YASKAWA SGMGV-30ADC6C
(三)模擬量I/O
????模擬量輸入/輸出接口一般用來(lái)感知傳感器產(chǎn)生的信號(hào)。這些接口可用于測(cè)量流量、溫度和壓力,并可用于控制電壓或電流輸出設(shè)備。這些接口的典型量程為-10~+10V、0~+11V、4~20mA或10~50mA。一些制造廠家在PLC上設(shè)計(jì)有特殊模擬接口,因而可接收低電平信號(hào),如RTD、熱電偶等。一般來(lái)說(shuō),這類接口模塊可用于接收同一模塊上不同類型的熱電偶或RTD混合信號(hào)。
????(四)特殊功能I/O
????在選擇一臺(tái)PLC時(shí),用戶可能會(huì)面臨一些特殊類型且不能用標(biāo)準(zhǔn)I/O實(shí)現(xiàn)的I/O限定(如定位、快速輸入、頻率等)。此時(shí)用戶應(yīng)當(dāng)考慮供銷廠商是否提供有特殊的有助于大限度減小控制作用的模塊。有些特殊接口模塊自身能處理一部分現(xiàn)場(chǎng)數(shù)據(jù),從而使CPU從繁重的任務(wù)處理中解脫出來(lái)。
????(五)智能式I/O
????當(dāng)前,PLC的生產(chǎn)廠家相繼推出了一些智能式的I/O模塊。一般智能式I/O模塊本身帶有處理器,可對(duì)輸入或輸出信號(hào)作預(yù)先規(guī)定的處理,并將處理結(jié)果送入CPU或直接輸出,這樣可提高PLC的處理速度并節(jié)省存儲(chǔ)器的容量。
【誠(chéng)信經(jīng)營(yíng)】【質(zhì)量可靠】【進(jìn)口原裝】【拆包防偽】
【超大庫(kù)存】【當(dāng)天付款】【順豐速運(yùn)】【歡迎搶購(gòu)】
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廈門莫格電氣自動(dòng)化有限公司
張芳(銷售工程師)
電 ?話:0592-6514182/17750626260
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誠(chéng)信經(jīng)營(yíng),質(zhì)量為首,誠(chéng)信至上,莫格電氣竭誠(chéng)為您服務(wù)!
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