网线转232 网线水晶头RJ45转9孔COM口RS232 如何接法？
\u5173\u4e8eRS232\u63a5\u53e3\u548c\u7f51\u7ebf\u7684\u5173\u7cfb1\u3001\u5982\u56fe\u6240\u793a\uff1a
2. \u6309\u7167\u56fe\u4e8c\u63a5\u7ebf\uff1a
3\u3001COM\u53e3\u516c\u5934\u989c\u8272\u7ebf\u5e8f\u5982\u4e0b\uff1a
\u4e0a\u4e00\u6392\u4e3a4\u9488\uff0c\u7ebf\u5e8f\u5982\u4e0b\uff1a1\u9488\u4e0d\u63a5\uff0c2\u9488 \u84dd\u8272 \uff0c3\u9488\u767d\u8272\uff0c4\u9488 \u6a59\u8272
\u4e0b\u4e00\u6392\u4e3a5\u9488\uff0c\u7ebf\u5e8f\u5982\u4e0b\uff1a5\u9488 \u7eff\u8272 \uff0c6\u9488 \u8910\u8272 \uff0c7\u9488 \u9ec4\u8272 \uff0c8\u9488\u9ed1\u8272\uff0c9\u9488\u4e0d\u63a5
\u4eceRJ45\u8f6c\u63a5\u5668\u5f15\u51fa\u7684\u7ebf\uff1a \u7ea2\u8272 \u4e0d\u8981\u63a5 \uff0c
4\u3001\u505a\u597dCOM\u8f6c\u6362\u5668\u540e\uff0c\u5c06\u8bbe\u5907\u63d2\u5165\u5230PC\u7684COM\u53e3\u3002
5\u3001\u518d\u7528\u4e00\u6761568B\u53cc\u7ede\u7ebf\u4e0e\u914d\u7ebf\u67b6\u76f8\u8fde\uff0c\u8fd9\u6837\u5373\u53ef\u5b8c\u6210RJ45\u8f6cCOM\u3002
\u9700\u8981\u7684\u5907\u4ef6\uff1aDB9\u8f6cRJ45\u8f6c\u6362\u56682\u4e2a\uff0c\u6807\u51c6100M\u4ee5\u592a\u7f51\u7ebf\u4e00\u6839\uff0cDB9\u8f6cRJ45\u5934
\u5236\u4f5c\u6b65\u9aa4\uff1a
2. \u6309\u7167\u56fe\u4e8c\u63a5\u7ebf\uff1a
3\u3001COM\u53e3\u516c\u5934\u989c\u8272\u7ebf\u5e8f\u5982\u4e0b\uff1a
\u4e0a\u4e00\u6392\u4e3a4\u9488\uff0c\u7ebf\u5e8f\u5982\u4e0b\uff1a1\u9488\u4e0d\u63a5\uff0c2\u9488 \u84dd\u8272 \uff0c3\u9488\u767d\u8272\uff0c4\u9488 \u6a59\u8272
\u4e0b\u4e00\u6392\u4e3a5\u9488\uff0c\u7ebf\u5e8f\u5982\u4e0b\uff1a5\u9488 \u7eff\u8272 \uff0c6\u9488 \u8910\u8272 \uff0c7\u9488 \u9ec4\u8272 \uff0c8\u9488\u9ed1\u8272\uff0c9\u9488\u4e0d\u63a5
\u4eceRJ45\u8f6c\u63a5\u5668\u5f15\u51fa\u7684\u7ebf\uff1a \u7ea2\u8272 \u4e0d\u8981\u63a5 \uff0c
4\u3001\u505a\u597dCOM\u8f6c\u6362\u5668\u540e\uff0c\u5c06\u8bbe\u5907\u63d2\u5165\u5230PC\u7684COM\u53e3\u3002
5\u3001\u518d\u7528\u4e00\u6761568B\u53cc\u7ede\u7ebf\u4e0e\u914d\u7ebf\u67b6\u76f8\u8fde\uff0c\u8fd9\u6837\u5373\u53ef\u5b8c\u6210RJ45\u8f6cCOM\u3002
232串口线的3线 Tx、Rx、Gnd 即可全双工通信
一般只需连接2、3、5，但用线最好用两对，收发分别用一对，5脚接两根地线。
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