Research on the High Precision Synchronous Control Method of the Fieldbus Control System

The synchronization control performance of the Fieldbus system (FCS) is an important guarantee for completion multi-axis collaborative machining tasks, and its accuracy one decisive factors quality. To improve FCS, this paper first makes a comprehensive analysis affecting in FCS. Secondly, by analyzing communication model linear Ethernet, distributed clock compensation method based on timestamps proposed to solve asynchronous problem data transmission ethernet bus topology. Then, CANopen application layer protocol, FCS device task collaboration ensure synchronous multiple devices Finally, experimental platform built functional verification testing method. results show that can achieve 50 ns 150 ns.