Totally Integrated Automation is the concept according to which SIMATIC controls machines, manufacturing systems and processes. For the example of the S7-300/400 programmable controller the reader is given an overview of the functioning and design of a modern automation system. The book also provides an insight into configuring and parameterization of the controller and the distributed I/O, explains network communication and describes the possible methods of operating and monitoring a system. As the central automation tool, STEP 7 manages all the relevant tasks and at the same time integrates a number of text and graphics-oriented PLC programming languages. The readers can discover for themselves on reading the book which languages are offered and how these differ from each other.