The working process of Guangdong unmanned vending machine

The working process of the Guangdong unmanned vending machine. There are three commodities in the unmanned vending machine: mineral water, bread and juice. A pick-up button is set on the vending machine panel. When the customer presses the pick-up button, it is judged how many coins have been invested according to the logical relationship of the counter What goods should be given? The outlets for different goods are the refund outlets for more than RMB. The logical relationship of shipment is that there is a two-second delay in shipment. After the delay is completed, the four counters are cleared. If the unmanned vending machine does not press the pick-up button 120 seconds after the customer inserts the coin, the system will automatically withdraw the coin. . When the system is shipped (that is, during the delay period), when there is a coin operation, it is regarded as an illegal system to enter the abnormal return procedure, and the coin will be returned after the delivery delay is completed. Y5 is the refund port for abnormal procedures. The unmanned vending machine is the terminal interface that the user directly faces. The main function of the unmanned vending machine is to store and ship the goods. The unmanned vending machine stores the goods for sale in the wireless data exchange. The unmanned vending machine has a wireless communication function and can be docked with the existing GSM/CDMA network. It can accept various wireless communication connections initiated by the network side, and it can also actively initiate a connection to the GSM/CDMA network. Through wireless data exchange, the wireless remote control of the vending machine can be realized, and the current system status and sales situation of the vending machine can be obtained in real time, so as to realize the controllable transaction process of the entire business. First write the PLC control program into the PLC machine and then select the monitoring state to make the PLC in the 'RUN' state, and then press the coin sensor one by one (that is, the coin recognition mechanism uses the reset button signal to indicate the input of the coin) to observe whether the coin value is accumulated ; Or press the select button to observe whether the output indicator light flashes according to the expected effect (that is, the product selection prompt, product delivery, delivery time, and currency refund prompt are displayed), and the operating process of the program, input and output signals, and internal description actually appear through the monitoring status Problems and solutions. It is necessary to check whether the design function can be effectively realized one by one against the design control requirements and to improve and perfect the program. The above knowledge is introduced here, so if you master the above knowledge of Guangdong vending machine, then you will understand it better, and at the same time it will be easier to use. If you have anything you don’t understand, welcome to come! Previous: The research of Guangdong vending machine is mostly limited to the internal structure Next: The organization and function of the vending machine unmanned vending supermarket management system,