基于工业以太网的自控系统应用

分析工业以太网在工厂自控系统中应用的可行性,介绍其网络结构与组成,举例说明基于工业以太网的自控系统设计。     

浅析工业以太网及其在冶金自动化系统中的应用

随着以太网技术的迅猛发展,工业以太网在工业控制领域扮演着越来越重要的角色。工业以太网已成为自动化控制技术和信息网络技术相结合的现代自动化设备的标识性技术。本文通过追溯工业以太网产生的原因,论述工业以太网技术特点以及在工业控制上的应用。     

工业以太网应用分析

作者对目前工业以太网的发展进行了讨论.指出工业以太网的优势的同时,分析了工业以太网应用面临的一些问题,并讨论了当前工业以太网的实际应用途径.     

工业以太网技术及其发展

本文介绍了以太网进入工业控制领域的必然性及其优势;分析了工业以太网在控制领域应用中存在的问题及其改进措施;阐述了工业以太网的应用方式和发展前景.     

PCS7控制系统在安钢15万t焦油加工中的应用

安阳钢铁集团公司焦化厂15万t焦油加工是安钢重点技改项目之一,于2005年2月28日正式投产。15万t焦油加工控制系统采用的DCS为西门子PCS7控制系统。该PCS7控制系统由工程师/操作员工作站、控制站和冗余的控制网络组成,冗余的设计提高了系统的安全可靠性。西门子的PCS7通信系统采用的是工业以太网和Profibus-DP现场总线。工业以太网用于系统站之间的数据通信,控制站与操作员站及工程师站之间配备了2台工业交换机ESM,并采用冗余环形高速工业以太网。控制站与现场I/O之间采用了冗余Profibus-DP现场总线,用于现场控制及检测采集单元的…     

以太网技术在工厂中的应用

阐述了以太网的技术特点，并根据工厂使用工业以太网的经验．重点对以太网应用于工业现场所面临的问题和采取的应对措施进行了说明。     

浅谈以太网技术在工业控制领域的应用

介绍了工业以太网技术在烧结、转炉、焦化等生产线的应用情况。主要对以太网通讯技术在准确性与实时性、可互操作性、稳定性与可靠性、抗干扰性、本质安全性等方面特点来说明工业以太网能够满足工业现场恶劣环境、技术优势、解决方案。     

西门子工业网络在薄带机组上的应用

介绍在某薄带机组控制系统中利用西门子工业网络实现其各分子系统的数据交换,综述了西门子工业通讯网络的配置方法。重点介绍了西门子工业网络组成构架、硬件配置及编程要点,提出了系统中包含的西门子工业以太网、PROFIBUS-DP、网络读写等通讯协议出现的问题及解决方法。调试后的网络达到了很好的应用效果。     

梅钢连续热镀锌机组退火炉仪表自动控制

梅钢冷轧厂热镀锌退火炉自动化系统由ET200站、工业以太网、现场总线、工程师站和操作员站组成.阐述了退火炉的自动化系统配置和控制功能,重点介绍了双交叉限幅控制在退火炉中的应用.     

工业以太网及其应用

介绍了工业以太网与普通办公以太网的区别及其在应用中存在的问题。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.