Abstract:
A key component of contemporary production and process control, industrial automation allows for increased safety, efficiency, and productivity. Programmable logic controllers, or PLCs, are at the heart of this development since they form the basis for automating intricate industrial procedures. The design concepts, programming techniques, and applications of PLCs in various sectors are thoroughly examined in this thesis. An outline of PLC development is given at the outset of the research, along with information on their architecture and essential parts, including CPUs, I/O modules, communication interfaces, and power supply. Numerous programming paradigms are covered in detail, with a focus on their useful application in actual situations. These paradigms include Ladder Logic, Structured Text, Function Block Diagrams, and Sequential Function Charts. To guarantee PLC-based systems' scalability, modularity, and dependability, best practices and sophisticated programming tools are also emphasized. Applications in manufacturing, process industries, utilities, and infrastructure are thoroughly examined, demonstrating how PLCs spur innovation in fields including chemical processing, transportation systems, smart grids, and robotics integration.
