Function Block Diagram (FBD) Editor
"Function block diagram"
A function block diagram describes a function between input variables and output variables. A function is described as a set of elementary blocks Editor is a graphic tool used to enter and manage Function Block
A function block groups an algorithm and a set of private data. It has inputs and outputs. Diagrams according to the IEC
"International Electrotechnical Commission"
IEC is a not-for-profit, non-governmental international standards organization that prepares and publishes International Standards for all electrical, electronic and related technologies 61131-3 standard.
- The editor supports advanced graphic features such as drag-and-drop, object resizing, and connection line routing features to rapidly and freely arrange the elements of a diagram.
- Insert in an FBD diagram graphic elements of the FFLD (Ladder Diagram) language (e.g., contacts and coils).
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FBD Diagram Components |
Related Sections |
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Selecting and entering variables and FB instances
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FFLD Components |
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When a contact or a coil is selected, press the Spacebar to change its type (e.g., normal, negated, pulse).
Boolean connections can be negative at the entry of a block.
Execution order can be displayed.





