This book presents a comprehensive description of the configuration of devices and network for the S7-400 components inside the engineering framework TIA Portal. You learn how to formulate and test a control program with the programming languages LAD, FBD, STL, and SCL. The book is rounded off by configuring the distributed I/O with PROFIBUS DP and PROFINET IO using SIMATIC S7-400 and data exchange via Industrial Ethernet. SIMATIC is the globally established automation system for implementing industrial controllers for machines, production plants and processes. SIMATIC S7-400 is the most powerful automation system within SIMATIC. This process controller is ideal for data-intensive tasks that are especially typical for the process industry. With superb communication capability and integrated interfaces it is optimized for larger tasks such as the coordination of entire systems. Open-loop and closed-loop control tasks are formulated with the STEP 7 Professional V11 engineering software in the field-proven programming languages Ladder Diagram (LAD), Function Block Diagram (FBD), Statement List (STL), and Structured Control Language (SCL). 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. Users of STEP 7 Professional V12 will easily get along with the descriptions based on the V11. With start of V12, the screens of the technology functions might differ slightly from the V11.