Programmable logic controllers : an introduction / / W. Bolton

• Autore: Bolton W (William), <1933->
• Pubblicazione: Oxford, [Eng.] ; ; Burlingham, Mass., : Newnes, 2006
• Edizione: 3rd ed.
• Descrizione fisica: 1 online resource (302 p.)
• Disciplina: 629.895
• Soggetto topico: Logic circuits; Programmable logic devices; Programmable controllers
• Note generali: Previous ed.: 2000.; Includes index.
• Nota di contenuto: Cover; Programmable Logic Controllers; Contents; Preface; Changes from third edition; Aims; Structure of the book; 1 Programmable logic controllers; 1.1 Controllers; 1.1.1 Microprocessor controlled system; 1.1.2 The programmable logic controller; 1.2 Hardware; 1.3 Internal architecture; 1.3.1 The CPU; 1.3.2 The buses; 1.3.3 Memory; 1.3.4 Input/output unit; 1.3.5 Sourcing and sinking; 1.4 PLC systems; 1.4.1 Programming PLCs; Problems; 2 Input-output devices; 2.1 Input devices; 2.1.1 Mechanical switches; 2.1.2 Proximity switches; 2.1.3 Photoelectric sensors and switches; 2.1.4 Encoders ; 2.1.5 Temperature sensors2.1.6 Position/displacement sensors; 2.1.7 Strain gauges; 2.1.8 Pressure sensors; 2.1.9 Liquid level detector; 2.1.10 Fluid flow measurement; 2.1.11 Smart sensors; 2.2 Output devices; 2.2.1 Relay; 2.2.2 Directional control valves; 2.2.3 Motors; 2.2.4 Stepper motors; 2.3 Examples of applications; 2.3.1 A conveyor belt; 2.3.2 A lift; 2.3.3 A robot control system; 2.3.4 Liquid level monitoring; Problems; 3 Number systems; 3.1 The binary system; 3.2 Octal and hexadecimal; 3.2.1 Octal system; 3.3 Binary arithmetic; 3.3.1 Signed numbers; 3.3.2 One's and two's complements ; 3.3.3 Floating point numbers3.4 PLC data; Problems; 4 I/O processing; 4.1 Input/output units; 4.1.1 Input units; 4.1.2 Output units; 4.2 Signal conditioning; 4.3 Remote connections; 4.3.1 Serial and parallel communications; 4.3.2 Serial standards; 4.3.3 Parallel standards; 4.3.4 Protocols; 4.3.5 ASCII codes; 4.4 Networks; 4.4.1 Distributed systems; 4.4.2 Network standards; 4.4.3 Examples of commercial systems; 4.5 Processing inputs; 4.6 I/O addresses; Problems; 5 Ladder and functional block programming; 5.1 Ladder diagrams; 5.1.1 PLC ladder programming; 5.2 Logic functions; 5.2.1 AND ; 5.2.2 OR5.2.3 NOT; 5.2.4 NAND; 5.2.5 NOR; 5.2.6 Exclusive OR (XOR); 5.3 Latching; 5.4 Multiple outputs; 5.5 Entering programs; 5.5.1 Ladder symbols; 5.6 Function blocks; 5.6.1 Logic gates; 5.6.2 Boolean algebra; 5.7 Program examples; 5.7.1 Location of stop switches; Problems; 6 IL, SFC and ST programming methods; 6.1 Instruction lists; 6.1.1 Ladder programs and instruction lists; 6.1.2 Branch codes; 6.1.3 More than one rung; 6.1.4 Programming examples; 6.2 Sequential function charts; 6.2.1 Branching and convergence; 6.2.2 Actions; 6.3 Structured text; 6.3.1 Conditional statements ; 6.3.2 Iteration statements6.3.3 Structured text programs; Problems; 7 Internal relays; 7.1 Internal relays; 7.2 Ladder programs; 7.2.1 Programs with multiple input conditions; 7.2.2 Latching programs; 7.3 Battery-backed relays; 7.4 One-shot operation; 7.5 Set and reset; 7.5.1 Program examples; 7.6 Master control relay; 7.6.1 Examples of programs; Problems; 8 Jump and call; 8.1 Jump; 8.1.1 Jumps within jumps; 8.2 Subroutines; Problems; 9 Timers; 9.1 Types of timers; 9.2 Programming timers; 9.2.1 Sequencing; 9.2.2 Cascaded timers; 9.2.3 On-off cycle timer; 9.3 Off-delay timers; 9.4 Pulse timers ; 9.5 Programming examples
• Sommario/riassunto: This is the introduction to PLCs for which baffled students, technicians and managers have been waiting. In this straightforward, easy-to-read guide, Bill Bolton has kept the jargon to a minimum, considered all the programming methods in the standard IEC 1131-3 - in particular ladder programming, and presented the subject in a way that is not device specific to ensure maximum applicability to courses in electronics and control systems.Now in its fourth edition, this best-selling text has been expanded with increased coverage of industrial systems and PLCs and more consideration has bee
• Titolo autorizzato: Programmable logic controllers
• ISBN: 1-280-62957-6; 9786610629572; 0-08-046295-2
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910817834303321
• Lo trovi qui: Univ. Federico II