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冷夜的陽(yáng)光
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樓主  發(fā)表于: 2018-06-12 13:22
在S7-200 DC24V 數字量輸出接線(xiàn)中“M”端子接24v負極有沒(méi)有必要，直接把負載負極回24v電源負極不就行了？                                    


                                                                  求大神指導，本人小白！
金丁路德馬
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1樓  發(fā)表于: 2018-06-17 20:23
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