Introduction to Programmable Logic Controllers,9781401884260

Introduction to Programmable Logic Controllers

by
Edition: 3rd
ISBN13: 9781401884260
ISBN10: 1401884261
Format: Paperback
Pub. Date: 2005-12-16
Publisher(s): Cengage Learning
List Price: $104.94

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Summary

Updated to reflect recent industry developments, this edition features practical information on Rockwell Automation's SLC 500 family of PLCs and includes a no-nonsense introduction to RSLogix software and the new ControlLogix PLC. To assist readers in understanding key concepts, the art program has been modernized to include improved illustrations, current manufacturer-specific photos, and actual RSLogix software screens to visibly illustrate essential principles of PLC operation. New material has been added on ControlNet and DeviceNet, and a new chapter on program flow instructions includes updated references to the SLC 500, MicroLogix, and the PLC 5.

Table of Contents

Preface ix
Acknowledgments xi
Part I Introduction to PLCs
Welcome to the World of Programmable Logic Controllers
3(28)
What Is a PLC?
4(1)
Where Did the PLC Come From?
5(1)
Why Use a PLC?
6(2)
What Makes a PLC Work?
8(1)
How Do PLCs Know What They Are Supposed to Do?
8(1)
How Do Instructions Get Into the PLC's Memory?
9(2)
Innovations Incorporated Into the Programmable Controller
11(6)
Introduction to Fixed and Modular PLC Hardware
17(7)
The Central Processing Unit
24(7)
Micro Programmable Logic Controllers
31(28)
Overview of Selected Micro PLCs
33(1)
GE Fanuc Automation Versamax Controllers
33(3)
GE Fanuc Automation Series 90 Micro PLC
36(4)
The Mitsubishi FX2N Super Micro
40(4)
Omron's CPM1A Series Micro PLCs
44(2)
Rockwell Automation's MicroLogix 1000 Microcontroller
46(1)
Rockwell Automation's MicroLogix 1500 Microcontroller
47(5)
Siemens Simatic S7-200 Micro PLC
52(7)
Programming a Programmable Controller
59(42)
Handheld Programming Terminals
60(5)
Desktop Personal Computers (PCs) and PLC Programming
65(5)
Notebook Personal Computers and PLC Programming
70(3)
Windows CE-Based Handheld Personal Computers
73(1)
Industrial Computers
74(6)
Industrial Monitors
80(1)
Open PLC Systems
80(1)
The IEC 1131-3 Programming Standard
81(13)
Soft PLC or Open-Architecture Control
94(1)
One Step Further: Production Data from PLC to Office Databases
95(6)
Number Systems
101(28)
Number System Characteristics
102(1)
The Decimal Number System
103(1)
Decimal Place Values
104(1)
Binary and Binary-Coded Decimal Numbers
105(11)
The Octal Number System
116(2)
Valid Octal Numbers
118(1)
Octal-to-Decimal Conversion
118(1)
Binary-to-Octal Conversion
118(2)
Octal-to-Binary Conversion
120(1)
The Hexadecimal Number System
121(8)
Introduction to Digital and Analog PLC Interface
129(40)
The Digital Concept
131(1)
Binary Data Representation
132(2)
Correlation of 16-Bit Words to Input Signals
134(3)
The Input Status File
137(1)
The Output Status File
138(3)
Input and Output Status Files and Fixed PLCs
141(3)
Sixteen-Point I/O Modules with Decimal Addressing
144(2)
I/O Interaction with the Input and Output Status Files
146(3)
Fixed PLC I/O Addressing When I/O Is Expanded
149(1)
Thirty-Two-Bit ControlLogix PLC
150(1)
Analog I/O Interface to the PLC
151(10)
The ControlLogix PLC and Analog
161(8)
Introduction to Logic
169(30)
Conventional Ladders Versus PLC Ladder Logic
170(2)
What Is Logic?
172(1)
Overview of Logic Functions
173(1)
Series---The AND Logic Function
174(3)
Three-Input AND Logic
177(1)
Function Block Diagram AND Logic
178(2)
Parallel Circuits---The OR Logic Function
180(3)
NOT Logic
183(1)
Analysis of Rung #1
184(1)
Analysis of Rung #2
184(1)
Parallel NOT Logic
185(2)
Exclusive OR Logic
187(1)
Analysis of Exclusive OR Logic
188(1)
Combinational Logic
189(1)
Priority of Logic Elements
190(3)
Function Block Order of Execution
193(6)
Input Modules
199(38)
Input Modules
200(2)
Discrete Input Module
202(1)
Discrete AC Input Module
202(3)
AC Input Module Specifications
205(6)
DC Input Modules
211(1)
Sinking and Sourcing
212(4)
DC Input Module Operation
216(1)
DC Sinking Input Module Specifications
217(3)
Solid-State Sensor Interface to DC Input Modules
220(2)
A Final Note on Sinking and Sourcing
222(1)
Analog Inputs
222(9)
Specialty Modules
231(6)
Output Modules
237(26)
Discrete Output Modules
238(5)
Transistor-Transistor Logic (TTL) Output Modules
243(1)
Relay Output Modules
243(5)
Module Selection Considerations
248(1)
Choosing the Proper Output Module
249(1)
Isolated Output Modules
250(1)
Interposing Relays
251(1)
Surge Suppression and Output Modules
251(2)
High-Density I/O Interface
253(1)
Analog Outputs
253(2)
Emergency-Stop Switches and PLC Applications
255(2)
I/O Modules in Hazardous Locations
257(1)
Hardware Considerations Before Installing PLCs in Class I, Division 2, Areas
258(5)
Putting Together a Modular PLC
263(36)
Racks, Chassis, or Baseplates
264(6)
The Local, or Base, PLC
270(1)
Local Expansion
270(1)
Remote I/O Expansion
271(2)
PLC Networking
273(1)
Selection and Placement of I/O Modules
273(2)
Power Supply Selection
275(11)
I/O Racks and Expansion
286(6)
Rockwell Automation ControlLogix Family of PLCs
292(7)
PLC Processors
299(54)
The Processor's Function
300(1)
The Processor's Operating System
300(3)
Processor Scanning
303(2)
Omron CQM1 Operating Cycle
305(2)
The Watchdog Timer
307(2)
Processor Ports
309(2)
The RS-232C Communication Standard
311(1)
Serial Communication Between a Personal or Industrial Computer and the PLC
312(5)
Processor-Operating Modes
317(3)
On-Line Editing
320(1)
Battery Backup for the Processor's Volatile Memory
320(2)
Lithium Battery Handling and Disposal
322(1)
Nonvolatile Memory: EEPROM
323(3)
Passwords
326(2)
The Allen-Bradley SLC 500 Modular Processors
328(7)
Rockwell Automation's Logix 5550 Controller
335(1)
The General Electric Series 90-30 Processors
336(10)
Choosing the Correct Processor for an Application
346(7)
Introduction to ControlNet and DeviceNet
353(50)
The ControlNet Network
354(1)
ControlNet Network Applications
354(4)
ControlLogix ControlNet Interface Module
358(2)
Desktop or Industrial Computer Interface Card
360(2)
ControlNet Cable System
362(1)
ControlNet Segment
363(3)
ControlNet and Scheduled and Unscheduled Communications
366(3)
Network Update Time
369(1)
Scheduled Maximum Node
369(1)
Unscheduled Maximum Node
370(2)
Slot Time
372(1)
RSNetWorx for ControlNet
372(1)
Introduction to the DeviceNet Network
373(4)
Network Power Supplies
377(1)
Maximum Trunk Line Distance
377(3)
Cumulative Drop Line Length
380(1)
DeviceNet Interface
381(1)
Node Commissioning
381(2)
RSNetWorx for DeviceNet Software
383(7)
Electronic Data Sheets
390(13)
Part II PLC Instructions
Processor Data Organization
403(24)
SLC 500 Files
404(2)
Data Files
406(13)
User-Defined Files
419(8)
The Basic Relay Instructions
427(20)
Bit, or Relay, Instructions
428(1)
The Normally Open Instruction
428(1)
The Output Instruction
429(1)
Modular SLC 500 Instruction Addressing
430(2)
The Normally Closed Instruction
432(2)
The One-Shot Instruction
434(3)
The Output-Latching Instruction
437(2)
The Negated Output Instruction
439(1)
Internal Bit-Type Instructions
439(8)
Understanding Relay Instructions and the Programmable Controller Input Modules
447(20)
Interfacing a Start-Stop Push-Button Station to a Programmable Controller
451(3)
User Program Development for a Start-Stop Push-Button Interface
454(7)
Motor Starter Circuits and the Overload Contacts
461(1)
Special Considerations for PLC Control of Motor Starters
462(5)
Documenting Your PLC System
467(24)
Why Add Documentation to Your User Program?
468(1)
Information to Include in PLC Documentation
468(4)
Documentation and Software Packages
472(1)
Types of Documentation
472(9)
Adding Documentation When Developing a New Application
481(10)
Timer and Counter Instructions
491(28)
Timer Instructions
492(1)
SLC 500 Timers
492(4)
The On-Delay Timer Instruction
496(2)
The Off-Delay Timer Instruction
498(2)
The Retentive Timer Instruction
500(1)
The Reset Instruction
501(1)
PLC Counter Instructions
502(1)
Allen-Bradley Counters
503(3)
How Counters Work
506(1)
The Count-Up Instruction
507(1)
The Count-Down Instruction
508(2)
The High-Speed Counter Instruction
510(1)
The Counter Reset Instruction
511(1)
The Clear Instruction
511(1)
Combining Timers and Counters
511(8)
Comparison and Data-Handling Instructions
519(34)
Comparison Instructions
520(4)
Data-Handling Instructions
524(13)
Logical Instructions
537(16)
Sequencer Instructions
553(18)
The Sequencer
554(1)
Sequencer Instructions
554(1)
The SLC 500 Sequencer Output Instruction
555(6)
Programming the Sequencer Output Instruction
561(1)
Multiple Sequencers and File Designation
562(1)
Applying Hexadecimal Numbers and Masks with SLC 500 Programming Instructions
563(8)
Program Flow Instructions
571(24)
Terminology
574(1)
Subroutines
574(10)
Jump to Label Instruction
584(2)
Immediate Input with Mask (IIM) Instruction
586(2)
The Refresh Instruction
588(2)
Master Control Reset (MCR) Instruction
590(5)
Appendix A Instruction Set Reference 595(6)
Appendix B SLC 500 Status File Overview 601(4)
Appendix C Applying Hexadecimal Numbers in PLC Masking Applications 605(4)
Glossary 609(8)
Index 617

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