Initial Step

The initial state of the POU is represented by the initial values of its internal and output variables, and by its set of initial steps, i.e., the steps which are initially active. Each SFC network, or its textual equivalent, has exactly one initial step. An initial step can be drawn graphically with double lines for the borders, as shown below. For system initialization, the default initial state is FALSE for ordinary steps and TRUE for initial steps.GF_ProjectVX code cannot compile an SFC network not containing exactly one initial step.

Representation	Description
	Initial step(graphical representation with direct links)