1、 中文中文 5000 字字 本科毕业设计本科毕业设计外文翻译外文翻译 外文译文题目（中文）外文译文题目（中文）可编程逻辑可编程逻辑控制器控制器及其及其控制系统控制系统 1 Programmable Logic Controllers and Control System W. Bolton Received 28 April 2004; received in revised form 3 November 2004; accepted 29 Novembe 2004； Available online 29 January 2005 Abstract Early electric contr
2、ol system of the transporter over the relay-contactor complex system composed of The system design cycle,there is a long,bulky,high cost,defects,no data processing and communications functions, must be hand operated.PLC control system for electric transport- er with a simple connection to control sp
3、eed, reliability and maintainability is good,easy to insta- ll,repair and improvement and so on.With economic development,growing transporter from manual to automatic,and gradually formed the mechanization and automation. PLC applied to electrical control system and can realize automatic control ope
4、ration and reduce system operating costs.Communications and data connectivity options make FX1N in volume,communications and special function modules such important applications perfectly.The topics include:analysis of plant and a clear system control requirements; PLC selection; determine the systems I / O device number and type; control process design; control programming. Key words：PLC，control system，I/O points 1 。About Programmable Logic Controllers (PLCs) PLCs (programma
