From OpenSCADAWiki
Each module of the subsystem "Data acquisition" provides the configuration page with the tabs "Controllers" and "Module". The tab "Controllers" (Fig.4.5g) contains the Number field with detailed quantity of the controller objects with the common statistic about ones: running, enabled and in errors per the error codes; also as a list of controller objects, registered in the module. In the context menu of the list user can add, delete and move to the desired controller object. On the tab "Module" there is information on the module of the subsystem "Data acquisition" (Fig.4.1d), which structure is identical for all modules.