PLC Programming and Application

Author: Miao Changchu
Publisher:
Publish Date: 2002-09-01
Features: The first five chapters of this book are the foundational part, where chapters 3 to 5 introduce instructions related to digital control replacing relay control and the design methods of ladder diagrams. The focus is on the design method of right-sequence ladder diagrams, enabling readers to easily master a systematic advanced programming approach and skillfully design ladder diagrams for complex digital control systems, including those with multiple operating modes. Self-learners can start by studying one of the three design methods introduced in sections 5.1–5.3, and those with the opportunity can conduct hands-on experiments while learning. Chapter 6 covers function instructions, subroutines, and interrupt programs of the S7-200. Chapter 7 introduces communication methods of PLCs and the design methods of communication programs. Chapter 8 discusses the design and debugging steps of PLC control systems, measures to improve the reliability of PLC control systems, methods to save PLC input/output points, and the application of PLCs in closed-loop control.