With the development of power electronics technology and control technology, AC variable frequency speed has been widely used in the field of industrial motor drag. Because PLC is powerful, easy to use and highly reliable, it is often used as the control of field data collection and equipment. The technology of configuration software can be used as a software platform tool for users to customize functions, and a friendly human-machine interface can be developed on a PC, which can be "intelligent" control of automation equipment through PLC. ...
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