MBSE with GENESYS 073122

Reminder: Functions and Items

Functions • A process that transforms inputs into outputs • An action taken by the system or one of its elements • Represented by a verb or verb noun pair

Items • Cross the system (or component) boundary • Passive things that are inputs and outputs of our system • Can be data, signals, force, physical objects

Color Code

Component

Component

Requirement Element

Functional Element

input to / triggers

performs

performs

Physical Element

Interface Element

outputs

Item

Verification Element

Other Element

Function

Function

Item

input to / triggers

outputs

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Reminder: Conditions for a Function to Execute

• Execution • Before execution begins a function must be enabled and triggered, if a trigger is defined • Enablement • A function is enabled upon completion of the function prior to it in the construct • Triggers (a control concept) • An item that also provides a control role • Defined by the triggers relationship • Shown with double arrowhead on EFFBD and single arrowhead on activity diagram • Inputs (item flow concept) • An item that does not provide a control role • Defined by the input to relationship • Shown with single arrowhead on EFFBD and decorator <> on activity diagram

An item may be a trigger for one function and an input to another function

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MBSE with GENESYS