The connective junction enables representation of different possible transition paths for a single transition. Connective junctions are used to help represent the following:
Variations of an
construct, by specifying conditions on some or all of the outgoing
transitions from the connective junction
A self-loop transition back to the source state if none of the outgoing transitions is valid
Variations of a
for loop construct,
by having a self-loop transition from the connective junction back
Transitions from a common source to multiple destinations
Transitions from multiple sources to a common destination
Transitions from a source to a destination based on common events
Note: An event cannot trigger a transition from a connective junction to a destination state.
See Use Connective Junctions to Represent Multiple Paths for a summary of the semantics of connective junctions.
Flow chart notation uses connective junctions to represent common
code structures like
for loops and
without the use of states. And by reducing the number of states in
your Stateflow® charts, flow chart notation produces efficient
simulation and generated code that helps optimize memory use.
Flow chart notation uses combinations of the following:
Transitions to and from connective junctions
Self-loops to connective junctions
Inner transitions to connective junctions
Flow chart notation, states, and state-to-state transitions coexist in the same Stateflow chart. The key to representing flow chart notation is in the labeling of transitions, as shown in the following examples.
A transition from the
Front_desk state to
a connective junction is labeled by the
Transitions from the connective junction to the destination states
are labeled with conditions. If
Front_desk is active
check_in occurs, the transition from
the connective junction occurs first. The transition from the connective
junction to a destination state depends on which of the
is true. If none of the conditions is true, no transition occurs and
The chart uses temporal logic to determine when the input
|If the input equals 1...||A transition occurs from...|
|Before t = 2|
|Between t = 2 and t = 5|
|After t = 5|
This example shows a combination of flow chart notation and
state transition notation. Self-loop transitions to connective junctions
for loop constructs. The chart uses
implicit ordering of outgoing transitions (see Implicit Ordering of Outgoing Transitions).
See For-Loop Construct for information on the semantics of this notation.
This example shows the use of flow chart notation. The chart uses implicit ordering of outgoing transitions (see Implicit Ordering of Outgoing Transitions).
See Flow Chart Notation for information on the semantics of this notation.
This example shows transition segments from a common source to multiple conditional destinations using a connective junction. The chart uses implicit ordering of outgoing transitions (see Implicit Ordering of Outgoing Transitions).
See Transition from a Common Source to Multiple Destinations for information on the semantics of this notation.
This example shows transition segments from multiple sources to a single destination based on the same event using a connective junction.
See Transition from a Source to a Destination Based on a Common Event for information on the semantics of this notation.