Tham khảo tài liệu 'automating manufacturing systems with plcs (p1)', kỹ thuật - công nghệ, tự động hoá phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | page i Copyright c 1993-2003 Hugh Jack jackh@ . Permission is granted to copy distribute and or modify this document under the terms of the GNU Free Documentation License Version or any later version published by the Free Software Foundation with no Invariant Sections no Front-Cover Texts and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License . This document is provided as-is with no warranty implied or otherwise. There have been attempts to eliminate errors from this document but there is no doubt that errors remain. As a result the author does not assume any responsibility for errors and omissions or damages resulting from the use of the information provided. Additional materials and updates for this work will be available at http clay-more. engineer. gvsu. edu jackh books. html page il TODO LIST 2. PROGRAMMABLE LOGIC CONTROLLERS . INTRODUCTION Ladder Logic Programming PLC Connections Ladder Logic Inputs Ladder Logic Outputs A CASE STUDY SUMMARY PRACTICE PROBLEMS PRACTICE PROBLEM SOLUTIONS ASSIGNMENT PROBLEMS 3. PLC INTRODUCTION INPUTS AND OUTPUTS Inputs Output Modules RELAYS A CASE STUDY ELECTRICAL WIRING DIAGRAMS JIC Wiring Symbols SUMMARY PRACTICE PROBLEMS PRACTICE PROBLEM SOLUTIONS ASSIGNMENT PROBLEMS 4. LOGICAL SENSORS . INTRODUCTION SENSOR WIRING Switches Transistor Transistor Logic TTL Sinking Sourcing Solid State Relays PRESENCE DETECTION Contact Switches Reed Switches Optical Photoelectric Sensors Capacitive Sensors Inductive Sensors Ultrasonic Hall Effect .
