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This paper proposes a novel architecture of the numerical control (NC) system based on multiprocessor and real-time Ethernet. To comply with the trend of modular, open framework NC system, the hardware architecture is composed of ARM, DSP and FPGA modules, of which the ARM module is responsible for HMI (human-machine interface), the DSP module is in charge of core calculation, and the FPGA module...
Ethernet communication isn't used directly in numerical control (NC) system, since its non-deterministic time delays and non-synchronous communication. In this paper, the system architecture of digital interface and the communicating- protocol of digital interface in NC system based on the Ethernet technology are made. The protocol was tested by experiment in feasibility. The results show that it...
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