Based plc snack vending system application methods

The present invention discloses a system and method for vending application of PLC-based snack, snack vending system based on PLC, including PLC controller, drive motor, lunch boxes classified library, conveyor belts, lifting means and microwave heating means; the PLC controller receives said snack purchase information sent by the user, the PLC controller control information for later classification snack meal snack library according to the selected transmission belt into the snack, snack PLC transmits the driving motor is fed on the belt lifting means, the lifting means to the microwave heating apparatus snack. Snack vending achieved according to user selection, to the advantage of the user and automatically heated.