求翻译：本篇文章中，首先阐述了电梯的基本结构和分类，其次简单陈述了可编程控制器的结构和基本工作原理。在此基础上运用西门子S7-200对四层交流双速电梯设计控制系统，其中含有轿内指令和厅外召唤信号的登记与消除、厅外召唤信号的登记消除、选层和定向、电梯的开关门、上下行控制、平层控制、高低速运行控制等部分，并且运用组态王6.5.3完成对四层电梯的监控仿真。仿真结果显示次程序设计准确确，正确的停层开关门运行并准确的表现出了双速特性。是什么意思？

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In this article, first set out the basic structure of the elevator and classification, followed by a simple statement programmable controller structure and basic theory. On this basis using Siemens S 7 - 200 FOR THE 4-story elevator design AC Dual Speed Control System, which contains instructions in

In this article, first elaborated the elevator basic structure and the classification, next stated the programmable controller structure and the basic principle of work simply.Utilizes Simens S7-200 in this foundation to four exchange two speed elevator design control system, in which includes in th

In this article, first set out the basic structure and classification of the elevator, followed by a simple statement of the programmable controller structure and basic principles. This Foundation Shang using Siemens S7-200 on four layer AC double speed elevator design control system, which contains

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