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1989xpp
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樓主  發(fā)表于: 2015-07-08 08:54
西門(mén)子200的plc使用高速計數器hsc0，接收的頻率低會(huì )計數嗎？      
              對接收的頻率有什么要求嗎？求高手指點(diǎn)一下
hafatahaha
臺達代理
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1樓  發(fā)表于: 2015-07-08 09:12
只有最高，沒(méi)有最低，因為輸入光耦有最短導通時(shí)間，一旦低于這個(gè)值就沒(méi)辦法識別。
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