nModbus类库，可以直接引用来开发做Modbus接口，或者上位机-nModbus library, you can make direct reference to develop Modbus interface, or PC

nmodbus类库使用总结，但发现其中也存在一定的问题，希望给大家做为参考-nmodbus summary library use, but we found that there are some problems, want to give you as a reference