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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... 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,并通过数字的、模拟的输入和输出,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。
送料工人收到每天的生产作业表后, 将依次对每种原料进行取料送到各个工位。在这个过程中工人工作繁重生产数据无纪录不能保证企业的生产工艺。文中以PC机编程,可编程逻辑控制器(PLC),现场总线技术等现代工控技术为基础,开发了以PC机为上位机, 以PLC作为下位机的自动送料系统。在整个生产过程中,一旦生产计划制定完成,计算机将按照计划对每种原料进行运送,不再需要人工来干预。在这个过程中由计算机通过各工位点发来的数据校核,减轻了工人的工作负担,提高了工作效率。

关键词:通信,传送,故障
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2010-05-01
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There are many kinds of definition of PLC. The international electrotechnical commission (IEC) of PLC programmable controller is defined, is a kind of arithmetic operations, designed for electronic system applied in industrial environment. It adopts the programmable CunZhuQi, used in its internal storage execution sequence control and logical operations, timing, counting and arithmetic operation instruction, and through the digital simulation, the input and output, the control of various types of machinery or production process. Programmable controller and related equipment, should press easily and industrial control system as a whole, easy to expand its function design principles.
With the function of PLC network communication, it makes the PLC and PLC, PLC and computer and other devices to exchange information between intelligence, form a unified whole, decentralized control. Most PLC with RS - 232 interface, and some have built-in support their communication protocol interfaces.
Feeding workers receive daily production scheduling, will turn to each feedstock to each workstation feeding. In this process is working hard production data record cannot guarantee the production process. The enterprise with PC programming, the programmable logic controller (PLC), fieldbus technology, modern industrial technology is developed, based on PC for PC and PLC as in the automatic feeding system. In the whole production process, once the production plan according to the plan, the computer will be completed for each raw materials for transport, no longer need to manually. In this process by computer through each stage of data, burn reduced working burden, improve the working efficiency

Keywords: communication, transmit, fault
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There are many kinds of definition of PLC. The international electrotechnical commission (IEC) of PLC programmable controller is defined, is a kind of arithmetic operations, designed for electronic system applied in industrial environment. It adopts the programmable CunZhuQi, used in its internal storage execution sequence control and logical operations, timing, counting and arithmetic operation instruction, and through the digital simulation, the input and output, the control of various types of machinery or production process. Programmable controller and related equipment, should press easily and industrial control system as a whole, easy to expand its function design principles.
With the function of PLC network communication, it makes the PLC and PLC, PLC and computer and other devices to exchange information between intelligence, form a unified whole, decentralized control. Most PLC with RS - 232 interface, and some have built-in support their communication protocol interfaces.
Feeding workers receive daily production scheduling, will turn to each feedstock to each workstation feeding. In this process is working hard production data record cannot guarantee the production process. The enterprise with PC programming, the programmable logic controller (PLC), fieldbus technology, modern industrial technology is developed, based on PC for PC and PLC as in the automatic feeding system. In the whole production process, once the production plan according to the plan, the computer will be completed for each raw materials for transport, no longer need to manually. In this process by computer through each stage of data, burn reduced working burden, improve the working efficiency
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There are many definitions of PLC. International Electrotechnical Commission (IEC) is defined on the PLC: Programmable Logic Controller is a digital computing operation of electronic systems for the industrial environment applications. It uses programmable memory, used in its internal storage implementation of the logical, sequential control, timing, counting and arithmetic instructions such as operation and, through digital, analog input and output, the control of various types machinery or production processes. Programmable logic controller and related equipment, all with the industrial control system should be easy to form a whole, easy to extend the principle of functional design.
PLC network with communication functions, it allows between PLC and PLC, PLC and host computer, and other smart devices to exchange information, form a unified whole, dispersed centralized control. Most PLC with RS-232 interface, there are some built-in support for their own communication protocol interface.
Workers receive a daily feed of production operations listed below, followed by pairs of each Yuanliaojinhang Quliao sent Ge Ge Gong bit. In this process, heavy manufacturing workers Gong Zuo Shu Ju Wu record companies can not Bao Zheng's production of Gongyi. Text in order to PC Ji Bian Cheng , programmable logic controllers (PLC), field bus technology based on modern industrial techniques developed for the PC to PC, to PLC as the next bit machine automatic feeding system. in the entire production process, once the production plan developed complete, the computer will be as planned for each delivery of raw materials,
Not need to interfere manually. In this process, by computer, through the work site data sent by check, to reduce the workload of the workers and improve working efficiency.
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