Sfc Display Operation - ABB 800xA Operation

SFC Display Operation

Figure 37. SFC Display with Expanded Step
Transitions are shown beneath the activities and conditions window for a step. There
are two types of transition windows. If a transition contains a GOTO which
addresses the next step in the TCL sequence, it is displayed with the step number
and step text beneath the tic mark on the main program flow line. Transitions which
refer to other steps or which do not have GOTO actions are displayed in the
expanded step area. If a GOTO is present, the step number is displayed on a button
following the transition tic mark. Use the horizontal scroll bar to see additional
transitions, if necessary.
Activities and conditions can have both load text and runtime text. The load text is
displayed when the sequence is first loaded. It is replaced by runtime text as that
part of the sequence is executed. Load text describes what should happen during
execution of the sequence; runtime text describes what actually happens. Transitions
only have load text. Each transition has two load texts (one for each button).
SFC Display Operation
Activities
Step activities specify the actions that will be performed in each program step.
Activities are highlighted to illustrate the degree of execution of the program (the
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Section 4 TCL Displays
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