HONEYWELL DCS卡件CC-PAIH01 HART Analog Input Module 51405038-175
HONEYWELL DCS卡件CC-PAIH01 HART Analog Input Module 51405038-175
HONEYWELL DCS卡件CC-PAIH01 HART Analog Input Module 51405038-175
工業(yè)現(xiàn)場的環(huán)境比普通環(huán)境都要惡劣,至少在震動,濕氣,溫度上都要比普通環(huán)境惡劣,工業(yè)以太網(wǎng)需要更多專業(yè)的知識和實踐經(jīng)驗。如果你正在安裝或者使用一種工業(yè)以太網(wǎng)(工業(yè)以太網(wǎng)交換機),那么關(guān)于布線、信號質(zhì)量、接地回路、交換機和通訊這五點內(nèi)容必須要了解否則容易出現(xiàn)故障,更使維護(hù)成本上升。
1、布線問題
和所有網(wǎng)絡(luò)一樣,電纜的優(yōu)劣直接影響工業(yè)以太網(wǎng)的優(yōu)劣。而且除了高電磁干擾(EMI),工業(yè)環(huán)境中還經(jīng)常有某種等級的溫度、粉塵、濕度以及其他在家庭和辦公環(huán)境中不常見的影響因素。
所以,如何選擇電纜?在辦公室內(nèi),商業(yè)等級的電纜,例如5類電纜,比較適合于10MB的網(wǎng)絡(luò),而5e類電纜適合于100MB網(wǎng)絡(luò)。根據(jù)ANSI/TIA-1005標(biāo)準(zhǔn)所述,6類電纜或者更好的電纜可以用于工業(yè)環(huán)境中的主機或者設(shè)備連接。
6類電纜能夠在100米的范圍內(nèi)實現(xiàn)1GB網(wǎng)絡(luò),55米范圍內(nèi)實現(xiàn)10GB網(wǎng)絡(luò)。6e類電纜可以在100米范圍內(nèi)實現(xiàn)10GB網(wǎng)絡(luò)。
相比于5類電纜和5e類電纜,6類電纜不易受串?dāng)_和外部EMI噪聲影響。工業(yè)以太網(wǎng)電纜的設(shè)計能夠抵御更加嚴(yán)酷的工業(yè)環(huán)境對電纜的物理侵蝕。在安裝6類電纜時,確保RJ45接口和插座也能夠達(dá)到6類等級。的使用方法是,短距離布線時,使用預(yù)先做好的接插電纜,并在工廠內(nèi)安裝連接器。長距離布線時使用插座。
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