Overview of industrial process automation Man made or industrial processes localised or geographically distributed need be automated in order to ensure they produce quality consistent and cost effective goods or services. Automation systems for these processes broadly consist of instrumentation control human interface and communication subsystems. This book introduces the basics of philosophy technology terminology and practices of modern automation systems with simple illustrations and examples. Provides an introduction to automation Explains the concepts through simple illustrations and examples Describes how to understand technical documents Why automation Automation system structure Instrumentation subsystem Control subsystem Human interface subsystem Automation strategies Programmable control subsystem Hardware structure of controller Software structure of controller Programming of controller Advanced human interface Types of automation systems Special purpose controllers System availability Common configurations Advanced Input Output system Concluding remarks Appendixes