自动售货机PLC设计毕业论文.doc

自动售货机的PLC系统设计
摘要: 本文介绍了自动售货机的基本原理以及工作流程,然后以一次交易过程为例,把交易过程分为几个程序块,然后分别对程序块进行编程。具体说明了可编程序控制器在自动售货机中的作用。程序涉及到了自动售货机工作的绝大部分过程。利用PLC控制的自动售货机提高了系统的稳定性,保证自动售货机能够长期稳定运行。
关键词自动售货机;可编程序控制器;梯形图
Abstract: This article introduced vending machine's basic principle as well as the work flow, then take a transaction process as examples, divides into several blocks the transaction process, then carries on the programming separately to the block. Explained the programmable controller's in vending machine function specifically. The procedure involved the vending machine work major part process. Enhanced system's stability using the PLC control's vending machine, the guarantee vending machine has been able the long-term stability movement.
key word vending machine; Programmable controller; Trapezoidal chart
目录
·绪论......................................................................1
·1自动售货机的介绍………………………………………………………………………….. 4
·………………………………………………………………………4
·……………………………………………………………........5
PLC的基本结构及原理................................................................................................. ... 5
· PLC的选型原则……………………………………………………………………………5
·2PLC系统设计……………………………………………………………………………….. .7
·………………………………………………………7
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·3自动售货机PLC程序设计…………………………………………………………………..10
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·4结束语…………………………………………………………………………………