Qualifiers for Actions in SFC You assign qualifiers to IEC steps. Qualifiers describe how a step action is processed. Qualifiers are processed by the SFCActionControl function block in the library Iec
SFC flags SFC flags are implicitly generated variables with predefined names. You can use flags to influence the processing of an SFC chart. You can use these flags, for example, to display timeouts o
Implicit Variables Every SFC object supplies implicit variables for you to monitor the status of steps and IEC actions at runtime. These implicit variables are automatically declared for each step and
Library: Analyzation This library contains POUs for the analysis of expressions. When a composite expression has the total value of FALSE , those of its components that contribute to this result can b
Reference: User Interface :
Dialog: Project Settings – SFC Symbol: Function : The dialog is used to configure the settings of SFC objects. The properties of each new SFC object automatically have the configured settings. Call :
Dialog: Options – SFC editor Symbol: Function : The dialog is used to configure the settings for the SFC editor . Call : Tools → Options command, SFC editor category Tab: Layout Table 5 . Elements Def
Dialog: Settings – SFC Settings Function : The dialog defines the default settings for all POUs which are used in the project and which are programmed in SFC. Call : View → Properties command; context
