每次OFDT被調(diào)用，它的能流輸入關斷，CV被更新，以反映定時器復位后的總時間。OFDT持續(xù)向右傳送能量到直到CV等于或超過PV。當CV等于或超過PV時，OFDT停止向右傳遞能流到并停止計時。如果PV是0或負數(shù)，第一次能流輸入關閉時被調(diào)用，定時器停止向右傳遞能流。

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Numatics Valve Regulator VS22-04, C22D-04, F22B #16930

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Barber Colman Temperature Control 185 PARTS ONLY #16936

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Reliance 0-51811-1 Voltmeter Tester Card #22289

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