Overview
Once IEDs are placed in the System Diagram and Functions are defined in the Function Specification, the next step is to bind the specification to the implementation: tell STS which real IED implements each virtual IED, and which Logical Node in that IED corresponds to each Logical Node in the specification.
The workflow has three steps:
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Implement the virtual IED — assign a real IED to a virtual IED.
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Map Logical Nodes — for each Logical Node in the specification, identify its counterpart in the implementing IED. This is done in the Mapping Dialog, either manually or automatically.
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Resolve unresolved signals — if the implementing IED's Logical Node does not expose the same data as the specification's Logical Node, rebind the affected signals to alternative data points in the IED.
A less common alternative workflow is described on the child page Bottom-Up Engineering — Logical Nodes present in an IED can be pulled back into the specification rather than the other way around.