Cause

Within a configuration project bus ports that are part of the same physical network <x> are not connected to each other.

This check run shows you at which points you divided the network. Whether this is an error or not depends on the network structure. During the PLC data exchange in the AutomationML AR APC format bus ports within the same bus system and the same physical network (Physical network: Name property) are considered as connected with each other even if they have different DTs. Such bus ports, however, are considered as not connected to each other. This message can be ignored by you if you have deliberately configured the network structure this way because of its physical circumstances.

Solution

1. Locate the bus ports in the schematic by using the functionalities Go to (graphic) and Go to (2nd coordinate), which the popup menu of the Message management dialog offers you.
2. Connect the bus ports that belong to the same physical network by inserting the connection symbols (for example angles and / or t-nodes).
3. Update the connections.
4. If required, start a new check run.