1、 1 PLCPLC自动配料系统设计自动配料系统设计 摘摘 要要 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
2、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 2 PLC automatic batching system designPLC automatic batching system design AbstractAbstract there are many kinds of PLC definition. The international electrot
3、echnical 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,
4、 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 exten
5、d 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 bui
6、lt-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 Keywords communication to convey burden to packcommunication to convey burden to pack 3 目录目录 1绪论 5 1.1课题来源及现实意义 5 1.
