Programmable Logic Controllers: Hardware and Programming

by Rabiee, Max; Fardo, Stephen W.

• ISBN13: 9781566378734
• ISBN10: 1566378737
• Format: Paperback
• Copyright: 2002-01-01
• Publisher: Goodheart-Willcox Pub

Summary

Emphasizes practical use of the Programmable Logic Controllers in process and industrial control systems.

Table of Contents

Programmable Logic Controller (PLC) Overview	11	(14)
Introduction	11	(1)
PLC History and Development	12	(1)
PLC Block Diagram	12	(1)
Central Processing Unit	13	(3)
Memory Devices	16	(2)
Address Decoder Circuit	18	(1)
Peripheral Chips	18	(1)
Discrete Input Modules	19	(1)
Discrete Output Modules	19	(1)
Analog Input/Output Modules	20	(1)
PLC Power Supply	20	(1)
Summary	20	(1)
Glossary of Terms	21	(2)
Review Questions	23	(2)
PLC and Control System Components	25	(20)
Introduction	25	(1)
PLC Communication Systems	26	(3)
PLC Memory Maps	29	(1)
PLC Terminology and Principles	29	(2)
PLC Selection and Installation	31	(1)
PLC Input/Output Connections	32	(1)
Electromechanical Terms and Descriptions	33	(3)
Electric Motors	36	(1)
DC Motor Classification and Characteristics	36	(3)
AC Motor Classification and Characteristics	39	(2)
Summary	41	(1)
Glossary of Terms	41	(3)
Review Questions	44	(1)
Number Systems and Codes	45	(16)
Introduction	46	(1)
Decimal Number System	46	(1)
Binary Number System	47	(1)
Binary-to-Decimal Conversion	47	(1)
Decimal-to-Binary Conversion	48	(1)
Binary Addition	49	(1)
Binary Subtraction	50	(1)
Binary Multiplication	51	(1)
Binary Division	51	(1)
Hexadecimal Number System	52	(1)
Octal Number System	53	(1)
Binary Coded Decimal System	54	(1)
Gray Code	55	(1)
Alphanumeric Code	55	(2)
Summary	57	(1)
Glossary of Terms	57	(1)
Review Questions	58	(3)
Creating Relay Logic Diagrams	61	(20)
Introduction	61	(1)
Relay Logic Diagrams	61	(1)
Discrete Input Devices	62	(1)
Normally Open and Normally Closed Input Devices	63	(1)
Discrete Output Devices	64	(2)
Relay Coils and Contacts	66	(1)
Rules for Drawing Relay Logic Diagrams	67	(6)
Creating Relay Logic Diagrams for Industrial Control Circuits	73	(3)
Summary	76	(1)
Glossary of Terms	77	(1)
Review Questions	78	(3)
PLC Programming	81	(30)
Introduction	81	(1)
Creating PLC Ladder Logic Diagrams from Relay Logic Diagrams	82	(3)
Programming Ladder Logic Diagrams with Normally Open and Normally Closed Switches	85	(3)
Programming Ladder Logic Diagrams with Normally Open and Normally Closed Contacts	88	(1)
PLC Program Scan Time	89	(3)
PLC Program and Data Files	92	(2)
Programming Ladder Logic Diagrams with Latch/Unlatch	94	(1)
Loading and Troubleshooting PLC Ladder Diagrams in Run Mode	95	(3)
Using PLC Force Function for Troubleshooting	98	(4)
Creating and Printing PLC Program Reports	102	(3)
Using Utility Functions to Save and Retrieve PLC Programs	105	(2)
Summary	107	(1)
Glossary of Terms	108	(1)
Review Questions	109	(2)
Programming Logic Gate Functions in PLCs	111	(30)
Introduction	111	(1)
Combinational and Sequential Logic Gate Circuits	112	(1)
Boolean Expressions, Truth Tables, and Logic Gate Circuits	112	(2)
Not Gates or Inverters	114	(1)
And Gates	115	(1)
Or Gates	115	(2)
Nand Gates	117	(2)
Nor Gates	119	(2)
XOR (Exclusive OR) Gates	121	(1)
XNOR (Exclusive NOR) Gates	122	(2)
Simplifying Boolean Expressions	124	(3)
Creating PLC Ladder Logic Diagrams from Logic Gate Circuits	127	(3)
Creating PLC Ladder Logic Diagrams from Boolean Expressions	130	(2)
Creating Logic Circuits from PLC Ladder Logic Diagrams	132	(4)
Summary	136	(1)
Glossary of Terms	136	(1)
Review Questions	137	(4)
PLC Timer Functions	141	(16)
Introduction	141	(1)
Timer Functions	142	(3)
PLC Timer Function Registers	145	(1)
Fixed Preset Value Nonretentive Timer ON-Delay Functions	146	(1)
Variable Preset Value Nonretentive Timer ON-Delay Functions	147	(2)
Retentive Timer ON-Delay Functions	149	(2)
Timer OFF-Delay Functions	151	(1)
Interlocking Timers	152	(1)
Cascading Timers to Increase the Timing Value	153	(1)
Summary	154	(1)
Glossary of Terms	155	(1)
Review Questions	156	(1)
PLC Counter Functions	157	(12)
Introduction	157	(1)
PLC Counter Functions	157	(1)
PLC Counter Function Registers	158	(1)
PLC Count Up Functions	159	(1)
PLC Count Down Functions	160	(2)
Connecting PLC Counter Functions	162	(1)
Cascading Counters	163	(3)
Creating PLC Ladder Logic Diagrams with Counters and Timers	166	(1)
Summary	166	(1)
Glossary of Terms	166	(2)
Review Questions	168	(1)
PLC Math Functions	169	(10)
Introduction	169	(1)
Addition	169	(1)
Subtraction	170	(3)
Multiplication	173	(2)
Division	175	(1)
Summary	176	(1)
Glossary of Terms	176	(2)
Review Questions	178	(1)
PLC Logic Functions	179	(12)
Introduction	179	(1)
Logic Gate Functions	180	(3)
Shift Left Function	183	(3)
Shift Right Function	186	(2)
Summary	188	(1)
Glossary of Terms	189	(1)
Review Questions	189	(2)
PLC Compare, Jump, and MCR Functions	191	(10)
Introduction	191	(1)
Compare Functions	192	(4)
Unconditional Jump	196	(1)
Conditional Jump	197	(1)
Master Control Reset (MCR)	197	(2)
Summary	199	(1)
Glossary of Terms	199	(1)
Review Questions	200	(1)
PLC Subroutine Functions	201	(10)
Introduction	201	(1)
Subroutine Concept	202	(1)
Jump to Subroutine	203	(1)
Return from Subroutine	204	(2)
Subroutine Applications	206	(1)
Summary	207	(2)
Glossary of Terms	209	(1)
Review Questions	210	(1)
Sequencer Functions	211	(18)
Introduction	211	(1)
Sequencer Concept	212	(2)
Sequencer Output Function	214	(5)
Sequencer Compare Function	219	(2)
Sequencer Load Function	221	(1)
Cascading Sequencers	221	(2)
Paralleling Sequencers	223	(2)
Summary	225	(1)
Glossary of Terms	226	(1)
Review Questions	227	(2)
PLC Networks in Manufacturing	229	(12)
Introduction	229	(1)
Local Area Networks in Industry	230	(1)
Network Communication Channeling	230	(1)
Transmission Media	231	(1)
Network Connection Topologies	232	(1)
Network Access Control Schemes	233	(1)
PLC Network Hardware	234	(1)
PLC Network Software	235	(3)
Summary	238	(1)
Glossary of Terms	238	(1)
Review Questions	239	(2)
Troubleshooting and Servicing the PLC System	241	(12)
Introduction	241	(1)
Routine Maintenance	242	(1)
Hardware	243	(3)
Wiring Connections	246	(1)
Software Error Detection	247	(2)
Summary	249	(3)
Glossary of Terms	252	(1)
Review Questions	252	(1)
Appendices	253	(8)
Appendix A	253	(6)
Appendix B	259	(1)
Appendix C	260	(1)
Glossary	261	(14)
Index	275