This library provides some functions to convert Integer values to Strings and Strings to Integer values.

Enter:

apax add @simatic-ax/conversion

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Simatic.Ax.Conversion;
Simatic.Ax.Conversion.Integer;
Simatic.Ax.Conversion.Strings;

NAMESPACE Simatic.Ax.Conversion
    TYPE
        ConversionMode : WORD (
            NONE := WORD#16#0000, 
            FORCE_SIGN := WORD#16#0001
    END_TYPE
END_NAMESPACE

Integer.ToString(value :  SINT, mode : ConversionMode) : STRING[4];
Integer.ToString(value : USINT, mode : ConversionMode) : STRING[4];
Integer.ToString(value :   INT, mode : ConversionMode) : STRING[6];
Integer.ToString(value :  UINT, mode : ConversionMode) : STRING[6];
Integer.ToString(value :  DINT, mode : ConversionMode) : STRING[11];
Integer.ToString(value : UDINT, mode : ConversionMode) : STRING[11];
Integer.ToString(value :  LINT, mode : ConversionMode) : STRING[20];
Integer.ToString(value : ULINT, mode : ConversionMode) : STRING[21];

Strings.ToInt(str : STRING, value =>  SINT) : BOOL;
Strings.ToInt(str : STRING, value =>   INT) : BOOL;
Strings.ToInt(str : STRING, value =>  DINT) : BOOL;
Strings.ToInt(str : STRING, value =>  LINT) : BOOL;
Strings.ToInt(str : STRING, value => USINT) : BOOL;
Strings.ToInt(str : STRING, value =>  UINT) : BOOL;
Strings.ToInt(str : STRING, value => UDINT) : BOOL;

Strings.ToInt(str : STRING, value => ULINT) : BOOL;

Values > MAX ULINT will handled as MOD MAX_ULINT (MAX_ULINT = 18446744073709551615);

This function convert a string containing a hex number into a hex number

Example:

    ret := Strings.ToHex(str := 'a231', n := 4, result => res);  // res = WORD#16#a231

Description: The function ToArray.OfCharCount() converts a string into a array of CHAR

• When the string is longer than the array, then the string will be cut. The function returns the length of the array.
• When the string is shorter then the array. The complete string can be copied to the array. The elements behind will not be touched. The function returns the length of the string
• arrays with other start index than 0 are supported
• only one dimensional arrays are supported

Strings.ToArray.OfCharCount(str : STRING, arr : ARRAY[*] OF CHAR) : DINT;

Strings.ToArray.OfLint(str : STRING, arr : ARRAY[*] of LINT) : BOOL;

Convert a String "[123, 456, 789]" to an ARRAY[*] OF LINT and returns TRUE if the conversion was successful. If the target array arr is to small, the function returns also true but converts not more elements than the size of the destination array. If you want the number of converted elements, then ist the function ToArray.OfLintCount()

Strings.ToArray.OfLintCount(str : STRING, arr : ARRAY[*] of LINT) : DINT;

Convert a String "[123, 456, 789]" to an ARRAY[*] OF LINT and returns the number of converted elements,

when startIdx and endIdx are not used, the whole array until max string length will be copied. Implausible indices will return a empty string. Examples:

• startIdx > endIdx
• startIdx out of the array boundaries startIdx : 1 and Array[5..10]
• endIdx out of the array boundaries endIdx : 15 and Array[0..10]

Thanks for your interest in contributing. Anybody is free to report bugs, unclear documentation, and other problems regarding this repository in the Issues section or, even better, is free to propose any changes to this repository using Merge Requests.

This workspace will be checked by the markdownlint-cli (there is also documented ho to install the tool) tool in the CI workflow automatically.
To avoid, that the CI workflow fails because of the markdown linter, you can check all markdown files locally by running the markdownlint with:

markdownlint **/*.md --fix

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