Clause 5introduces References, the ProtocolType, and basic TopologyElementTypesneeded to create a communication topology. The types for this model are illustrated in Figure 16.

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Figure 16– Device communication model overview

A ProtocolType ObjectTyperepresents a specific communicationprotocol (e.g., FieldBus) implemented by a certain TopologyElement. Examples are shown in Figure 18.

The ConnectionPointTyperepresents the logical interface of a Deviceto a Network.

A Networkis the logical representation of wired and wireless technologies.

Figure 17provides an overall example.

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Figure 17– Example of a communication topology