Discrete control used to be considered the opposite of process control, but now the merging of industry needs and the merging of technologies has made the distinction between the two types of control less clear. In fact, it would have made sense to combine the continuous and discrete categories of this book into a single Basic Control category. However the literature is still fairly separate, and this separate categorization still seemed best.
Some of the sensors included in the topic on Discrete Input and Output Devices and General Manufacturing Measurements are continuous, which further confuses the distinction. As with process instrumentation, this topic only scratches the surface of the available types. The topics on Motor and Drive Control and on Motion Control are not “discrete” either, but they fit with PLCs and manufacturing control. Variable Speed Drives are also used in process control.
Motion control is an unknown area to many who work in other areas of automation. However, the tremendous increase in automated equipment is rapidly increasing the range of applications of motion controllers.
A Guide to the Automation Body of Knowledge, 2nd Edition Vernon L. Trevathan, Editor This 2nd edition gives you comprehensive information about all major topics in the broad field of automation. Edited by Vernon Trevathan with contributions from over 30 leading experts from all aspects of automation, this book defines the most important automation concepts and processes. You will turn to this book again and again as the ultimate source on what is encompassed by automation.
Format: Hardbound Book – 2006 ISBN: 978-1-55617-984-6 Length: 506 pages; Weight: 3 lbs. Member: $109.00; List: $129.00 www.isa.org/autobok
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