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reference

The element <reference> describes the engineering object of the graphical connection. This specifies, between which object type connections can be made and in which direction a connection can be made.

Further elements, which are required for specifying of connections:

Attribute name Usage Attribute values Default value Description
applicableTo optional, only for type = connected Formula, which determines, if the current reference fits to the given engineering object.
connectedObjects optional, only for type = connected Formula for connected objects
id required ID of the element
src optional Formula for the validity of a source object type
target optional Formula for the validity of a target object type
type required connectable
connected
containment
Defines the reference type:
connected = determined by the model
connectable = can be created in the diagram
containment = describes the relation to nodes, which are placed in a container that is not part of the composition
Allowed sub-elements Quantity
backward 0 through 1
forward 0 through 1
sourceNodeType 0 through 1
targetNodeType 0 through 1