You can display your project in different languages when you create and link localization files. The localization files correspond to those of the ‎GNU gettext‎ system. The format of the localization template files is *.pot (Portable Object Template), from which localization files ‎*.po‎ (Portable Object) are generated after translation.

You configure which categories of text information are localized in the project. Then you export these texts into a translation template. This template is a file in pot format (example: ‎project_1.pot‎). You produce localization files in the format ‎*.po‎ (examples: ‎de.po, en.po, es.po‎), either automatically with a corresponding external translation tool or manually with a neutral text editor. You can import the *.po files back into CODESYS and use them for localization.

The commands for using project localization are located in the “Project” → “Project Localization” menu.