Niagara N4 JSON Point Exporter

A lightweight Niagara N4 Program object that exports live control point values from a selected folder to a JSON file in the station shared directory.

This tool is intended for simple data access, lightweight dashboards, commissioning checks, testing, and small integrations where a full middleware platform is unnecessary.

What it does

• Reads live control points from a configured Niagara folder

• Exports the first configured number of points to valid JSON

• Includes point name, ORD, type, output value, and status

• Writes the JSON file to the station shared folder

• Supports a configurable source folder and output folder

Required slots

Create the following slots on the Program object:

Example slot values:

sourceOrd: slot:/Drivers/NiagaraNetwork/MySite/points/AHU_01
maxPoints: 10
outputFolder: firstTenToJson

Output location

The JSON file is written under the station shared folder.

Example:

shared/firstTenToJson/AHU_01/AHU_01_first10Points_20260605_224329.json

Example JSON output

{
  "exportTimestamp": "2026-06-05T22:43:29+1000",
  "sourceName": "AHU_01",
  "sourceOrd": "slot:/Drivers/NiagaraNetwork/MySite/points/AHU_01",
  "maxPoints": 10,
  "count": 10,
  "points": [
    {
      "index": 0,
      "name": "Return_Temp",
      "ord": "slot:/Drivers/NiagaraNetwork/MySite/points/AHU_01/Return_Temp",
      "type": "control:NumericPoint",
      "out": "24.5 {ok} @ 16",
      "status": "{ok} @ 16"
    }
  ]
}

Use cases

• Simple web dashboards

• Commissioning pages

• Point visibility checks

• Lightweight integrations

• Testing JSON export from Niagara without paid middleware

• Local tools that need live point values

Notes

This is a simple file-based JSON exporter. It is not intended to replace a secured API, full integration platform, or enterprise data pipeline.

Review station permissions, shared folder access, and network exposure before making exported files available outside a trusted environment.

Limitations

• Exports live point values only

• Does not export histories

• Does not parse numeric value, status, and priority into separate fields yet

• Does not provide authentication or access control by itself

• External access depends on Niagara station and web server configuration

Version

Initial test release.

Built to prove that Niagara N4 can export live point data to JSON using a standard Program object and file output.

Copyright - Free for any use