→Step

according to →IEC-standard: situation in which the behavior of a →program organization unit with respect to its inputs and outputs follows a set of rules defined by the associated →actions of the step

The initial step is a special type of step: The initial step is the step within the SFC network that is active when the evaluation starts.

logi.CAD 3 supports the usage of steps within these editors:

editor

details under

ST-editor

"Steps in ST" and "Initial step in ST"

FBD-editor

"Initial steps and steps in FBD"