All programmable logic controllers (PLC) of the model series Jazz, M91, Samba, Vision and UniStream follow the principle of PLC and HMI in one unit: all-in-one. Depending on the model, the displays vary from 2-line text displays in black/white to graphics-enabled 15" colour displays with a touch function. The programming environment and a comprehensive range of software tools are included in the scope of delivery of all controllers. Depending on the scope of tasks, they act as multifunction controllers in the process.