Abstract: A control system (100) for a device (105) for making possible a process control for a process carried out on the device, with a reception module (110) and with a processing module (120). The reception module is configured to receive process information (112). The process information pertains to currently carried out process steps (114) of the process. The processing module is configured to assign a sequence number (122) to the received process information and to generate a visible protocol signature (128) based on the sequence number, of the process information, of time information (124) and a secret system code (126) and to assign it to the process information, and to output the process information with the assigned visible protocol signature. The secret system code is stored n this case exclusively in an internal memory (125) of the control system.