Abstract: production line as an example，a virtual model and its simulation operating environment were created，enabling data communication between the engineering intelligent control production line management system and Unity WebGL. This resolved the difficulties users encountered when manipulating virtual scenes with commands. Through testing and calculations，it was determined that the latency time is less than 0.1s and positional accuracy within 0.1°，achieving a low-latency，high-precision digital twin function. This technology provides a foundation and reference for the digital transformation of smart manufacturing.