PLCs & Scada: Theory and Practice
PLCs & Scada: Theory and Practice
Pages: 1047
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Contents:
SECTION 1INTRODUCTORY CONCEPTS
Chapter 1 Introduction to Programmable Controllers
1-1 Definition ……………………………………………………………………………………. 4
1-2 A Historical Background ……………………………………………………………….. 5
1-3 Principles of Operation………………………………………………………………… 10
1-4 PLCs Versus Other Types of Controls …………………………………………… 13
1-5 PLC Product Application Ranges …………………………………………………. 22
1-6 Ladder Diagrams and the PLC ……………………………………………………… 24
1-7 Advantages of PLCs ……………………………………………………………………. 26
Chapter 2 Number Systems and Codes
2-1 Number Systems ………………………………………………………………………… 34
2-2 Number Conversions …………………………………………………………………… 41
2-3 One’s and Two’s Complement ……………………………………………………… 43
2-4 Binary Codes ……………………………………………………………………………… 46
2-5 Register Word Formats ……………………………………………………………….. 50
Chapter 3 Logic Concepts
3-1 The Binary Concept ……………………………………………………………………. 56
3-2 Logic Functions ………………………………………………………………………….. 57
3-3 Principles of Boolean Algebra and Logic ………………………………………. 64
3-4 PLC Circuits and Logic Contact Symbology ………………………………….. 68
SECTION 2COMPONENTS AND SYSTEMS
Chapter 4 Processors, the Power Supply, and Programming Devices
4-1 Introduction ……………………………………………………………………………….. 82
4-2 Processors ………………………………………………………………………………….. 84
4-3 Processor Scan……………………………………………………………………………. 86
4-4 Error Checking and Diagnostics …………………………………………………… 92
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