SysML Block Definition Toolbox

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

You can also generate Property elements on the Block, based on the Association relationships created for the Block element. These Properties (or Parts) are initially created in the Project Browser, but you can quickly render them on the Internal Block diagram for the Block.

Access

On the Diagram Toolbox, click on to display the 'Find Toolbox Item' dialog and specify 'SysML n.n Block Definition' (whichever version you are using).

Ribbon	Design > Diagram > Toolbox
Keyboard Shortcuts	Alt+5

SysML Block Definition Objects

Item	Action
Block	Defines a composite system entity in SysML.
Actor	Represents a user that interacts with one or more SysML systems.
Interface Block	A specialized kind of block that has no behaviors or internal parts, which is used to type Proxy Ports.
Constraint Block	Defines a composite constraint as a system of parametric equations.
ValueType	Defines a SysML quantity, expressed as a measurable dimension with specific units.
Enumeration	Defines a data type as a set of symbols or values.
Interface	Defines an element that describes a specification of an interaction point with properties and methods.
Signal	Defines a SysML message, containing attributes, exchanged between system blocks in an interaction.
Instance Specification	TODO
Unit	Represents a standard unit of measure in SysML.
QuantityKind	Identifies a measurable quantity in SysML.
Property	Describes the decomposition of a SysML Block in the context of its whole, using instances of reusable SysML Blocks.
Flow Property	Creates a single kind of Flow element that can flow to or from a block.
Directed Feature	Generates an operation if dropped on a Block, or a DirectedFeature (Property) element if dropped on the diagram, both of which indicate that the associated Block either owns (provided) the feature, uses (required) the feature owned by another Block, or both (providedrequired). The direction value is defined in the 'SysML1.n' page of the Element Properties window, or the Tagged Values window for the element or the operation.
Port	Describes a structural interaction point of a SysML Block, which in turn connects interacting parts of a block.
Proxy Port	Exposes features of the owning Block or its internal parts.
Full Port	Specifies an element of the system separate from the owning Block or its internal parts.

SysML Block Definition Relationships

Item	Action
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
Dependency	Establishes a traceable relationship describing how one element is dependant upon another.
Generalization	Describes an element as a specialized descendant of another element, containing additional properties and behavior.
Containment	Graphically displays ownership of one element within a parent element.
Part Association	Describes the characteristics of a connection between a SysML Block and its internal parts, such as the multiplicity and type.
Reference Association	Describes the characteristics of a connection between separate SysML Blocks, such as the multiplicity and type.
Shared Association	Describes the characteristics of a common connection between SysML Blocks, such as the multiplicity and type.
Association Block	Describes an Association connector that is defined by a SysML Block.
Connector	Structural connection between Properties and Ports.
Allocate	Connects model elements to formalize a refinement of behavior, structure, constraints or design expectations.

SysML Patterns

Item	Action
Composite Block	A Pattern that creates a Composite Block, made up of Blocks related by Aggregation relationships.
Block with Parts	A Pattern that creates a Composite Block made up of nested parts.

SysML Deprecated

Item	Action
Flow Port	Describes what flows in and out of interacting SysML Blocks. This element type is deprecated. Instead create a Port that is typed by an Interface Block that owns Flow Properties.
Flow Specification	Defines a set of flow properties that correspond to individual pieces of a common interaction point. The element type is deprecated. Instead create an Interface Block that owns Flow Properties.

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