"Normal" step

A step becomes active, when the upstream transition is satisfied, and is normally inactive when the downstream is satisfied.

Zero or more actions belong to every step. Steps without action are known as waiting steps.

See also section Step in the Reference manual.

Edit > New > Step

or

Step menu command from the shortcut menu

F3

Initial Step

The initial status of a sequence is characterized by the initial step, which is active when initializing the project containing the SFC section. Initial steps are not usually assigned an action. With single token (conforming to IEC 61131-3), only one initial step is permitted per sequence.

With multi token, any number (0 up to all steps in the string) of initial steps are possible.

See also section Step in the Reference manual.

Edit > New > Step

or

Step menu command from the shortcut menu

F3

Macro Step

Macro steps are used to call macro sections and therefore the hierarchical structure of sequence control.

Macro sections calls are expansions to IEC 61131-3 and must be explicitly enabled via the Tools > Project Settings dialog box, in the Language extensions tab by activating the Allow macro sections check box.

See also section Macro steps and macro sections in the Reference manual.

Edit > New > Macro Step

or

Macro Step menu command from the shortcut menu

Ctrl+F3

InStep

Every macro section begins with an InStep.

InSteps are created automatically in macro sections by the SFC editor and cannot be deleted, copied or inserted manually.

See also section InStep in the Reference manual.

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OutStep

Every macro section ends with an OutStep.

OutSteps are created automatically in macro sections by the SFC editor and cannot be deleted, copied or inserted manually.

See also section OutStep in the Reference manual.

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