PLC ViewerApp during runtime
- Last UpdatedJul 18, 2024
- 2 minute read
The following figure shows an example of the PLCViewerApp during runtime. The app starts with the default controller assigned during configuration.

The Assets & Function Block Templates column at the left shows a hierarchical navigation tree of the controller's Rockwell programs. For example, the figure at the left below shows a Rockwell alarm handler routine. The figure at the right shows the same routine displayed by the PLCViewerApp. The SIZE and SUB function blocks show the same values in both figures. In the PLCViewerApp, current asset values appear next to the function blocks with a blue background.
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Users select an item listed in the Assets & Function Block Templates column to set the context of controller information shown by the PLCViewerApp.
The PLCViewerApp incorporates color animation to identify the current state of data:
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Grey: Binding
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Purple: Bad data
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Cyan: Good data (background color is used to highlight animated values)
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Blue: Private (indicates the data is not accessible to the HMI)

