DSE21/21 warping machine DSE21/21 warping machine is driven by high-performance servo motors and uses a high-precision laser diameter caliper. In this case, it is with high reliability, high control precision, and therefore easy to operate. It is suitable for spandex yarns. After warping, the spandex yarns can be warped to beams as per the requested length and quantity and the consistency of the same beam lot can be ensured. Using a high-precision cam scan stop device to detect yarn breakage and yarn missing. With safety protection function of braking when fail-stop and fault shutdown and rapid braking.