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Modify CWC properties from external events | WinCC Unified

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This demo project for SIMATIC WinCC Unified shows you how to access and modify Custom Web Control (CWC) properties at runtime from an external event, such as a button click.


Learn the method to programmatically interact with a CWC from a separate control. While you can use standard WinCC Unified dynamizations for direct bindings, this project reveals how to call and alter CWC properties from an independent script. This is essential for building more complex and interactive user interfaces.


A practical use-case is demonstrated: a CWC in the form of a table has its content dynamically changed by an external button. This example provides the key insights needed to master this advanced technique.


Deliverables include:


  • A ZIP file with the demo project, built on TIA Portal V17 and ready to be upgraded to newer versions.
  • A video file demonstrating the complete functionality.
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Last Update:Feb 17, 2026
Published:Aug 8, 2025
Layout:SIEMENS - SIMATIC
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