Programmable Controllers (eBook)

An Engineer's Guide

E. A. Parr (Autor)

eBook Download: PDF

2003 | 3. Auflage
448 Seiten
Elsevier Science (Verlag)
978-0-08-053990-4 (ISBN)

Infos

Andrew Parr's Programmable Controllers provides a thoroughly practical introduction to the use of PLCs in industry, covering programming techniques alongside systems-level design issues. In the third edition a masterclass series of real-world case studies have been added to illustrate typical engineering challenges - and model solutions.

New material also includes the new IEC-61508 functional safety standard, use of Windows-based software on programming terminals, an expanded section on Scada, and extended coverage of networks and fieldbus.

Andrew Parr works at ASW Sheerness Steel where the plant control is based on approximately sixty programmable controllers.

* The practical guide to PLC applications for engineers and technicians
* Systems-level design and control covered alongside programming techniques
* Coverage matched to introductory college programs

Inhalt

Cover 1
Programmable Controllers: An Engineer's Guide 4
Copyright Page 5
Contents 6
Preface 12
Chapter 1. Computers and industrial control 14
1.1 Introduction 14
1.2 Types of control strategies 14
1.3 Enter the computer 19
1.4 Input/output connections 34
1.5 Remote I/O 42
1.6 The advantages of PLC control 44
Chapter 2. Programming techniques 46
2.1 Introduction 46
2.2 The program scan 49
2.3 Identification of input/output and bit addresses 53
2.4 Programming methods 61
2.5 Bit storage 71
2.6 Timers 76
2.7 Counters 80
2.8 Numerical applications 85
2.9 Combinational and event-driven logic 94
2.10 Micro PLCs 108
2.11 IEC 1131-3, towards a common standard 112
2.12 Programming software 118
2.13 Programming software tools 122
Chapter 3. Programming style 128
3.1 Introduction 128
3.2 Software engineering 129
3.3 Top-down design 131
3.4 Program structure in various PLCs 132
3.5 Housekeeping and good software practice 141
3.6 Speeding up the PLC scan time 148
Chapter 4. Analog signals, closed loop control and intelligent modules 153
4.1 Introduction 153
4.2 Common analog signals 153
4.3 Signals and standards 162
4.4 Analog interfacing 164
4.5 Analog output signals 173
4.6 Analog-related program functions 176
4.7 Closed loop control 177
4.8 Specialist control processors 185
4.9 Bar codes 186
4.10 High-speed counters 191
4.11 Intelligent modules 191
4.12 Installation notes 192
Chapter 5. Distributed systems 195
5.1 Parallel and serial communications 195
5.2 Serial standards 198
5.3 Area networks 218
5.4 The ISO/OSI model 225
5.5 Proprietary systems 227
5.6 Safety and practical considerations 237
5.7 Fibre optics 240
Chapter 6. The man–machine interface 245
6.1 Introduction 245
6.2 Simple digital control and indicators 247
6.3 Numerical outputs and inputs 249
6.4 Alarm annunciation 255
6.5 Analog indication 260
6.6 Computer graphics 263
6.7 Message displays 284
6.8 SCADA packages 284
Chapter 7. Industrial control with conventional computers 289
7.1 Introduction 289
7.2 Bus-based machines 290
7.3 Programming for real time control 298
7.4 Soft PLCs 305
Chapter 8. Practical aspects 306
8.1 Introduction 306
8.2 Safety 306
8.3 Design criteria 333
8.4 Constructional notes 335
8.5 Maintenance and fault finding 344
8.6 Electromagnetic compatibility (EMC) and CE marking 367
8.7 Other programmable devices 372
Chapter 9. Sample ladder logic 375
9.1 Introduction 375
9.2 One Shot 377
9.3 Toggle action 378
9.4 Alarm annunciator 381
9.5 First order filter 383
9.6 Level control 386
9.7 Linearization 393
9.8 How totalization 398
9.9 Scaling 404
9.10 Gray code conversion 407
9.11 BCD to Binary conversion 411
9.12 Binary to BCD conversion 413
9.13 A hydraulic system 416
Appendix: Number systems 429
Index 434

Produkt-Details

• Erscheint lt. Verlag: 12.8.2003
• Sprache: englisch
• Themenwelt: Mathematik / Informatik ► Informatik ► Theorie / Studium
• Themenwelt: Naturwissenschaften ► Chemie
• Themenwelt: Technik ► Elektrotechnik / Energietechnik
• ISBN-10: 0-08-053990-4 / 0080539904
• ISBN-13: 978-0-08-053990-4 / 9780080539904