中文 2180 字PLC-based control system design vending machineWith highly modern people's lives, all intelligent automated new model is gradually into our daily lives, and more and more vending machines morewidely used, it is to people's lives brought great convenient, and therefore its reliable and stable design, highlights the importance of vending machines are to be completed no vending, optical, mechanical, electrical integration of business automation equipment. Vending machines have not any space restrictions, convenient advantage of can 24h daily sales. For vending machine design a control system with reliable performance, wide voltage range and easy programming, easy to maintain. Vending machine for the automated business representatives are widely used in public places. The traditional vending machine control system using SCM as the control so that not only will do a great job with the ratio of the input and output interfaces and immunity system is relatively poor, it is also very cumbersome to maintain, and expensive. Programmable Logic Controller (PLC) is a combination of computer technology, automatic control technology and communication technology and a new type of industrial control devices developed its high reliability, simple programming, and easy maintenance have been in the field of industrial control vending machines widely used because of the completion of the community as a retail and integrated services independent facilities require it to be reliable structure, high stability and efficiency. Development of PLC and computer technology, semiconductor technology, control is closely related to the development of technology, digital technology, high-techcommunications network technology, the development...
