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iftengfree
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樓主  發(fā)表于: 2019-06-29 09:43
沒(méi)有現成的通訊線(xiàn)，所以就自己做了一條，plc側端口是梯形9針母頭（2,3,5號腳），屏側是梯形9針公頭（6,9,5號腳），RS232通訊，我在屏的設置是：COM1，19200，E,7，1，但是顯示通訊不上，波特率改成9600也不行，改成COM2也不行，請問(wèn)大神屏側該怎么設置，硬件連接應該沒(méi)問(wèn)題吧
langui
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1樓  發(fā)表于: 2019-06-29 09:55
是你線(xiàn)沒(méi)接對，9針那邊不是235，那是232的接法。應該是5條線(xiàn)，詳細接法你去度娘或威綸通官網(wǎng)看看

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