Adding a hierarchy to a chart

In Niagara 4.2 and later, you can directly add a navigation hierarchy to a web chart. When adding a Hierarchy node to a web chart on a Supervisor station, the chart navigates through the node looking for the hierarchy children based on the hierarchy definitions of that particular node, resolves them and initializes the web chart.
Prerequisites:
  • Persist Fetched Tags property in the Supervisor’s NiagaraNetwork is set to true
  • An existing Hierarchy node in the Hierarchy space where all devices, points and other components are already tagged and any necessary relations are already added.
  • Connected to a Supervisor station and subordinate station with hierarchy
  • Discovered hierarchy child points (configured with history extensions) on the subordinate station
  1. In the Nav tree, right-click on the Supervisor’s History space and select Views > Chart.
  2. From the Hierarchy space select the Hierarchy node you want to resolve and drag it onto the Chart.
The Hierarchy children under a Hierarchy node are added based on the Hierarchy LevelDef’s (Query, Relation, Group and List LevelDef’s) in the hierarchy definition.

When you drag a Hierarchy node to a webChart, the chart traverses through the Hierarchy children inside the node to find the furthest descendants (ones that have no children), examines those objects for any history extensions and plots their history. If no history extensions are found the webchart is initialized with data from the furthest descendant children of that Hierarchy node.

 NOTE: Regardless of the number of hierarchy children in the node, only the first 10 display in the webChart.