The disclosure provides an HVAC data processing and communication network and a method of manufacturing the same. In one embodiment the network includes a system device and a user interface. The system device is configured to generate and locally store an alarm record in response to an alarm event. The system device is further configured to receive an alarm request message via a data bus. In response to receiving the alarm request message, the system device is configured to publish an alarm reporting message over the data bus. The user interface is configured to receive the alarm message and display an alert depending on a state of the flag.