Common Elements

By common elements are intended those elements which are common to all programming languages of the IEC 61131-3 standard.Note: definition and editing of the most part of the common elements (variables, structured elements, function blocks definitions etc.) are managed by GF_ProjectVX code through specific editors, forms and tables. GF_ProjectVX code does not allow for editing directly the source code related to the above mentioned common elements. The following paragraphs are meant as a language specification. To correctly manage common elements refer to the GF_ProjectVX code user guide.