‎SFCInit‎

‎BOOL‎

‎TRUE‎: CODESYS resets the sequence to the initial step. The other SFC flags are also reset (initialization). While the variable is ‎TRUE‎, the initial step remains set (active), but its actions are not executed. Only when you set ‎SFCInit‎ again to ‎FALSE‎ is the POU further processed normally.

‎SFCReset‎

‎BOOL‎

Behaves similar to ‎SFCInit‎

However, CODESYS continues processing after the initialization of the initial step. For example, in the initial step, you could immediately reset the ‎SFCReset‎ flag to ‎FALSE‎.

‎SFCError‎

‎BOOL‎

‎TRUE‎ if a timeout occurs in an SFC chart. If second timeout occurs in the program, it is not registered unless you previously reset the variable ‎SFCError‎. The declaration of ‎SFCError‎ is a requirement for other flag variables to function for controlling the chronological sequence (“SFCErrorStep”, ‎SFCErrorPOU‎, ‎SFCQuitError‎).

‎SFCEnableLimit‎

‎BOOL‎

Used specifically for activating (‎TRUE‎) and deactivating (‎FALSE‎) the timeout control in steps using ‎SFCError‎

If you declare and activate this variable (SFC settings), then you must set it to ‎TRUE‎ for ‎SFCError‎ to work. If you do not, then the timeouts are ignored. The is useful, for example, at start-up or in manual operation. If you do not declare the variable, then ‎SFCError‎ will work automatically.

The requirement is the declaration of ‎SFCError‎.

‎SFCErrorStep‎

‎STRING‎

Stores the name of the step that caused a timeout, which was registered by ‎SFCError‎

The name is kept until the registered step error is reset by means of ‎SFCQuitError‎ (FALSE -> TRUE).

The requirement is the declaration of ‎SFCError‎.

‎SFCErrorPOU‎

‎STRING‎

Stores the name of the block in which a timeout occurred and was registered by ‎SFCError‎. The name is saved until the timeout is reset by ‎SFCQuitError‎.

The requirement is the declaration of ‎SFCError‎.

‎SFCQuitError‎

‎BOOL‎

As long as this Boolean variable is ‎TRUE‎, CODESYS pauses the processing of the SFC chart and any timeout, saved in the variable ‎SFCError‎, is reset. If you reset the variable to ‎FALSE‎, then all previous times in the active steps are reset.

The requirement is the declaration of ‎SFCError‎.

‎SFCPause‎

‎BOOL‎

As long as this variable is ‎TRUE‎, CODESYS pauses the processing of the SFC chart.

‎SFCTrans‎

‎BOOL‎

‎TRUE‎ when a transition is active

‎SFCCurrentStep‎

‎STRING‎

Shows the name of the active step, regardless of the time monitoring

In parallel branches, the name of the step of the rightmost branch line is always stored.

‎SFCTip‎,

‎SFCTipMode‎

‎BOOL‎

Controls the "jogging mode" of the SFC block

If you enable this flag with ‎SFCTipMode=TRUE‎, then you can activate the next step only by setting ‎SFCTip‎ to ‎TRUE‎. While ‎SFCTipMode‎ is set to ‎FALSE‎, transitions can also be used to continue activation.

‎SFCErrorAnalyzation‎,

Contains as string all variables that contribute to the total value ‎TRUE‎ of ‎SFCError‎ (timeout in one step)

‎SFCError‎ needs to be activated for this.

‎SFCErrorAnalyzation‎ implicitly uses the function of the POU ‎AnalyzeExpression‎ of the ‎Analyzation‎ library.

‎SFCErrorAnalyzationTable‎,

Contains in a table all variables that contribute to the total value ‎TRUE‎ of ‎SFCError‎ (timeout in one step)

‎SFCError‎ needs to be activated for this.

‎SFCErrorAnalyzationTable‎ implicitly uses the function of the POU ‎AnaylzeExpressionTable‎ of the ‎Analyzation‎ library.