SCADA (Supervisory Control and Data Acquisition) systems are at the heart of the modern industrial enterprise ranging from mining plants, water and electrical utility installations to oil and gas plants. In a market that is crowded with high-level monographs and reference guides, more practical information for professional engineers is required. This book provides engineers with the knowledge to design their next SCADA system more effectively with a focus on using the latest communications technologies available. It commences with a brief review of the fundamentals of SCADA systems' hardware, software and the communications systems that connect the SCADA Modules together. A solid review is then done on all related protocols.