对于Modbus通讯来说，怎么样方便的测试通讯很有价值。用自己写的代码很麻烦。这个测试软件，基本上解决了一般的Modbus通讯的测试问题。值得推广。-Modbus communication for example, how to facilitate the testing of communication very valuable. Write their own code is cumbersome. The test software is basically to solve the general problem of testing Modbus communications. Worth promoting.