Automation is the sole and unique phrase that is being added to this Modern Industrial World, and process industries in particular have quickly adopted the term Industrial Automation. The main elements of industrial automation include PLCs (Programmable Logic Controllers), HMIs, SCADAs, VFDs, and servos. This book has been written to disseminate all of the information about PLCs, HMI, SCADA, VFDs, and SERVOs. It is divided into 24 chapters, with the first one explaining automation, the second providing a briefing on various controllers, and chapters 3 through 19 detailing PLCs, which cover classification, inputs/outputs, languages, logic gates, programming concepts, timing, counters, analogue programming, memory registers, and a variety of PLC instructions as well as PID controller, industrial protocols, redundancy and fail-safe wiring, servo motors, among other topics. HMI is discussed in full in Chapter 20. Chapter 21 represents SCADA, Chapters 22 & 23- MOTOR, Motor Starters and the last Chapter 24 is about Electrical Drives. This book will find the acceptance among the Engineering Students and Professional Engineers working in the Industry, where they can use it as a guide. It will play a key role, for those who wish to learn about the Automation, as it serves the purpose of SELF-LEARNING.