A method for operating an automation system which executes, as an automation solution, a control program having a plurality of software modules, where the method comprises replacing at least one software module comprising an old software module at the runtime of the control program with a new software module wherein the new software module is loaded into a memory of the automation system, an old data area associated with the old software module is compared with a new data area associated with the new software module, program code instructions for converting data for or from the old data area into data for or from the new data area is generated, and a program code instruction for invoking the old software module is replaced with program code instructions for invoking the generated program code instructions for data conversion and for invoking the new software module.