2711P-RP8A
2711P-RP8A
2711P-RP8A
RTU的通訊和標(biāo)準(zhǔn) 由于RTU是專(zhuān)用的器件，現(xiàn)在還沒(méi)有統(tǒng)一的標(biāo)準(zhǔn)，尤其是在通訊方面，通常情況下一個(gè)產(chǎn)家的RTU是不能和另一個(gè)產(chǎn)家的RTU混用的。協(xié)議的轉(zhuǎn)化和競(jìng)爭(zhēng)已經(jīng)形成了一個(gè)產(chǎn)業(yè)。近期中國(guó)自動(dòng)化學(xué)會(huì)專(zhuān)家咨詢(xún)委員會(huì)將向市場(chǎng)發(fā)布RTU的通用標(biāo)準(zhǔn)，這些標(biāo)準(zhǔn)大致包括如下： @ 通信標(biāo)準(zhǔn)DNPs和IEC870。 @ RTU編程標(biāo)準(zhǔn)IEC1131-3。 中央處理器單元可以包含一個(gè)內(nèi)置的或獨(dú)立的modem。這些modems可以通過(guò)無(wú)條件租借的聲音級(jí)電話(huà)線或類(lèi)似的聲道如：微波、無(wú)線電、光纖。也可以用異步串行數(shù)據(jù)端口來(lái)代替modem，來(lái)擴(kuò)展通訊設(shè)備最大可達(dá)36.6Kbaud。 中央處理器連續(xù)的選擇輸入通道將當(dāng)前的狀態(tài)或模擬量和以前的狀態(tài)作對(duì)比。如果模擬量的改變超過(guò)了死區(qū)限，就會(huì)向監(jiān)控中心通知發(fā)生了狀態(tài)改變；如果沒(méi)有改變發(fā)生，一個(gè)簡(jiǎn)短的確認(rèn)信號(hào)會(huì)返回到監(jiān)控中心。所有其他的信息都是在連續(xù)選取信息將交叉存取的，在忽略選取掃描時(shí)間沖突時(shí)，獲得最優(yōu)的響應(yīng)時(shí)間。
RTU（遠(yuǎn)程測(cè)控終端），英文全稱(chēng) Remote Terminal Unit，中文全稱(chēng)為遠(yuǎn)程終端控制系統(tǒng)，負(fù)責(zé)對(duì)現(xiàn)場(chǎng)信號(hào)、工業(yè)設(shè)備的監(jiān)測(cè)和控制。其中包括：開(kāi)關(guān)量輸入單元、開(kāi)關(guān)量輸出單元、模擬量輸入單元、模擬量輸出單元、脈沖量輸入單元、脈沖量輸出單元、數(shù)字量輸入單元。
開(kāi)關(guān)量輸入單元：對(duì)現(xiàn)場(chǎng)各種開(kāi)關(guān)信號(hào)的采集，現(xiàn)場(chǎng)信號(hào)可以是繼電器觸點(diǎn)開(kāi)關(guān)（無(wú)源），也可以是電壓信號(hào)，還可以是電流信號(hào)。由于采用光隔離器件，可以抵抗現(xiàn)場(chǎng)各種干擾，能夠在強(qiáng)電場(chǎng)、強(qiáng)磁場(chǎng)、多塵埃、潮濕環(huán)境下正常工作。
開(kāi)關(guān)量輸出單元：用于遙控遠(yuǎn)端設(shè)備的開(kāi)停、聲光、告警等。
【公 司】： 福建鴻飛達(dá)自動(dòng)化科技有限公司
【主 營(yíng)】： AB(羅克韋爾)PLC全系列、ABB機(jī)器人系統(tǒng)備件、施耐德140/TSX、西門(mén)子6SN/6FC、伺服系統(tǒng)全套等
【價(jià) 格】： 電議
【發(fā)布人】： 程先生
【電 話(huà)】： 15306977024 13625073704
【所在地】： 福建 - 福州
【坐 機(jī)】： 0591-83532940
【Q Q】： 2851617309
【傳 真】： 0591-88263940
【郵 箱】： 2851617309@qq.com
產(chǎn)品價(jià)格以電話(huà)或者QQ詢(xún)價(jià)為準(zhǔn)，發(fā)布價(jià)格不做參考，圖片也一樣
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