Siemens SIMATIC PCS 7 Programming And Operating Manual page 73

The background color such as "light green" in a row indicates that a technological action is
configured. The color for technological objects can be set in the CFC editor.
"Initialization", "Processing", "Termination" tabs
This tab shows the configured assignments for the individual actions of the step.
An "f(x)" button can be displayed optionally in a line of an assignment:
● The "f(x)" button is only visible when a calculation is configured for the right address of a
line.
● The "f(x)" button opens the "Calculation for SFC" dialog. The current values of the
calculation results and the output variables are displayed in the dialog. The structure is
similar to the test mode of the dialog box in SFC, but none of the fields can be edited like
in test mode.
Operator Inputs in the "Properties" Dialog Box for the Step
The following operator inputs are possible in the dialog box:
● Closing the dialog box using the "Close" button
● Acknowledging a step error with the "S" button
● Selecting the previous or next active step with the "S <-" / "-> S" buttons
● Displaying the properties of the successor transition with the "Transition >>" button
● Option: Set
If you set the "Target step" option, the current step is selected as the target step. The
selection is made to the left of the step. You can only set the target step in sequencers that
are not "Active". This means the following:
– The next time you start, the inactive sequencer starts at the selected target step instead
– The next time you press the "Resume" button, the "held" sequencer resumes at the
The target step remains selected until the next time you start or resume.
The selection is cleared if you restart the CPU or change from "MANUAL" to "AUTO"
operating mode.
Note
You can select multiple steps as the target step (in simultaneous sequencers, for example).
You are responsible for selecting a suitable target step. Blockades or endless loops in the
execution prevent efficient processing.
If you use "programmed target steps", the target steps specified by the operator are deleted
in the respective sequencers.
● Option: "Update"
● Option: "f(x)" button for the right address as described above.
● Option: "Action (technology)" button as described above.
SFC Visualization (V9.0)
Programming and Operating Manual, 05/2017, A5E41356392-AA
/ reset "Target step"
of the initial step.
target step after the interrupted steps have been processed properly.
set /
6.28 "Properties" Dialog Box for the Step
reset. This switches automatic tracing on or off.
Operating and monitoring SFCs
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