This server / ModBus slave simulates equipment communicating with the ModBus protocol on a TCP / IP as a controller for example. It responds to requests from a master / client. I used ModScan32 and a monitoring software that I developed in my company

实现标准的modbus协议 1)实现标准的modbus rtu 协议. 2)实现标准的modbus tcp ip协议(there is a standard protocal of modbus)