Using the FBD Toolbar

Show the execution order of the elements in the diagram.

In this mode, the mouse is used to insert a rail that collects several Boolean data flows for an OR operation.

This is used to insert parallel contacts, as in Ladder Diagrams.

In this mode, the mouse is used for inserting blocks in the diagram.

• Click in the diagram and drag the new block to the desired position.
• The type of block inserted is the one currently selected in the list on the main toolbar.

In this mode, the mouse is used to insert a coil in the diagram (e.g., Ladder Diagrams).

It is not required that a coil be connected on its right side.

In this mode, the mouse is used for inserting comment text areas in the diagram.

• Comment texts can be entered anywhere.
• Click in the diagram and drag the text block to the desired position.
• The text area can be selected and resized.

In this mode, the mouse is used to wire the input and output pins of the diagram objects.

• The line must always be drawn in the direction of the data flow:
  from an output pin to an input pin.
• The FBD editor automatically selects the best routing for the new line.
  • You can change the default routing by inserting corners on lines.
  • See Insert Corner.
• You can drag a line from an output pin to an empty space.
  • In this case, the editor automatically finishes the line with a user-defined corner.
  • Continue drawing the connection to the designated pin and force the routing while drawing the line.

In this mode, the mouse is used to insert a contact in the diagram (e.g., Ladder Diagrams).

In this mode, the mouse is used for inserting a user-defined corner on a line.

• Corners are used to force the routing of connection lines.
  • The FBD editor imposes a default routing only between two pins or user-defined corners.
• Corners can be selected and moved to change the routing of existing lines.

In this mode, the mouse is used to insert jump symbols in the diagram.

• A jump indicates the execution must be directed to the corresponding label (having the same name as the jump symbol).
• Jumps are conditional instructions.
• Jumps must be linked on their left side to a Boolean data flow.

In this mode, the mouse is used for inserting a label in the diagram.

• A label is used as a destination for jump symbols.
• See Insert Jump.

In this mode, the mouse is used to insert a left power rail in the diagram.

• A left power rail is an element of the FFLD language.
• It represents a TRUE state that used to initiate a data flow.
• Power rails can be selected and resized vertically according to the desired network height.

In this mode, the mouse is used for inserting a horizontal line that acts as a break in the diagram.

• Breaks have no meaning for the execution of the program.
• Breaks aid in the understanding of big diagrams by splitting them into a list of networks.

In this mode, the mouse is used to insert a right power rail in the diagram.

• A right power rail is an element of the FFLD language.
• It is used for terminating Boolean data flows.
• It is not required to connect coils to power rails.
• Right power rails have no meaning for the execution of the diagram.

In this mode, the mouse is used for inserting variable tags.

• Variable tags can be wired to the input and output pins of the blocks.
• Click in the diagram and drag the new variable to the its position.

In this mode, you cannot insert any elements into the diagram.

• The mouse is used to select object and lines, select tag name areas, or move or copy objects in the diagram.
• Press the ESCAPE key to return to the Selection mode.