Determining the values of GRAFCET variables
Variables of continuously effective actions (allocations) receive the value “1” if the corresponding action is linked to an active step and any action condition present has the value “1”.
Variables of stored effective actions (assignation) are changed if the corresponding action is linked to an active step and the relevant action event occurs (e.g. action on event or on activation).
FluidSIM does not check whether the two types of variable identification contradict each other for a variable. If this case occurs, the variable value is determined by an internal calculation, which the user cannot predict (see example: Grafcet/Grafcet09.ct).
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