Object ‘GVL’ - Global Variable List

Symbol:

A global variable list is used for the declaration, editing and display of global variables.

A GVL is added to the application or the project with the command Project ‣ Add object ‣ Global Variable List.

If you insert a GVL under an application in the Device tree, the variables are valid within this application. If you add a GVL in the POUs view, the variables are valid for the entire project.

You can make settings for the editor of the object in the dialog box Tools ‣ Options in the categories Declaration editor and Text editor.

If the target system supports network functionality, you can convert the variables of a GVL into network variables and thus use them for data exchange with other devices in the network. To do this you must define corresponding properties for the GVL in the dialog box Properties, on the tab Network properties.

See also

• Programming of Applications
• Remanent Variables - RETAIN, PERSISTENT
• Dialog Box ‘Properties- Network properties’