Network diagnostic tool for testing and commissioning building systems

A building system, comprising:

• a data processing system including a processor, and an accessible memory, wherein the processor is configured to:
• receive a building system diagnostics configuration,
• transmit, to a field device, a request for diagnostic data based on the building system diagnostics configuration,
• receive, from the field device, the diagnostic data corresponding to the transmitted request, wherein the diagnostic data includes additional data for analysis of the field device in the building system;
• process the diagnostic data, wherein to process the diagnostic data includes determining a delay in propagation of an alarm event over a plurality of networks based on a timestamp of the alarm event appearing on an internal communication network of a first fire panel, a timestamp of an inter-panel communication network, and a timestamp on an internal communication network of a second field device;
• verify a health or condition of the field device using the additional data before a trouble condition is detected;
• identify a potential issue of the field device before the building system is aware of an actual issue related to the potential issue and before the building system reports the actual issue;
• generate a report based on the processed diagnostic data, the verified health or condition of the field device, and the identified potential issue of the field device, wherein the report indicates the delay in the propagation of the alarm event over the plurality of networks;
• and
• store or display the report;
• and
• the field device including a programmable controller, a storage, and a sensor, the programmable controller configured to:
• store the diagnostic data related to functions of the field device,
• receive the request for diagnostic data from the data processing system, and
• transmit the diagnostics data related to the request to the data processing system.