例如，如果一個(gè)程序塊中的一一個(gè)定時(shí)器被復(fù)位，該程序塊四分鐘不被調(diào)用(非活動的)，當(dāng)程序塊被調(diào)用時(shí)，四分鐘時(shí)間已經(jīng)累積進(jìn)去。如果使能輸入關(guān)閉，這四分鐘被應(yīng)用到定時(shí)器中(也就是說，CV設(shè)為4分鐘)。量程是0到+32,767時(shí)間單位。這個(gè)定時(shí)器的狀態(tài)在失電時(shí)保持不變，上電時(shí)不自動初始化。當(dāng)ONDTR第一-次接收能流，ONDTR開始計(jì)時(shí)(當(dāng)前值CV)。

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