西门子S7⁃1200PLC与威纶通变频器的Modbus RTU通信研究

Research on Modbus RTU communication between Siemens S7-1200 PLC and Weinview inverter

Modbus RTU串口通信的传输效率高、硬件成本低廉,可将不同厂商的智能设备组成工业网络,深受各大厂商的青睐。基于西门子S7-1200PLC,文章深入研究了PLC与威纶通变频器的Modbus RTU通信,实现了一台PLC控制多台变频器的目标,为企业的智能化升级提供了新的思路。

Modbus RTU serial communication has the advantages of high transmission efficiency and low hardware cost.,which can form an industrial network with intelligent devices from different manufacturers,and is favored by major manufacturers.Based on vSiemens vS7-1200 PLC,this paper deeply studies the Modbus RTU communication between PLC and Weinview inverter,realizes the goal of one PLC controlling multiple frequency converters?and provides a new idea for the intelligent upgrade of enterprises.