外文翻譯--plc控制系統(tǒng)設(shè)計(jì)的要點(diǎn)-plc設(shè)計(jì)(完整版)
【正文】 mers and counters. The same is true for a person with a digital logic background. For persons unfamiliar with ladder diagrams or digital principles, howere, the learning process takes more time. A person knowledgeable in relay logic can master advanced PLC functions in a few days with proper instruction. Company schools and operating manuals are very helpful in mastering these advanced functions. Advanced functions in order of learning might include sequence/drum controller, register bit use, and more functions. Following are 8 major advantages of using a programmable controller. ① Flexibility. In the past, each different electronically controlled production machine required own controller。 At the same time, some manufacturers of individual products do not support the expansion module directives, in software development, we must pay attention to. When using such simulation module temperature, some of the manufacturers, see related technical manuals. Many types of panies expansion modules, such as singleinput modules, single output modules, input output modules, temperature modules, highspeed input module. This modular design Plc product development provided for the convenience of users. When using a Plc work design, its much more difficult to control than single Plc. First you should choose their own more familiar type, its basic instructions and a more indepth understanding of the functional mands, and the speed and direction of the implementation of storage capacity users should also be careful about the procedure. Otherwise, you can not adapt to the realtime requirements, resulting in the collapse of the system. In addition to munications interfaces, munication protocols, data transmission speed should also be considered. Finally, we must seek to Plc businessmen work design and software technical support and detailed technical information for the selection of several workstations in your system size. In the preparation of the software, should first bee familiar with the use of Plc software products specification, the question skilled later programming. If using graphical programming device or software package programming may direct programming, if using handheld programming device programming, should be painted Trapezoid Chart before programming, so can less mistakes speed was fast. After the first air conditioning programming procedures to be normal functioning of all, again in equipment debugging. PLC 控制系統(tǒng)設(shè)計(jì)的要點(diǎn) 可編程序控制器 (可設(shè)計(jì)的控制器 ) 本來(lái)應(yīng)簡(jiǎn)稱個(gè)人計(jì)算機(jī)，為了與個(gè)人計(jì)算機(jī)的簡(jiǎn)稱個(gè)人計(jì)算機(jī)相區(qū)別 ,一般將它簡(jiǎn)稱為 PLC(可設(shè)計(jì)的邏輯控制器 )。 微 PLC 數(shù)年以前進(jìn)入了市場(chǎng)，一些人認(rèn)為這些裝置 降到最低點(diǎn) 。重新規(guī)劃程序的 PLC 鍵盤(pán)代替了大量電線，繼電器 , 定時(shí)器的配線和其他的元件 .新的 PLC 讓轉(zhuǎn)換時(shí)間變成大約幾天。 PLC 的市場(chǎng)已經(jīng)從 1978 年八千萬(wàn)元開(kāi)始到 1990 年以每年十億元的幅度增長(zhǎng)而且仍然正在增加。 學(xué)校和操作手冊(cè)在掌握這些先進(jìn)的功能方面非常有幫助。 當(dāng)改變一個(gè) PLC 編程線路或序列設(shè)計(jì)的時(shí)候 , PLC 編程能在數(shù)分鐘內(nèi)從鍵盤(pán)序列中改變。 增加的技術(shù)濃縮較多的功能為較小的和不貴的包。當(dāng)他們被激活時(shí)，邏輯路徑在熒屏上顯示。 PLC 編程被一個(gè)電學(xué)家或技術(shù)人員在梯型圖中完成。不同的負(fù)載選用不同的輸出方式，對(duì)系統(tǒng)的穩(wěn)定運(yùn)行是很重要的 。 用 IBM 個(gè)人計(jì)算機(jī)加 PLC 軟件包編程，這種方式是效率最高的一種方式，但大部分公司的 PLC開(kāi)發(fā)軟件包價(jià)格昂貴，并且該方式不易于現(xiàn)場(chǎng)調(diào)試。 當(dāng)用 PLC 進(jìn)行網(wǎng)絡(luò)設(shè)計(jì)時(shí)，其難度比 PLC 單機(jī)控制大得多。 。否則，不能適應(yīng)你的實(shí)時(shí)要求，造成系統(tǒng)崩潰。 ⑤ 盡量選用大公司的產(chǎn)品其質(zhì)量有保障，且技術(shù)支持好，一般售后服務(wù)也較好，還有利于你的產(chǎn)品擴(kuò)展與軟件升級(jí)。目前還未發(fā)現(xiàn)各公司之間完全兼容的產(chǎn)品。 在現(xiàn)代化的工業(yè)生產(chǎn)設(shè)備中，有大量的數(shù)字量及模擬量的控制裝置，例如電機(jī)的起停，電磁閥的開(kāi)閉，產(chǎn)品的計(jì)數(shù)，溫度、 壓力、流量的設(shè)定與控制等，工業(yè)現(xiàn)場(chǎng)中的這些自動(dòng)控制問(wèn)題，若采用 可編程序控制器（ PLC）來(lái)解決自動(dòng)控制問(wèn)題已成為最有效的工具之一，本文敘述 PLC 控制系統(tǒng)設(shè)計(jì)時(shí)應(yīng)該注意的問(wèn)題。 先進(jìn)的 PLC 系統(tǒng) , 對(duì)于每個(gè)可能的故障都能描述其操作信息。 ⑤容易調(diào)試。 ③大量的接觸器。 以下是使用一個(gè)可
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