(PLC自动配料系统设计.doc

PLC自动配料系统设计 摘 要 PLC的定义有许多种。国际电工委员会（IEC）对PLC的定义是：可编程控制器是一种数字运算操作的电子系统，专为在工业环境下应用而设计。它采用可编程序的存贮器，用来在其内部存贮执行逻辑运算、顺序控制、定时、计数和算术运算等操作的指令，并通过数字式、模拟式的输入和输出，控制各种类型的机械或生产过程。可编程序控制器及其有关设备，都应按易于与工业控制系统形成一个整体，易于扩充其功能的原则设计。PLC具有通信联网的功能，它使PLC与PLC 之间、PLC与上位计算机以及其他智能设备之间能够交换信息，形成一个统一的整体，实现分散集中控制。多数PLC具有RS-232接口，还有一些内置有支持各自通信协议的接口。配料工人收到每天的生产作业表后, 将依次对每种原料进行称重?根据配料的多少, 先计算每种成分的重量,然后在各种成分的料桶中取料,传送到电子称上进行称重,最后进行包装。 关键词 通信 传送 配料 包装 PLC automatic batching system design Abstract there are many kinds of PLC definition. The international electrotechnical commission (IEC) is defined as of PLC programmable controller is a kind of digital computing operations, specially designed for the electronic system in industrial environment application and design. It USES programmable CunZhuQi, used in its internal storage to perform the logic operation, sequence control, timing, counting and arithmetic operation instruction, andthrough digital, analog input and output, the control various types ofmachinery or production process. Programmable controller and related equipment, should press easy and industrial control system as a whole, easy to extend its function principle design. PLC with communication networking function, it makes PLC and PLC, between the PLC and the PC and other intelligent equipment to exchange information between, forming a unified whole, realize scattered centralized control. Most PLC has RS - 232 interface, and some built-in have to support their communication protocol interfaces. Ingredients workers receive daily production scheduling, will in turn for each feedstock. According to how much weighing ingredients, first calculated the weight of each component in various components, and then the material barrels material taking, to electronic says on the packaging weighing and. Keywords communication to convey burden to pack 目录 1绪论 5 1.1课题来源及现实意义 5 1.1.1课题来源 5 1.1.2 现实意义 5 1.2设计任务与总体方案的确定 5 1.2.1设计任务 5 1.2.2总体设计方案的确定 5 2 PL