Design of Communication of Corrosion On-line Monitor Based on Modbus Protocol

The paper introduced methods of using Modbus protocol to implement communication between corrosion on-line monitor and configuration softwares such as King View and WinCC,and using PSTN to transmit remote data of the corrosion on-line monitor.The communication method has applied in monitoring of corrosion parameters of industrial circulating water,which has high reliability of data transmission,strong real-time,and certain popularization and application value.