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13问答网 > 西门子s7ˉ200 4～20mA压力信号,

西门子s7ˉ200 4～20mA压力信号,

2025-03-16 09:17:07

推荐回答（1个）

回答1：

很简单的一个问题啊，怎么会做不出来呢，我给你点提示吧
第一步4-20MA的信号是0-32000 你在人机上显示值是10.0Mpa 所以他们的关系应该是320=0.1Mpa .程序任何做呢
模拟量第一个接点,通道地址是AIW0 ,用一个除法运算(DIV I)就可以了.AIW0/320=MW0 结果放在MW0里你把MW0的数据放在屏上显示就可以了,显示的时候要1个小数点,如果没小数点的话要除上3200,不过显示不准确

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