Clause 6 introduces References, the ProtocolType, and basic TopologyElementTypes needed to create a communication topology. The types for this model are illustrated in Figure 19.

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Figure 19 – Device communication model overview

A ProtocolType ObjectType represents a specific communication protocol (e.g. FieldBus) implemented by a certain TopologyElement. Examples are shown in Figure 21.

The ConnectionPointType represents the logical interface of a Device to a Network.

A Network is the logical representation of wired and wireless technologies.

Figure 20 provides an overall example.

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Figure 20 – Example of a communication topology