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来源：百度知道 编辑：UC知道 时间：2024/09/28 13:09:09
可编程控制器（PLC）是集计算机技术、自动控制技术、通信网络技术于一体的新型自动控制装置。其性能优越，已被广泛应用于工业控制的各个领域。PLC应用已经成为一个控制领域的潮流，随着我国科技水平的不断发展和提高，PLC技术将在我国得到更加全面的推广和应用。
S7-200系列PLC是超小型化的PLC，它适用于各行各业，各种场合中的自动检测、监控等。S7-200 PLC的强大功能使其无论单机运行，或连成网络都能实现复杂的控制功能。S7-200PLC有4个不同的基本型号与8种CPU，供用户选择使用。
关键词：PID；变频器； 比例控制

Programmable Controller (PLC) is a computer technology, automatic control technology, communication network technology to new integrated control devices. Its superior performance, has been widely used in industrial control the various fields. PLC control has become an area of the trend, with the level of China's science and technology development, and improving PLC technology in China will be more comprehensive promotion and application. S7-200 Series PLC is the super-small PLC, which applies to all industries, all kinds of occasions, the automatic detection, monitoring. S7-200 PLC whether it functions in single operation, or even into a network can realize complex control functions. PLC has four different basic models with 8 CPU for users to choose.