SysML Internal Block Toolbox

When you are constructing SysML models, you can populate the Internal Block diagrams using the icons on the SysML Block Internal pages of the Diagram Toolbox.

The Block that owns the Internal Block diagram is automatically represented by a diagram frame enclosing the Internal Block diagram elements. You can:

·Hide the frame by right-clicking on the diagram and selecting the Hide Diagram Frame context menu option
·Make the frame selectable to move or resize it, by right-clicking on it and selecting the Selectable context menu option
·Create Ports and Parts on the frame and create connectors between them
·Generate Property elements on the diagram inside the Block frame, based on the Associations that the Block element has on the Block diagram

Access     Diagram | Diagram Toolbox: More Tools | SysML 1.3 | SysML 1.3 Internal Block


SysML Internal Block Objects




SysML Block Internal


Describes the decomposition of a SysML Block in the context of its whole using instances of reusable SysML Blocks.


Connector Property

Creates an instance of an Association Block.


Distributed Property

Creates a stereotype of Property, to apply a probability distribution to the values of the property.


Flow Property

Creates a single kind of Flow element that can flow to or from a block.


Participant Property

Creates the end of a connector owned by an Association Block.



Defines a SysML message, containing attributes, exchanged between system Blocks in an interaction.



Describes a structural interaction point of a SysML Block which, in turn, connects between interacting parts of a block.


SysML Block Internal Relationships


Establishes a traceable relationship describing how one element is dependant upon another.


Item Flow

Specifies the items that flow across a connector in an interaction point.  Used in the same way as UML Information Flows.

See Using Information Flows



Establishes Communication links between parts. (See also: Connector.)


Binding Connector

Establishes a connection between two parts in a system decomposition.


SysML Deprecated

Flow Port

Describes what flows in and out of interacting SysML Blocks.


Flow Specification

Defines a set of flow properties that correspond to individual pieces of a common interaction point.


Learn more