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泰山之石
A
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樓主  發(fā)表于: 2020-06-04 09:50
PLC的直流電源0V與外部直流電源的0V之間的電位差有18.3V，兩部分的0V端子接在一起是否有問(wèn)題？因PLC輸入的COM端子就是PLC的直流電源的0V.外部電源作為輸入端子必須接PLC的COM端子啊。目前是接在一起使用中。
honggun
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1樓  發(fā)表于: 2020-06-04 10:21
不行的，最好找出原因。

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