日本不卡一区视频-日本不卡视频一区二区三区-日本不卡视频一区二区-日本不卡高清免费v日本-色国产视频

產品分類

當前位置： 首頁 > 工業電氣產品 > 工業繼電器 > 計時與計數器 > 計數器

類型分類：
科普知識
數據分類：
計數器

西門子s7-200高速計數器檢測信號Q點報警

發布日期：2022-04-17 點擊率：76 品牌：西門子_Siemens

    最近改造用S7200高速計數器，檢測一個信號，300毫秒檢測一個信號，檢測不到，輸出一個Q點報警，望高手指點

    答：可以這樣編程：

    1、將S7-200的高速計數器的計數設置為：連續計數方式，且計滿自動從0計數。輸入的計數脈沖的頻率=1KHz,這樣高速計數器每計1個數的時間=1mS.

    2、用被監測的信號的前沿讀取高速計數器的計數值HC0減去VD0,其差送入VD4,再將HC0值送入VD0.

    3、用VD4（差值）與數“300”比較。如VD4>300,即信號間隔大于300mS,使Q0.0=1.即報警輸出。見下程序：

    主程序：

    

    SBR_0子程序：

    

 

下一篇： PLC、DCS、FCS三大控

上一篇： 索爾維全系列Solef?PV

主站蜘蛛池模板： | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |