Design of vending machine based on PLC

With the development of society, more and more convenient things appear in this world, vending machine is one of them. Therefore, this paper designs a simple vending machine control system with Kingview as the upper computer monitoring screen and PLC as the lower machine. The simple vending machine calculates the sum of money and displays it on the premise that the currency has been input. According to the amount of money, the information about the goods that can be sold is provided to the user through the selection button indicator, and the user can choose the goods he wants to buy independently. When the money invested is enough to buy drinks, the user presses the button corresponding to the selected commodity to realize the vending machine transaction.