Abstract: Programmable Logic Controllers (PLCs) are based on microprocessors, combining computer technology, automatic control technology, and are user-oriented and process-oriented. In recent years, many textile factories in China have applied PLCs to the electrical control of shuttleless looms, rationally combining and configuring human-machine interfaces, encoders, yarn breakage detection devices, multi-arm looms, electromagnetic clutches, and PLCs to construct PLC control systems to control the loom's movements. The application of PLC technology has played a crucial role in improving the quality of fabric, expanding the variety of fabrics, increasing the efficiency of looms, simplifying operation, and reducing labor intensity. Keywords: Air-jet loom, electronic dobby, programmable logic controller Abstract: The programmable controller (i.e., PLC) takes the microprocessor as a foundation, comprehensively integrating computer technology, automatic control technology, and the controlled process, characteristics, and user experience. In recent years, many domestic textile mills have applied PLC in the air-jet loom electrical control, combining the man-machine contact surface, encoders, break gauze equipment, reasonable dispositions, detector sets, dobby, magnetic clutch, and PLC to construct the PLC control system to control the loom movement. The application of PLC technology has played a very important role in improving the loom cloth cover quality, expanding fabric variety, enhancing loom efficiency, simplifying operation, reducing labor intensity, and so on. Key word: Air-jet loom, electronic dobby, programmable logic controller 0 Introduction The sheathing mechanism is a key component for controlling the movement of an air-jet loom, determining the smoothness of the loom's movement and the quality of the fabric structure. The shedding mechanism functions by sequentially and promptly driving the warp yarns according to the weft interlacing pattern on the fabric weave diagram to form a shed. After the weft yarn enters the shed, the two layers of warp yarns alternate positions, creating a new shed, and this cycle repeats. Traditional looms typically use mechanical methods to control and adjust the warp and weft interlacing pattern to create different designs or patterns on the fabric. Modern air-jet looms often use electronic dobby arms to achieve this, a typical mechatronics product. Its superior performance allows for microcomputer control of fabric patterns, quickly providing various complex weaving designs. This article introduces the working principle of the 2861 air-jet loom and the application of a PLC to construct its electrical control system, specifically the application of a PLC to control the shedding mechanism. For details, please click: Research on the Principle of Air-Jet Looms and PLC Control Systems.