This use case, illustrated in Figure 13, typically applies to AutomationComponents that host multiple FunctionalEntities and/or nested FunctionalEntities.

Figure 13 – Multiple Connections using unicast network messages (aggregated)

Figure 13 illustrates two Connections, each between two PubSubConnectionEndpoints. Each PubSubConnectionEndpoint on AC_A (and similarly on AC_B) references a DataSetWriter (and DataSetReader) that is located under the same WriterGroup (and ReaderGroup).

The PubSub instances are configured to exchange data between AC_A and AC_B using unicast NetworkMessages. This use case is called aggregated because a single NetworkMessage aggregates multiple DataSetMessages (one per logical connection). Aggregation reduces the required network bandwidth.