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 powerful graphical tool that enables you to enter and manages
Function BlockA 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, so that you can rapidly and freely arrange
the elements of your diagram. It also enables you to insert in a FBD diagram
graphic elements of the FFLD (Ladder Diagram) language such as contacts and coils.
| FBD diagram components | Related sections |
|---|---|
| Function blocks
Variable tags Comment texts Corners Network breaks Labels Jumps Use of ST instructions |
Using the FBD
toolbar
Selecting function blocks Drawing connection lines Selecting and entering variables and FB instances Viewing the diagram Moving or copying parts of the diagram Inserting an object on a line Resizing objects Bookmarks |
| FFLD components: | |
| Contacts Coils "OR" vertical rail Power rails |
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When a contact or a coil is selected, you can 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.
