SFC Editor in Online Mode In the SFC editor, the variables and expressions in use on the controller can be displayed at runtime. You can also write and force variables and expressions. Debugging funct
SFC Elements: Step and Transition Symbol: Step Symbol: Transition As a rule, CODESYS inserts steps and transitions as a combination . Inserting a step without a transition or a transition without a st
SFC Element: Action Symbol: An action includes one or more statements in one of the valid implementation languages. You can assign an action to a Step and Transition . Actions that you use in SFC step
SFC Element: Branch Symbol: You use branches to program parallel or alternative sequences in the sequential function chart. In the case of alternative branches, CODESYS processes just one of the branc
SFC Element: Jump Symbol: A jump defines which step should be executed next as soon as the transition preceding the jump is TRUE . Jumps may become necessary, as execution paths cannot cross or lead u
SFC Element: Macro Symbol: A macro contains a part of the SFC chart which is not shown in detail in the main view of the editor. Using macros does not influence the processing flow. Macros are used to
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
