SE401:Group19:Introduction to Function Block Diagrams

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Introduction to Function Block Diagrams

Examples

This diagram shows a typical function block diagram:

File:SE401-Group19-FunctionBlockDiagram.gif

Function Block Diagrams are comprised of a number of function blocks such as the one below:

File:SE401-Group19-FunctionBlock.gif

Each block has a number of inputs and outputs. These may be one of two types (Event input/output or Data input/output). In a function block diagram these inputs and outputs are connected in a meaningful way in order to capture the functionality of the system.

Each function block can be programmed internally in a variety of languages. The following is a block which has been programmed as a state transition diagram:

File:SE401-Group19-StateTransitionDiagram.gif