浙江6ES7417-4HT14-0AB0專修CPU進水搶修
浙江6ES7417-4HT14-0AB0專修CPU進水搶修西門子S7-300/400的計(ji)(ji)數(shu)(shu)(shu)器數(shu)(shu)(shu)量決定于所選擇的PLC CPU模塊,計(ji)(ji)數(shu)(shu)(shu)的形式可以分為(wei)(wei)“加計(ji)(ji)數(shu)(shu)(shu)“、“減計(ji)(ji)數(shu)(shu)(shu)“與(yu)(yu)“加減計(ji)(ji)數(shu)(shu)(shu)“3類(lei),計(ji)(ji)數(shu)(shu)(shu)原理(li)與(yu)(yu)方法同S7-200 PLC。計(ji)(ji)數(shu)(shu)(shu)輸入(ru)信號為(wei)(wei)上升沿有(you)效。
S7-300/400的計(ji)(ji)數(shu)(shu)(shu)器有(you)單獨的“置(zhi)數(shu)(shu)(shu)“控(kong)(kong)制(zhi)(zhi)端(duan)(duan)S與(yu)(yu)復位控(kong)(kong)制(zhi)(zhi)端(duan)(duan)R。只有(you)當“置(zhi)數(shu)(shu)(shu)“控(kong)(kong)制(zhi)(zhi)端(duan)(duan)S為(wei)(wei)“l“時(上升沿有(you)效),設定值才(cai)能被寫入(ru)計(ji)(ji)數(shu)(shu)(shu)器
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2024-03-28 - 02
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