How to Create a SDL Diagram

Specification and Description Language (SDL) is a hierarchical diagramming language. SDL diagrams are used to visualize the architecture of real-time and event-driven systems involving many concurrent processes that communicate using discrete signals. ConceptDraw’s Specification and Description Language solution contains a complete set of scalable and versatile objects to diagram the structure of any engineering system.

1. Run ConceptDraw PRO.
2. Find the Specification and Description Language (SDL) solution in the Solutions panel.
3. Select the SDL library.
4. To add a library object to your drawing, just click on an object and then click on the page, at the place you want the object to be inserted.

5. To add text to an object just select an object and type. If you need to edit the existing text, double click an object to activate the text editing mode.

6. Connect diagram objects using the Connectors library, which contains connectors defined by SDL specification. Drag the connector from one connect dot to another.

7. Add text to connectors the same way you add text to objects.

Result: SDL diagrams can be used to represent telecommunication systems, railway control systems, automotive systems, remote control systems, and various robotic systems.