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The timed variables can be associated to…

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

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

A Grafcet initial situation is characterized by steps

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

Variable Xi represents a Boolean variable such that

A transition-condition is

The steps skip is a particular case of …

A pit step has only a transition immediate preceding.

A transition to be enabled has to have all the immediate preceding steps active