Implementation of Gigabit Custom Protocol Stack and its Application in Laser Marking

To solve the transmission problem of laser marking instruction and coordinate data in the laser marking system, a field editable logic device FPGA is proposed to realize the Ethernet custom protocol stack. In this paper, a laser marking data transmission system based on FPGA is designed. The protocol stack is defined by reconstructing Ethernet protocol frames, and the dual-channel analysis and storage of laser marking instructions and coordinate data are completed. At the same time, the system control module receives the multi-channel synchronization signal of the laser galvanometer and the moving platform, realizes the synchronization of the nanosecond signal, and completes the digital adjustable control of the CO
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coherent laser. The experiment proves that the system has high transmission stability, the fastest transmission rate of the custom protocol is 986 Mbps, which can reach the industrial level, the system function is stable, and the test performance is superior.