文档介绍：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
英文题目
ABSTRACT
The present paper design was by the puter - PLC constitution automat supervisory system, this article elaborated automat and the development, as well as it in the domestic and foreign development present situation, has carried on the proof to automat plan, introduced posed, the characteristic as well as the principle of work basically, to carried on a more careful elaboration by the puter - PLC constitution vending machine system overall design process.
Chooses PC machine in the design to take the host workstation on position machine, the lower position machine uses PLC to make the controller, each PLC controller controls a automat subsystem, three PLC controllers respectively be from the workstation 1, from the workstation 2, from the workstation 3, in the article exhaustively introduced the automat various position, and pleted the PLC exterior wiring diagram. In the article has manufactured on the position machine user management contact surface, applies the software carries on to on position machine user management contact surface procedure as well as the host workstation signal piles and debugs; When PLC trapezoidal pilation, in the article uses is Siemens PLC trapezoidal chart special-purpose translation software STEP7 carries on pilation.
The present paper key point places the PLC various hardware part the design and the introduction, the PLC trapezoidal pilation and in the various workstation pilation. Defers to in the overall design process “asks the question, the analysis question, solves the problem” the guiding ideology, has made the careful elaboration to the overall system design work.
PLC; Automat; Ladder logic diagram;
KEY WORDS: PLC; Automat; Ladder logic diagram
目录
前言 1
第1章自动售货机介绍 2
自动售货机功能分析 2
自动售货机的基本功能 2
PLC的选型原