Optical Fiber Communication Technology Research Base On SERCOS Bus

As the digital servo technology and open architecture CNC system development, how toachieve servo control unit and high-speed digital communication between devices into thefield of motion control the key issues facing. With the CNC control accuracy and real-timerequirements increasing, analog interface, can not meet the requirements of modern CNCtechnology. Purpose of this paper is to SERCOS fieldbus technology and DSP embeddedtechnologies, to meet the high-speed and high precision CNC control requirements to ensurereal-time data transmission and reliability.Detailed analysis of papers in the SERCOS bus protocol architecture and workingprinciple based on the combination of high-performance floating-point processor DSP6713,the design of the SERCOS bus interface module. SERCON816 initialization parameters onthe calculation of in-depth study and exploration. This paper designed the SERCOS interface,the initialization process, including SERCON816 of RAM and register address definition andcalculation of assignment, switch communication stage, parameter storage and read-writeprocess, the implementation mechanism of command process, service access and periodicdata channels The data transfer mechanism, data transfer mode and data mode of operation.Finally, the structures based on SDS9-4CNCH SERCOS motion control system interface testsystem and the main station for the test. Test results show that the design of SERCOS masterSERCOS interface module to complete the basic communication interfaces...