Computers in Process Control

Table of Contents

Chapter 1: History and Overview

Topics: SCADA; Microprocessor-based instruments; Distributed control; Personal computers; PLCs; Artificial intelligence; Expert systems; Fuzzy logic; Integrated control systems

Learning Objectives:

• Discuss the history of the application of computers to continuous and batch process control.
• Describe the function of an RTU in a SCADA system.
• Describe the development of distributed control systems from microprocessor-based instruments, including programmable logic controllers.
• Compare the hardware, operating systems, software, and applications of a PC with a household VCR.
• Compare the concepts of artificial intelligence, expert systems, and fuzzy and crisp logic.

Chapter 2: Small Computers in Process Control

Topics: Smart sensors, transmitters, signal conditioners, and final elements; Single and multiloop controllers; Networks; PLCs

Learning Objectives:

• Describe the various kinds of small computers used in process control.
• Explain how a "smart" device differs from its conventional counterpart.
• Discuss the similarities between microprocessor-based instruments and conventional instruments and list several advantages of microprocessor-based instruments.
• Describe the roles of two kinds of PCs (programmable controllers and personal computers) in process control.

Chapter 3: DCS Architecture

Topics: Distributed control system hardware and software; Workstations; Remote processing units; Host/guest computers; Transmission systems; What is Fieldbus?

Learning Objectives:

• Describe the elements of a typical workstation.
• Discuss the functions of remote processing units and host/guest computers in DCSs.
• Compare star, hub, and ring network topologies and token-passing, contention, and polling protocols.
• Explain why today's DCS users must be more computer literate than previously.
• Discuss ways of calculating and ensuring DCS reliability.
• Describe the functions of six typical DCS peripherals.
• List advantages and disadvantages of all-digital process control systems, such as fieldbus.

Chapter 4: DCS Configuration and Operation

Topics: Configuring distributed control systems; Hierarchical displays; Configuring operating and auxiliary displays; Operation

Learning Objectives:

• Describe the basics of a simple configuration process.
• Discuss the preparatory steps required for configuration.
• Describe a typical hierarchical display arrangement and discuss the progression of the configuration process from level to level.
• Discuss the automatic configuration of auxiliary displays.
• Discuss the DCS functions for which the operator is and is not responsible.

Chapter 5: Systems and Application Integration

Topics: Total business operation; Discrete processes and manufacturing systems; Flexible manufacturing; Materials control; Statistical process control�

Learning Objectives:

• Discuss the development of integration in industry.
• Describe how continuous and discrete processes fit into the concept of total business integration.
• Describe the purposes of MAP and OSI.
• Discuss the functions of CAD, CADD, CAE, CAM, and cell control in discrete processes.
• Discuss the importance of FMS, MRP, JIT, and MMS in today's integrated industrial plant.
• Explain how SPC ensures quality control in open-loop processes.
• Discuss the advantages of integrating batch, continuous, and discrete processes throughout a plant.

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