WH600 Modbus   

Standard WeatherHawk software applications will not function if connected to a MODBUS configured WeatherHawk weather station. You will need one of the following Utilities to download the OS and program into your WeatherHawk 600 Serie using Device Configuration (DevConfig). This download is available for free on this site.

Be sure to use the correct download link for the WeatherHawk 600 Series weather station you are using.