Abstract
In view of the communication difficulties of CNC machine tools with only RS232 and RS485 interfaces in industry, this paper studies DNC technology and multi-protocol conversion technology, proposes to use CAN bus to build DNC system, establish multi-protocol conversion module communication model, and build software and hardware platform based on STM32F103VCT6 MCU. The CAN bus protocol, RS232 bus protocol and RS485 bus protocol CAN be converted to each other. The experimental results verify the accuracy and reliability of the multi-protocol conversion module, realize the two-way transmission of data, and solve the problem of communication difficulties between different protocols.
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