The fast pace of the advancement of the technologies involved in the modern Distributed Control Systems demands from the control and instrumentation professionals and process engineers to be proficient in the highly complex and fast-moving areas of computer hardware and software, and to cope with the developments in their own field. This book is intended to be an up-to-date reference source for professionals or textbook for graduate and postgraduate students. It provides information to assist the designers, users and maintenance staff of DCS in understanding how these systems function, and addresses important issues in the design, implementation, and operation of DCS systems. The book updates the readers on the recent technological developments, future directions, and the recently established standards related to the engineering and operations of DCS.