Draw FBD connection lines
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Press this button before inserting a new line. |
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As shown below, the editor enables you to terminate a connection line with a Boolean negation represented by a small circle:
(* use of a negated link: Q is IN1 AND NOT IN2 *)
To set or remove the Boolean negation, select the line and press the Spacebar.
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Block: Refer to the help on the block for the description of its input and output pins, and the expected data types for the coherence of the diagram. |
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Variable: A variable can be connected on its right-hand side (to initiate a flow) or on their left-hand side to force the variable, if it is not "read only". The flow must fit the data type of the variable. |
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Jump: a jump must be connected on its left-hand side to a Boolean data flow. |
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Left power rail: Left power rails represent a TRUE state and can be connected to a non limited number of objects on their right-hand side. |
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Contact: A contact must be connected on its left-hand side and on its right-hand side to Boolean data flows. |
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"OR" rail: Such a rail collects several Boolean data flows for an "OR" operation, in order to insert parallel contacts, as in Ladder Diagrams. It may have several connections on its left-hand side and on its right-hand side. All connected data flows must be Boolean. |
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Coil: A coil must be connected on its left-hand side to a Boolean data flow. It is not mandatory that a coil be connected on its right-hand side. |
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Right power rail: A right power rail is an element of the FFLD language, and is commonly used for terminating Boolean data flows. It has an unlimited number of connections on its left-hand side. It is not mandatory to connect coils to power rails. |
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Connection lines automatically move and follow FBD elements (1) and you can also manually specify the corners. Simply double-click on the line to show a "handle" (2) which can be repositioned (3).