A control system for a technical plant includes an operator station server and one operator station client, wherein a data model is implemented on the operator station server and the operator station client has display and control units, where the operator station server transmits visualization information representing the data model to the display unit that generates a graphical presentation of the received visualization information for an operator of the control system, receives commands relating to the data model from the operator and forwards them to the control unit, and where the control unit receives the commands, generates revised visualization information and transmits this information directly to the display unit to adjust the graphical presentation of the display unit, generates adjustment commands from the received commands and transmits them directly to the data model on the operator station server to adjust the data model in response to the operator commands.