Abstract: In order to explore how to achieve more convenient and accurate real-time control of Siemens inverter and ensure the accuracy of its control frequency.The USS communication protocol used by Siemens is studied.Taking Siemens s7-200 series PLC and Siemens MM420 series inverter as examples, a scheme is proposed to control the motor operation and realize automatic sorting control by using the host unit of PLC to communicate with the inverter using USS protocol.Run the test through practice. [1] the data structure and communication transmission characteristics of USS communication protocol were introduced in detail, and the inverter control principle of USS communication protocol of Siemens PLC was expounded. At the same time, it was compared with the traditional analog quantity control inverter.It has been proved that the control of frequency converter by USS communication protocol is applicable to general industrial process, and its control method has certain practical value and reference value for similar modern industrial control., the system has the characteristics of accurate positioning, reliable operation, strong practicability and good effect.Abstract: In order to explore how to achieve more convenient and accurate real-time control of Siemens inverter and ensure the accuracy of its control frequency.The USS communication protocol used by Siemens is studied.Taking Siemens s7-200 series PLC and Siemens MM420 series inverter as examples, a scheme is proposed to control the motor operation and reali...Show More
