SIMATIC S7-300 has been specially designed for innovative system solutions in the manufacturing industry, and with a diverse range of controllers it offers the optimal solution for applications in centralized and distributed configurations. Alongside standard automation safety technology and motion control can also be integrated. The TIA Portal user interface is tuned to intuitive operation and encompasses all the requirements of automation within its range of functions: from configuring the controller, through programming in the different languages, all the way to the program test and simulation. For beginners engineering is easy to learn and for professionals it is fast and efficient. This book describes the configuration of devices and network for the S7-300 components inside the new engineering framework TIA Portal. With STEP 7 Professional V12, configuring and programming of all SIMATIC controllers will be possible in a simple and efficient way; in addition to various technology functions the block library also contains a PID control. As reader of the book you learn how a control program is formulated and tested with the programming languages LAD, FBD, STL and SCL. Descriptions of configuring the distributed I/O with PROFIBUS DP and PROFINET IO using SIMATIC S7-300 and exchanging data via Industrial Ethernet round out the book.