上海西門子TP37觸摸屏開不了機快速維修
上(shang)(shang)海(hai)(hai)西門(men)子(zi)TP37觸摸屏開不了機快速維修上(shang)(shang)海(hai)(hai)西門(men)子(zi)TP37觸摸西門(men)子(zi)S7-300/400的計(ji)數(shu)(shu)(shu)器(qi)(qi)數(shu)(shu)(shu)量決定(ding)于所選(xuan)擇的PLC CPU模塊,計(ji)數(shu)(shu)(shu)的形(xing)式可以分為(wei)“加計(ji)數(shu)(shu)(shu)“、“減(jian)計(ji)數(shu)(shu)(shu)“與(yu)“加減(jian)計(ji)數(shu)(shu)(shu)“3類,計(ji)數(shu)(shu)(shu)原(yuan)理與(yu)方法同S7-200 PLC。計(ji)數(shu)(shu)(shu)輸入(ru)信(xin)號(hao)為(wei)上(shang)(shang)升(sheng)沿(yan)有(you)效。
S7-300/400的計(ji)數(shu)(shu)(shu)器(qi)(qi)有(you)單獨的“置(zhi)數(shu)(shu)(shu)“控制(zhi)端S與(yu)復位控制(zhi)端R。只有(you)當“置(zhi)數(shu)(shu)(shu)“控制(zhi)端S為(wei)“l“時(上(shang)(shang)升(sheng)沿(yan)有(you)效),設定(ding)值(zhi)才能被寫入(ru)計(ji)數(shu)(shu)(shu)器(qi)(qi)
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2024-03-28 - 02
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