Development of CAN Bus Application Layer Protocol for Beam Control System

A special Controller Area Network (CAN) bus application layer protocol is designed for the high reliable and high real-time control network of the beam control system. In this paper, messages on the network are classified and the identifier coding, data coding, network management mechanism and physical interface are defined. Then network load analysis for the real-time control network is introduced. At last a test platform based on CAN bus for the beam control system is built to validate the design. Experiment results indicate that the developed CAN control network for the beam control system is very reliable and has good real-time performance and low network load rate.