Programmable Logic Controllers, 4/e

William Bolton

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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 been given to IEC 1131-3 and all the programming methods in the standard. The new edition brings the book fully up to date with the current developments in PLCs, describing new and important applications such as PLC use in communications (e.g. Ethernet – an extremely popular system), and safety – in particular proprietary emergency stop relays (now appearing in practically every PLC based system). The coverage of commonly used PLCs has been increased, including the ever popular Allen Bradley PLCs, making this book an essential source of information both for professionals wishing to update their knowledge, as well as students who require a straight forward introduction to this area of control engineering. Having read this book, readers will be able to: * Identify the main design characteristics and internal architecture of PLCs * Describe and identify the characteristics of commonly used input and output devices * Explain the processing of inputs and outputs of PLCs * Describe communication links involved with control systems * Develop ladder programs for the logic functions AND, OR, NOT, NAND, NOT and XOR * Develop functional block, instruction list, structured text and sequential function chart programs * Develop programs using internal relays, timers, counters, shift registers, sequencers and data handling * Identify safety issues with PLC systems * Identify methods used for fault diagnosis, testing and debugging programs Fully matched to the requirements of BTEC Higher Nationals, students are able to check their learning and understanding as they work through the text using the Problems section at the end of each chapter. Complete answers are provided in the back of the book.

 

Table of Contents

Preface. Programmable logic controllers. Input-output devices. Number systems. I/O processing. Ladder and functional block programming. IL, SFC and ST programming methods. Internal relays. Jump and call. Timers. Counters. Shift registers. Data handling. Designing systems. Programs. Appendix: Symbols.Answers. Index.

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這是PLC的介紹,對於困惑的學生、技術人員和管理人員來說,這是他們一直在等待的。在這本直接、易於閱讀的指南中,Bill Bolton將專業術語降到最低,考慮了IEC 1131-3標準中的所有編程方法,特別是梯形編程,並以不特定於設備的方式呈現主題,以確保最大程度地適用於電子和控制系統課程。這本暢銷書的第四版已經擴展,增加了對工業系統和PLC的覆蓋範圍,並更多地考慮了IEC 1131-3標準中的所有編程方法。新版書籍完全更新了PLC的最新發展,描述了PLC在通信(例如以太網-一個非常流行的系統)和安全(特別是專有的緊急停止繼電器-現在幾乎出現在每個基於PLC的系統中)等新的重要應用。增加了常用PLC的覆蓋範圍,包括非常受歡迎的Allen Bradley PLC,使得這本書成為專業人士更新知識的重要信息來源,以及需要對控制工程領域進行簡單介紹的學生。閱讀完這本書後,讀者將能夠:*識別PLC的主要設計特性和內部架構*描述和識別常用的輸入和輸出設備的特性*解釋PLC的輸入和輸出處理*描述與控制系統相關的通信鏈路*開發AND、OR、NOT、NAND、NOT和XOR邏輯功能的梯形程序*開發功能塊、指令列表、結構化文本和順序功能圖程序*使用內部繼電器、計時器、計數器、移位寄存器、序列器和數據處理開發程序*識別PLC系統的安全問題*識別用於故障診斷、測試和調試程序的方法完全符合BTEC Higher Nationals的要求,學生可以在每章結束時使用問題部分來檢查他們的學習和理解。書的背面提供了完整的答案。



 


目錄



前言。可編程邏輯控制器。輸入輸出設備。數字系統。I/O處理。梯形和功能塊編程。IL、SFC和ST編程方法。內部繼電器。跳躍和呼叫。計時器。計數器。移位寄存器。數據處理。系統設計。程序。附錄:符號。答案。 索引。