基于Modbus协议的PC机与变频器通信的实现

Realization of the Communicaton between PC and Inverter Based on Modbus Protocol

文章结合施奈德电气公司的Altivar 3 1型异步电机变频器,介绍了Modbus RTU模式下的PC机与变频器间通信的关键技术及利用VB实现的程序。

In this paper.with example of Schneider Electric Company＇s Altivar 31 asynchronous inverter,the key technology of communication between PC and inverter under the mode of Modbus RTU is introduced ,and the program programmed by VB is provided.