Lenze PLC Designer PLC Designer (R2-x) Instrukcja Użytkownika Pobierz pdf (Strona 677)

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L-force | PLC Designer

PLC Designer Libraries

 DMS 3.2 EN 02/2011 TD29 675

19.3 AnalyzationNew.lib library

19.3.1 Analysis of expressions with the AnalyzationNew.lib library

This library provides modules for the analysis of expressions. If a composed expression

is FALSE, those of its components can be evaluated which are adding to this result. In

the SFC-Editor the flag SFCErrorAnalyzationTable uses this function implicitely for the

analysis of expressions in transitions.

Example of an expression:

b OR NOT(y < x) OR NOT (NOT d AND e)

The functions:

The following variables are used by all modules:

• InputExpr: BOOL, expression to be analysed

• DoAnalyze: BOOL, TRUE starts analysis

• ExpResult: BOOL, current value of the expression

Different is the output of the result of the analyzation:

• AnalyzeExpression returns in a string the components of the expression, which are

adding to the total value FALSE. Function AppendErrorString is used for this

purpose, separating the particular components in the output string by "|"

characters.

OutString: STRING, Result of the analysis, Sequence of the concerned components

of the expression (e.g. y < x | d)

• AnalyseExpressionTable writes the components of the expression, which are

adding to the total value FALSE, to an array. For each component the following

information is provided by structure ExpressionResult: name, address, comment,

(current)value.

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