西門子MM440變頻器6SE6440-2UD41-1FB1 380-480V110 KW 無內置濾波器
西門子MM440變頻器6SE6440-2UD41-1FB1 380-480V110 KW 無內置濾波器
380-480V110 KW 無內置濾波器
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S7-1200調用定時器和計數器指令時如何減少背景數據塊的使用
S7-1200調用定時器和計數器指令時如何減少背景數據塊的使用,下面詳細介紹使用方法。
1. 項目新建變量
新建一個項目,在“程序塊”中添加一個新數據塊,本例中添加一個數據塊 DB1,新建 3 個數據類型是 IEC_TIMER 的變量(Timer1、Timer2、Timer3),新建 3 個數據類型是 IEC_COUNTER 的變量(Counter1、Counter2、Counter3),如圖 1 所示。

圖 1 新建變量
2. 調用定時器指令
從基本指令集中將指令 TON 放入程序段 1 中,會提示是否為該指令生成一個背景數據塊,點擊“取消”,如圖 2 所示。

圖 2 調用定時器指令
3. 為定時器指令背景數據塊選擇變量
程序段的指令 TON 上面會有三個紅色的問號,點擊圖中類似文本框的圖標,從下拉列表中選擇“DB1.Timer”,如圖 3 所示。

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