Compared with the photoelectric analog galvanometer, the installation of the grating requires a larger space, so the encoder part at the bottom of the grating digital galvanometer is higher than that of the photoelectric analog galvanometer. The grating digital galvanometer is more stable than the photoelectric analog galvanometer, and has a smaller drift subject to temperature changes. The 23bit resolution digital galvanometer achieves excellent positioning accuracy and repeated positioning accuracy, supports position monitoring and position feedback of the galvanometer, real-time detection of the status, and ensures safe and reliable operation.