1、 1 摘要摘要 随着大型和巨型楼宇的兴建,电梯得到了快速的发展。在电梯 逻辑控制方面,由于可编程控制器(PLC)具有编程软件采用易学易 懂的梯形图语言、控制灵活方便、抗干扰能力强、运行稳定可靠、 易操作、 维修方便等特点,使可编程控制器(PLC)已全面代替原来的 继电器控制。 将可编程序控制器(PLC)应用于电梯进行逻辑控制， 大大提高了电梯可靠性、可维护性以及灵活性，延长了使用寿命.， 同时缩短了电梯的开发周期。 这种电梯控制系统较原有电梯控制系 统可以更容易的完成更为复杂的控制任务， 其许多功能是传统的继 电 器 无法 实现 的。 编程 逻 辑控 制器 （ Programmable Log
2、ic Controller，PLC） ，它是一种专用于工业控制的计算机，其硬件结 构基本上与微型计算机相同， 它采用一类可编程的存储器，用于 其内部存储程序，执行逻辑运算、顺序控制、定时、计数与算术操 作等面向用户的指令，并通过数字或模拟式输入/输出控制各种类 型的机械或生产过程。 围绕这个目标，本文首先介绍了电梯的基本结构，接着论述 了各主要环节的控制部分以及控制要求， 然后着重介绍了基于西门 子 S7-200 CPU224 PLC 的电梯控制系统程序开发过程，最后通过实 验装置反复调试运行以及仿真。 经测试仿真调试，该基于 PLC 的电梯控制系统实现了预期的功 能，圆满完成了此次毕业设计的
3、任务。通过这次锻炼，我积累了宝 贵的经验，为以后的工作打下了良好的基础。 关键词：关键词：可编程控制器，电梯控制 2 Abstract With the construction of large and giant buildings, elevators have been rapid developed. In the elevator logic control, programmable logic controller (PLC) whose programming software ladder language is easy to learn and easy to unde
4、rstand, with its feature of control flexibility, anti-interference ability, stable and reliable, easy to operate, easy to maintain , programmable controller (PLC) has been fully replace the original relay control. Its applied to the elevator logic control, greatly improved the elevator reliability,
5、maintainability, and flexibility to extend the service life, while reducing the development cycle of the elevator. Compared with the original elevator control system , the elevator control system can complete more complex control tasks more easily, many of its functions can not be achieved by conven
6、tional relays. PLC, which is dedicated to the industrial control computer, the hardware structure is the same as microcomputer, it uses a programmable memory for its internally stored program, which can perform the logical, sequential control, timing, counting and arithmetic operations which are user-oriented , and control various types of machinery or production processes through digital or analog input / output control. Around this goal, this design first introduces the basic structure of th
