Flower style water fountain is a product of combination of garden architecture and flower style ornamental in recent years. With the rapid development of PLC in our country, the control requirements of fancy fountain are higher and higher, which makes more and more control parts need PLC. Using PLC to control fancy fountain has the advantages of convenient use, reliable operation and simple control program design. Programming with ladder diagram can make the design idea clear and programming simple. If it is necessary to change the spray pattern and spray time, the design scheme does not need to be greatly adjusted. As long as the control program is modified accordingly, the control purpose can be achieved. This design takes the 4-ring fancy fountain as the research object, and adopts the Mitsubishi FX2N-32MR series programmable controller as the fountain controller. This paper analyzes the overall function of the control system of the fancy water spray pool, and expounds the composition and working principle of the programmable controller. At the same time, it puts forward the hardware modules of the spray pool and the detailed design scheme of the hardware modules. The design improves the control quality of the fountain system and meets the requirements of real-time control.<br>
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