This paper introduces the application of Siemens S7-300 PLC and Toshiba Inverter VF-A7 based Profibus-DP communication in the electric control system of drive branch of paper machine.The Profibus-DP fieldbus is used to realize the communication between PLC and inverter,which meets the requirements of the electric control system of the drive branch of the paper machine.The whole system has high control precision,good real-time performance and good application effect.
paper machinePLCProfibus-DP communicationfrequency converter
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