點擊圖片查看大圖YASKAWA SGMJV-02AAA61
（三）模擬量I/O
????模擬量輸入/輸出接口一般用來感知傳感器產(chǎn)生的信號。這些接口可用于測量流量、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)計有特殊模擬接口，因而可接收低電平信號，如RTD、熱電偶等。一般來說，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。
????（四）特殊功能I/O
????在選擇一臺PLC時，用戶可能會面臨一些特殊類型且不能用標(biāo)準(zhǔn)I/O實現(xiàn)的I/O限定（如定位、快速輸入、頻率等）。此時用戶應(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)場數(shù)據(jù)，從而使CPU從繁重的任務(wù)處理中解脫出來。
????（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，可對輸入或輸出信號作預(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)省存儲器的容量。
【誠信經(jīng)營】【質(zhì)量可靠】【進(jìn)口原裝】【拆包防偽】
【超大庫存】【當(dāng)天付款】【順豐速運】【歡迎搶購】
**********************************************************
廈門莫格電氣自動化有限公司
張芳（銷售工程師）
電 ?話：0592-6514182/17750626260
Q ? ?Q：177763184
郵 ?箱：177763184@qq.cm
傳 ?真：0592-6514751
網(wǎng)址：http://www.mogget.cn
誠信經(jīng)營，質(zhì)量為首，誠信至上，莫格電氣竭誠為您服務(wù)！
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NEW FMC
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