We saw the need for an understandable book on Siemens Step 7 programming. We also wanted it to be affordable. We added two additional chapters to the second edition. We wanted the book to be practical, and also have breadth and depth of coverage. There are many practical explanations and examples to illustrate and ease learning. There is a step-by-step chapter on creating a project to ease the learning curve. There is also a chapter that features step-by-step coverage on how to create a working HMI application. The setup and application of Technology Objects for PID and motion control are also covered.The coverage of project organization provides the basis for a good understanding of programming and project organization. Linear and modular programming are covered to provide the basis for an understanding of how an S7 project is organized and how it functions. The book covers ladder logic and Function Block Diagram (FBD) programming. There is In-depth coverage of ladder logic, timers, counters, math, special instructions, function blocks, and technology objects. Wiring and use of I/O modules for various PLC models is covered. Sinking/sourcing, and the wiring of digital and analog modules are covered. There are also practical examples of the use and application of analog modules and their resolution. The book covers various models of Siemens PLCs including S7-300, S7-1200, S7-400, and S7-1500.There are extensive questions and exercises for each chapter to guide and aide learning. The book includes answers to selected chapter questions and programming exercises. The book includes a link to download a trial version of Siemens Step 7 (TIA Portal) software. This is the black and white version of the book.