this manner, you must set the N2 Network timeout parameter to 1200 ms. If you do not set the timeout value, the download fails due to a communication timeout. For more information, see Setting the Network Timeout in FX CommPro N2. |
| Note: | If you connect to the N2 port via FX CommPro N2, you must set the Enabled property of the JciN2Network to false. This action allows FX CommPro N2 to communicate with the N2 trunk. The N2 cannot actively poll the trunk when attempting to download a controller on that trunk. After you finish with the configuration tool, make sure to set the Enabled property of the JciN2Network to true. This action allows normal N2 communication activity to resume. |
| Johnson Controls, Inc. http://www.johnsoncontrols.com |
| Product Literature: http://cgproducts.johnsoncontrols.com |
| Code No. 12011149 |
| Software Release 5.1 |
| Issued November 18, 2013 |
| Supersedes August 2, 2011 |
Copyright © 2013 Johnson Controls Inc. All rights reserved.