Experiment System Focused on Modbus Protocol

Modbus protocol is widely used in the domain of industry control for the strongpoints of simple protocol,expediently operating and low cost.To learn and master the main Modbus protocol better and promote the practice use of Modbus,this paper introduced Modbus protocol first and designed a Modbus experiment system which provided representative experimental projects.The hardware units of the system were mainly illuminated.The software design of the system was described from both general idea and specific function implement.A particular experiment project was illustrated.The experiment system operates simply and has friendly interface as in the practical use.It reveals the kernel Modbus protocol and contributes to quick mastery of Modbus protocol for the user.The system can be a reference of developing products of Modbus in industry.