【毕业设计方案】基于软PLC自动售货机控制系统设计方案.docVIP

【毕业设计】基于软PLC的自动售货机控制系统设计 本 科 毕 毕 毕 文毕 毕毕目中文 基于毕 PLC 的自毕毕机控制系毕售 英文 Soft-PLC Control System for Vending Machines 院 学 信息机毕工程院与学 年毕毕毕 08 毕毕工程及其自毕化气 生姓名 学 朱佳琪 学号 080145057 指毕毕 教 毕永毕 完 成 日 期 2012年 4月摘要 自毕毕机在今被普遍地毕用在各大毕代化都市的街道及便利店售当 中正逐毕地成毕商毕自毕化的代表性毕毕。能毕在无人操作的情下根它况 据程序自毕地毕商品。自毕毕机不受工作毕毕及地点限制的特点售售,使其毕 毕了一毕提高毕毕毕的同毕又降低了成本的毕模式。售 毕PLC是一毕基于PC机毕毕毕的控制系毕和毕毕构它PLC一毕具有在 功能、可性、速度、故障毕等方面的毕点。利用毕件技毕可以毕准靠找将 的工毕PC毕毕成全功能的PLC毕程控制器。 本文介毕了自毕毕机的毕及前景以及毕售状PLC的基本原理及功 能。利用德倍福公司的嵌入式国PC和I/0模毕及基于PC的自毕化控 制技毕毕毕了自毕毕机的售PLC控制系毕。程序以符合IEC61131-3毕准的 毕文本构体ST及毕毕功能毕CFC作毕毕程毕言。包含了商品毕毕、找 零毕算、后台管理毕毕毕等毕用功能。售 毕毕毕自毕毕机倍福自毕化毕售PLC嵌入式PC毕文本构体 毕毕功能毕PLC控制 Abstract In recent times, vending machines are widely used at roadsides and in conveniences stores in each modernize cities, and they are gradually becoming typical devices of Business Automation. Without human beings’ control , a vending machine can sale goods automatically according its program inside. Vending machines’ working can be not limited by time and place, so these features make it possible to develop a new sales model which can not only increase turnover but also reduce cost as well. The Soft- PLC is a control system based on PC development structure, it has same characteristics like functionality, reliability, speed, fault-finding and others as a traditional PLC , the use of software technology can convert a standard industrial PC into a fully functional PLC process controller. This article describes the present situation and prospects of the vending machine, as well as the basic principle of the soft PLC and its function. Using Germany Beckhoff Embedded PC, I / 0 modules , and PC-based automation technology to design a PLC control system of a vending machine. The program meet the standard of IEC61131-3, and use the Structure Text (ST) and the Continuous Function Chart (CFC) as programming la