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 be determined. In the SFC editor, the ‎SFCErrorAnalyzation‎ and ‎SFCErrorAnalyzationTable‎ ⮫ flags use these functions implicitly to examine the transition expressions. Then the flags provide the identifiers of the variables that contributed to a timeout error. They keep this information until they are reset explicitly by means of the SFC flag ‎SFCQuitError‎.

An analysis POU cannot be called by means of a pointer. This kind of call is ignored. Call the POU as a single instance.

For a description of the library POUs and an example of how the SFC flags display the analysis results in CODESYS, see the documentation for the library (online help or directly in the Library Manager).

To apply the library in an SFC chart,see also: ⮫ “Programming in SFC ”, ⮫ “Creating a POU in SFC ”, ⮫ “Adding a step-transition ”, ⮫ “Adding an entry action ”, ⮫ “Adding an exit action ”, ⮫ “Adding an action ”, ⮫ “Adding an alternative branch ”, ⮫ “Adding a jump ”, ⮫ “Adding a macro ”, ⮫ “Adding an association ”