In view of the shortcomings of traditional pulse or analog control systems in terms of realtime performance, stability and synchronization, a duallinearmotor position linkage control scheme based on EtherCAT communication was proposed. Three position linkage control modes were designed. Moreover, the distributed clock mechanism of EtherCAT was analyzed in detail. The linkage control experiment platform was built. The experiment results showed that the duallinearmotor position linkage control system based on EtherCAT communication had the advantages of fast response, good dualaxis synchronization and good alternating performance. It was suitable for applications which required high synchronization accuracy and high speed response.