Category SFC
![]() | Scope of PLC project properties Note that the scope differs between different project properties! |
The category SFC is used to configure the settings for SFC objects. Each new SFC object automatically has the configured settings in its properties.
Flags tab

Implicitly generated variables (flags) for controlling and monitoring the processing in an SFC diagram. | |
Use |
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Declare |
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![]() | An automatically declared flag variable appears in the declaration part of the SFC editor, but only in online mode. |
Build tab

Code generation
Calculate active transitions only |
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See also:

: The corresponding variable is used.
(default): TwinCAT only generates code for transitions that are currently active. This setting can significantly reduce the runtime of the SFC diagram compared to the deactivated option.
: TwinCAT generates code for all transitions. The states of all transitions are displayed online in color (True in dark blue, False in light blue).