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Situation, is the Grafcet term used to designate a set of

A transition-condition (receptivity) is every logical function associated to each

The fundamental elements which constitute Grafcet are:

A predicate is a logical expression with one or more variables.

When a transition is enabled and the associated condition is true, the transition is not cleared.

Several steps can be directly linked to a immediate succeeding transition through:

Grafcet evolution rule number 5 states that, when a step is simultaneously activated and deactivated it remains active!

A Grafcet initial situation is characterized by steps

In Gracet when an action D is defined as D:=1, it means that that action stops being executed when the associated step is deactivated.

The execution time of a continuous action