| 詳細(xì)參數(shù) | |||
|---|---|---|---|
| 品牌 | PROSOFT | 型號(hào) | MVI71-DFCM |
| 結(jié)構(gòu)形式 | 模塊式 | 安裝方式 | 控制室安裝 |
| LD指令處理器 | 硬PLC | 功能 | 網(wǎng)絡(luò)接口模塊 |
| 工作電壓 | 5VDC,5% | 輸出頻率 | 1100mA,最大值 |
| 處理速度 | 10Mbit/s,200Datasets/s | 產(chǎn)品認(rèn)證 | UL |
| 環(huán)境溫度 | -40°C至85°C | 環(huán)境濕度 | 5%至95%（無(wú)冷凝） |
| 加工定制 | 否 | 產(chǎn)地 | 美國(guó) |
工作速度是指PLC的CPU執(zhí)行指令的速度及對(duì)急需處理的輸入信號(hào)的響應(yīng)速度。工作速度是PLC工作的基礎(chǔ)。速度高了，才可能通過(guò)運(yùn)行程序?qū)崿F(xiàn)控制，才可能不斷擴(kuò)大控制規(guī)模，才可能發(fā)揮PLC的多種多樣的作用。
PLC的指令是很多的。不同的PLC。指令的條數(shù)也不同。少的幾十條，多的幾百條。指令不同，執(zhí)行的時(shí)間也不同。但各種PLC總有一些基本指令，而且各種的PLC都有這些基本指令，故常以執(zhí)行一條基本指令的時(shí)間來(lái)衡量這個(gè)速度。這個(gè)時(shí)間當(dāng)然越短越好，已從微秒級(jí)縮短到零點(diǎn)微秒級(jí)。并隨著微處理器技術(shù)的進(jìn)步，這個(gè)時(shí)間還在縮短。
執(zhí)行時(shí)間短可加快PLC對(duì)一般輸入信號(hào)的響應(yīng)速度。從討論P(yáng)LC的工作原理知，從對(duì)PLC加入輸入信號(hào)，到PLC產(chǎn)生輸出，最理想的情況也要延遲一個(gè)PLC運(yùn)行程序的周期。因?yàn)镻LC監(jiān)測(cè)到輸入信號(hào)，經(jīng)運(yùn)行程序后產(chǎn)生的輸出，才是對(duì)輸入信號(hào)的響應(yīng)。 不理想時(shí)，還要多延長(zhǎng)一個(gè)周期。當(dāng)輸入信號(hào)送入PLC時(shí)，PLC的輸入刷新正好結(jié)束，就是這種情況。這時(shí)，要多等待一個(gè)周期，PLC的輸入映射區(qū)才能接受到這個(gè)新的輸入信號(hào)。對(duì)一般的輸入信號(hào)，這個(gè)延遲雖可以接受，但對(duì)急需響應(yīng)的輸入信號(hào)，就不能接受了。對(duì)急需處理的輸人信號(hào)延遲多長(zhǎng)時(shí)間PLC能予以響應(yīng)，要另作要求。
Industrial control automation technology is a comprehensive technology that uses control theory, instruments, computers and other inbation technologies to detect, control, optimize, dispatch, manage and make decisions on industrial production processes, so as to increase output, improve quality, reduce consumption and ensure safety. It mainly includes industrial automation software, hardware and system. As one of the most important technologies in the field of modern manufacturing in the 20th century, industrial control automation technology mainly solves the problems of production efficiency and consistency.
Although the automation system itself does not directly create benefits, it can significantly improve the production process of enterprises. The development path of industrial control automation in China is mostly digestion and absorption while introducing complete sets of equipment, and then secondary development and application. At present, China's industrial control automation technology, industry and application have made great development, and China's industrial computer system industry has been bed. At present, industrial control automation technology is developing towards inbligence, networking and integration.
