Page History

...

Reference → Controls → Charts → Knowledge GraphKnowledgeGraph

Version 10.1.5+

...

Overview

The Knowledge Graph control (XAML element TKnowledgeGraph) renders the UNS UserType hierarchy and per-Tag relationships as an interactive node-and-edge graph. Operators pan, zoom, and click nodes to inspect the underlying assets; node selections flow back into Tag-bindable properties so the rest of the Display can react to graph interaction.

...

• Naming history. The control was named TOntologyChart during the 10.1.5 preview period. The shipped name is TKnowledgeGraph; the old name was retired with no back-compatibility alias. Preview-period solutions persisting the old element type must re-add the control in the 10.1.5 Designer (see the Release Notes → Update 5 (Preview) Known Issues table).

• One source, many controls. Multiple Knowledge Graph controls on the same Display share the same source column — they all render the same graph. To show different views of the same ontology, post-process the source in a Script Task before placing it in the column.

• Companion features. Pairs with the Industrial Ontology Integration How-to import workflow and the Local AI Ontology Demo solution LocalAI KnowledgeGraph Demo solution.

• Design-time preview is recognition-only. When the control is placed on a Display in the Designer, it renders a fixed 6-node hand-positioned sample (Asset → Plant1/Plant2 → PumpA/PumpB/TankX) rather than the live KnowledgeGraphSource. This is intentional — at design time, the goal is recognition (“the Knowledge Graph slot lives here”), not precision. The runtime cytoscape render is the source of truth for the customer’s actual ontology.

• Auto-fit on resize. The runtime cytoscape graph automatically refits its viewport when the host container resizes — window resize, panel collapse, splitter drag, or any intra-window layout shift. Debounced at 150 ms. The toolbar’s Fit button remains as the manual recovery path.

...

In this section...

...