Object Connection Types, typically bound with the standard. They can be defined manually to determine how design objects may be related to other design objects.
Example: The relationship between a Relief Valve and a Pressure Vessel, where many sub-entity relief valves lead to a single super-entity pressure vessel, can be defined as an object connection type as below:
| Class Relation Super Description | Class Relation Sub Description | Object Connection Super Description | Object Connection Sub Description | Super Only One option | Sub Only One option |
| can affect | can be affected by | affects | is affected by | selected | cleared |
Once object connection types are defined, they should in turn be defined as Class Relations to show how objects of one class should be related to objects of another class. For example:
| Class | Class Relation Description | Class |
| VALVE RELIEF | can affect | TANK & PRESSURE VESSEL |
Once Class Relations are established, they can be used in Design Object Connections where design objects of one class can be connected to design objects of another class, based on the object connection types defined for a particular class in class relations. For example:
| Plant | Object | Object Class | Sort Order | Object Connection Description | Connected Object | Connected Object Class |
| Main Plant | RV-001 - Relief Valve 1 for Tank 1 | VALVE RELIEF | 1 | affects | TNK-01 | TANK & PRESSURE VESSEL |
Object connections will then appear under the Object Connections sub menu of the Design Object page.