I ' ll present two simple driver sample programs as well : one for dealing with a pio device and one for dealing with a bus - mastering dma device 我還給出了兩個簡單的驅(qū)動程序例子:一個用于pio設(shè)備,一個用于總線主控的dma設(shè)備。
On basis of the development of modern control technology and apply of the network technology and locale bus - mastering technology , this text analyzes the essential element for produce of wire - roll mill : principle of assign for speed ; expatiates in detail on the network structure and communication protocol of ethernet and profibus - dp ; concretely describes the forms of control system configuration , the function and features of its software and hardware designs ; also , introduces mainly control function of control system , , for example , sequence control 、 loop control 、 fly shear control and operation and monitor function etc 基于現(xiàn)代控制技術(shù)的發(fā)展、網(wǎng)絡(luò)技術(shù)以及現(xiàn)場總線技術(shù)的應(yīng)用,本文分析了線材生產(chǎn)的基本要素:速度的分配原則;分析了工業(yè)以太網(wǎng)ethernet和現(xiàn)場總線profibus - dp的結(jié)構(gòu)和通訊協(xié)議。主要說明plc控制系統(tǒng)的組織結(jié)構(gòu)形式,系統(tǒng)的軟硬件設(shè)計的功能和特點。同時,詳細介紹了控制系統(tǒng)的主要控制功能,如邏輯控制、活套控制、飛剪控制以及操作監(jiān)控功能等等。
On basis of the development of modern control technology and apply of the network technology and locale bus - mastering technology , the paper analyzes the essential element of slab caster system : casting speed ; expatiates in detail on the network structure and communication protocol of ethernet and profibus - dp ; mainly describes the forms of control system configuration , the function and features of its software and hardware designs ; also , introduces mainly control function of control system , for example , sequence control , tracking system and operation and monitor function etc . and analyzed and settled the problems of control system in debugging and producing 根據(jù)傳統(tǒng)的控制系統(tǒng)存在的一些不完善的問題,基于現(xiàn)代控制技術(shù)的發(fā)展、網(wǎng)絡(luò)技術(shù)以及現(xiàn)場總線技術(shù)的應(yīng)用,從多方面考慮,決定控制層采用siemens的s7 - 400plc ,現(xiàn)場采用遠程i / o單元,很好的解決了信號量大而又分散的問題。針對生產(chǎn)工藝和機械設(shè)備的控制要求,設(shè)計了齊全的操作模式和方式,分析了板坯連鑄系統(tǒng)的基本要素:拉矯速度(澆鑄速度) ;根據(jù)控制功能的分配及實現(xiàn),主要說明了plc控制系統(tǒng)的組織結(jié)構(gòu)形式,系統(tǒng)的軟硬件設(shè)計的功能和特點。
The profibus - dp bus - mastering network of the system researched in this article was constructed which adopts plc300 as main site and the module of em277 date bus mating with plc200 as subordinate site , through the hardware station construction and the software configuration realized the network communication , and edited the master site procedure to realize controlling subordinate sites , then the master station procedure has been carried on simulation running and debugging 本文研究的系統(tǒng)構(gòu)建了一個以西門子公司的s7 - 300plc為主站、以s7 - 200plc配合em277總線模塊作為從站的profibus - dp總線控制網(wǎng)絡(luò),通過硬件建站、軟件組態(tài)來實現(xiàn)網(wǎng)絡(luò)的通訊,并編輯主站程序?qū)崿F(xiàn)了對從站的控制,然后對主站程序進行了仿真運行和調(diào)試。