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Custom Web Control
About Nested Pie Chart
The Nested Pie Chart is a sophisticated Custom Web Control (CWC) designed for WinCC Unified and WinCC V8 environments. It provides a powerful dual-ring visualization for hierarchical data breakdowns, allowing operators to view high-level categories on an inner ring while simultaneously inspecting granular details on the outer ring. This control is engineered for high-density information displays where relationship mapping is critical for process understanding.
Key Features
- Hierarchical Data Visualization: Effortlessly map parent-child relationships using the innerSectors and outerSectors data arrays.
- Interactive Operator Experience: Features a built-in SectorClicked event to trigger HMI navigation or detailed pop-ups, alongside a resetSelection method for programmatic control.
- Industrial Theming: Support for both 'light' and 'dark' modes via the theme property ensures the chart matches any SCADA style guide.
- Smooth Transitions: Adjustable animationDuration provides fluid visual feedback during data updates or PLC tag changes.
Customization
Engineers have full control over 17 adjustable properties. You can define the precise geometry of the rings using innerRadius, outerRadiusStart, and outerRadiusEnd. For clarity, the unitLabel, titleText, and subtitleText can be bound directly to PLC tags. Visual legibility is further enhanced by configuring labelRichBackgroundColor and labelLineLength to ensure data is readable even in complex dashboard layouts.
Use Cases
Ideal for energy management dashboards (Total Load vs. Departmental Consumption), alarm distribution analysis (System Category vs. Specific Faults), and production yield tracking (Batch Total vs. Component Quality).
Compatibility
Works with WinCC Unified (TIA Portal) and WinCC V8. Full support for property binding to HMI and PLC tags is included.
💡 TIA Portal Reminder: Remember to uncheck the "Read only" option in TIA Portal when linking a tag to a property that needs to be written from the Custom Web Control. If you do not, the CWC will only be able to read the HMI tags and not write to them.
⚠️ AI-Generated: This custom web control was automatically generated using AI. Please test and validate its performance in a non-production environment before full deployment.
⚠️ AI-Generated: This custom web control was automatically generated using AI technology. It may contain errors or unexpected behavior. Users are responsible for testing and validating before using in production environments.