Configuration of the plant model
When the configuration of a visualization solution begins, the development of the automation solution often takes place in the final phase. Initially, only the actual plant structure is relevant for mapping the plant model. Whether this involves one or multiple target systems is initially irrelevant.
There are always two views in a WinCC project:
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Device view with configured target systems
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Object-oriented view (common plant model)
You can perform configuration independently in both views.
Process connection of the plant model
The target systems are the interface between the common plant model and the process. One or more connections to PLCs are configured on each target system. The plant objects communicate with the PLCs over the target systems.
Your project must meet the following conditions for productive use:
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Each plant view is assigned to a HMI device.
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Each plant object with a process connection is also connected to a PLC.
The following figure shows a schematic representation of the mapping of plant objects to the configured target systems and PLCs:
