經(jīng)各位提醒解決問(wèn)題啦,謝謝各位啦。把方法發(fā)一下以備有需之人參考:在USB轉(zhuǎn)串口安裝好后,插上轉(zhuǎn)串口查看下轉(zhuǎn)串口COM號(hào)(桌面上右擊“我的電腦”打開(kāi)設(shè)備管理在端口一欄會(huì)顯示單前轉(zhuǎn)串口的COM號(hào)),對(duì)照與PLC所設(shè)定的COM號(hào)和參數(shù);如不同可在電腦端口高級(jí)選項(xiàng)中更改轉(zhuǎn)串口的COM號(hào)與PLC匹配。再次謝謝諸位!