2711P-B12C1D6
2711P-B12C1D62711P-B12C1D6缺點:響應(yīng)滯后,降低系統(tǒng)的響應(yīng)速度。
輸入/輸出滯后時間又稱為系統(tǒng)響應(yīng)時間。
1)輸入模塊滯后時間:輸入模塊RC濾波電路的時間常數(shù),典型值為10ms左右。
2)輸出模塊滯后時間
繼電器型輸出:10ms左右;
晶閘管型輸出:通電滯后時間約1ms,斷電滯時的最大滯后時間10ms;
晶體管型輸出:1ms以下。~~~~~~~~~~~~~~~~~~~~~~~~~~~~
公司 名稱:廈門泰尼電氣有限公司
固定 電話:0592-6809819
聯(lián) 系 人:張亮
傳 真:0592-6890859【請備注“張亮”收】
商 務(wù) Q Q: 2314094943
手 機:18030028083
Q Q 郵 箱:2314094943@qq.com
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公司地址:廈門市海滄區(qū)海滄街道濱湖一里7號2008室
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3)掃描工作方式引起的滯后時間最長可達兩個掃描周期。
PLC總的響應(yīng)延遲時間一般為幾十ms。
但由于PLC的掃描速度極快,故對一般工業(yè)控制而言,此響應(yīng)上的滯后完全允許。
注:在中、大型PLC中所需處理的I / O點數(shù)較多,用戶程序較長,還采用分時分批的掃描方式或中斷等的工作方式,以縮短循環(huán)掃描的周期和提高實時控制。B80N140L1
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