the electrostatic precipitator assignment of the high voltage supply units 2 to the precipitator zones planned and actual emission values of the electrostatic precipitator assignment of planned and actual emission values to precipitator zones of the electrostatic precipitator process values e g temperature and flow volume a current optimization mode of the electrostatic precipitator and or the current operating mode e g start up or optimization of energy consumption in the second area 16 of the object u201c electrostatic precipitator u201d 12 the total power of the electrostatic precipitator and or partial powers of its serial and parallel precipitator zones are represented as characteristic methods which are calculated or determined in the object u201c electrostatic precipitator u201d 12 since the objects 11 12 are set up solely in the server component 3 and are available to all client modules 5 the latter do not require any storage facilities for the objects 11 12 instead the client modules 5 merely have data interfaces for accessing the objects 11 12 or information said objects or information being present solely in the server component 3 the client modules 5 can also create further individual objects wherein these can be derived from the classes of the objects u201c high voltage supply units u201d 11 or the objects u201c electrostatic precipitators u201d 12 alternatively the client.