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二郎神
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樓主  發(fā)表于: 2019-09-28 16:20
圖片：
圖片：
想用VB通訊三菱PLC置位Y0為ON
先用串口助手測試可以通訊，Y0被置位了。
但在VB中發(fā)送同樣的字符串卻不行，不知道是怎么回事。
請熟悉VB與PLC通訊的高手指點(diǎn)一下。
sjbandmm
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1樓  發(fā)表于: 2019-09-28 17:38
串口助手發(fā)送的是HEX格式，VB發(fā)送的ASCII格式。VB需要轉換。
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