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In this paper, according to analyzing the domestic and foreign recent research status and future developments of open architecture CNC system, an open soft system with configurable architecture based on PC + programmable I/O interface card has been studied. The research is studied for the drawbacks of existing open CNC system based on PC and the unresolved problems of preliminary study presented by the research group, to satisfy the development requirements of low cost, high performance that means high speed, high precision and the large amount of data processing, configurable architecture and modularization. Meanwhile, this dissertation makes systematic and deep going study on function requirements, structure planning based on programmable I/O interface card, hardware-configurable modeling, circuits design of control chip, task assigning between software and hardware and servo control.

Hardware-configuration based on FPGA for open CNC system