rs232接口是不是就是串口? 单片机串口和RS232接口区别?有几个串口电路板上就有几个R...

\u8bf7\u95ee\u73b0\u5728\u7535\u8111\u4e0a\u7684\u4e32\u53e3\u662fRS232\u8fd8\u662fRS485\uff1f

\u4e00\u822c\u8ba1\u7b97\u673a\u7684\u4e32\u53e3\u5f53\u7136\u662fRS232\u3002\u4f46\u4e00\u4e9b\u5de5\u4e1a\u8ba1\u7b97\u673a\u53ef\u4ee5\u9009\u62e9RS485\u63a5\u53e3\u3002
RS232\u662f\u4e2a\u4eba\u8ba1\u7b97\u673a\u4e0a\u7684\u901a\u8baf\u63a5\u53e3\u4e4b\u4e00\uff0c\u7531\u7535\u5b50\u5de5\u4e1a\u534f\u4f1a(Electronic Industries Association\uff0cEIA) \u6240\u5236\u5b9a\u7684\u5f02\u6b65\u4f20\u8f93\u6807\u51c6\u63a5\u53e3\u3002
\u901a\u5e38 RS-232 \u63a5\u53e3\u4ee59\u4e2a\u5f15\u811a (DB-9) \u6216\u662f25\u4e2a\u5f15\u811a (DB-25) \u7684\u578b\u6001\u51fa\u73b0\uff0c\u4e00\u822c\u4e2a\u4eba\u8ba1\u7b97\u673a\u4e0a\u4f1a\u6709\u4e24\u7ec4 RS-232 \u63a5\u53e3\uff0c\u5206\u522b\u79f0\u4e3a COM1 \u548c COM2\u3002
RS232\u8ddfRS485\u9488\u811a\u4e00\u6837\u662f\u4e0d\u4e00\u6837\u7684\uff0cRS232\u6807\u51c6\u4e3a9\u9488\uff0c\u800cRS485\u4e00\u822c\u4e3aA\u3001B\u53ca\u5730\u51713\u9488\u3002\u7535\u8111\u4e0a\u6807\u51c6\u914d\u7f6e\u7684\u7a97\u53e3\u90fd\u662fRS232\u7a97\u53e3\uff0c\u5982\u679c\u8981\u53d8\u6210RS485\uff0c\u9700\u8981\u7528\u4e13\u95e8\u7684RS232\u8f6cRS485\u786c\u4ef6\u8f6c\u6362\u63a5\u53e3\u8fdb\u884c\u8f6c\u6362\u3002
RS232\u63a5\u53e3\u7684\u901f\u5ea6\u867d\u7136\u5f88\u6162\uff0c\u4f46\u662f\u56e0\u4e3a\u5176\u6807\u51c6\u5316\u8bbe\u8ba1\uff08\u7531\u7535\u5b50\u5de5\u4e1a\u534f\u4f1a(Electronic Industries Association\uff0cEIA) \u6240\u5236\u5b9a\u7684\u5f02\u6b65\u4f20\u8f93\u6807\u51c6\u63a5\u53e3\uff09\uff0c\u80fd\u5728\u5f88\u591a\u8bbe\u5907\u4e0a\u901a\u7528\uff0c\u56e0\u6b64\u8fd8\u662f\u5f88\u5e7f\u6cdb\u5730\u88ab\u4f7f\u7528\u7740\u3002

\u6269\u5c55\u8d44\u6599\uff1a
\u5728\u4f4e\u901f\u3001\u77ed\u8ddd\u79bb\u3001\u65e0\u5e72\u6270\u7684\u573a\u5408\u53ef\u4ee5\u91c7\u7528\u666e\u901a\u7684\u53cc\u7ede\u7ebf\u3002
\u53cd\u4e4b\uff0c\u5728\u9ad8\u901f\u3001\u957f\u7ebf\u4f20\u8f93\u65f6\uff0c\u5219\u5fc5\u987b\u91c7\u7528\u963b\u6297\u5339\u914d\uff08\u4e00\u822c\u4e3a120\u03a9\uff09\u7684RS485\u4e13\u7528\u7535\u7f06\uff08STP-120\u03a9\uff08\u7528\u4e8eRS485 & CAN\uff09\u4e00\u5bf918AWG\uff09\u3002
\u800c\u5728\u5e72\u6270\u6076\u52a3\u7684\u73af\u5883\u4e0b\u8fd8\u5e94\u91c7\u7528\u94e0\u88c5\u578b\u53cc\u7ede\u5c4f\u853d\u7535\u7f06\uff08ASTP-120\u03a9\uff08\u7528\u4e8eRS485 & CAN\uff09\u4e00\u5bf918AWG\uff09\u3002
\u5728\u4f7f\u7528RS485\u63a5\u53e3\u65f6\uff0c\u5bf9\u4e8e\u7279\u5b9a\u7684\u4f20\u8f93\u7ebf\u8def\uff0c\u4eceRS485\u63a5\u53e3\u5230\u8d1f\u8f7d\u5176\u6570\u636e\u4fe1\u53f7\u4f20\u8f93\u6240\u5141\u8bb8\u7684\u6700\u5927\u7535\u7f06\u957f\u5ea6\u4e0e\u4fe1\u53f7\u4f20\u8f93\u7684\u6ce2\u7279\u7387\u6210\u53cd\u6bd4\uff0c\u8fd9\u4e2a\u957f\u5ea6\u6570\u636e\u4e3b\u8981\u662f\u53d7\u4fe1\u53f7\u5931\u771f\u53ca\u566a\u58f0\u7b49\u56e0\u7d20\u6240\u5f71\u54cd\u3002
\u7406\u8bba\u4e0a\uff0c\u901a\u4fe1\u901f\u7387\u5728100Kbps\u53ca\u4ee5\u4e0b\u65f6\uff0cRS485\u7684\u6700\u957f\u4f20\u8f93\u8ddd\u79bb\u53ef\u8fbe1200\u7c73\uff0c\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u4f20\u8f93\u7684\u8ddd\u79bb\u4e5f\u56e0\u82af\u7247\u53ca\u7535\u7f06\u7684\u4f20\u8f93\u7279\u6027\u800c\u6709\u6240\u5dee\u5f02\u3002
\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u53ef\u4ee5\u91c7\u7528\u589e\u52a0\u4e2d\u7ee7\u7684\u65b9\u6cd5\u5bf9\u4fe1\u53f7\u8fdb\u884c\u653e\u5927\uff0c\u6700\u591a\u53ef\u4ee5\u52a0\u516b\u4e2a\u4e2d\u7ee7\uff0c\u4e5f\u5c31\u662f\u8bf4\u7406\u8bba\u4e0aRS485\u7684\u6700\u5927\u4f20\u8f93\u8ddd\u79bb\u53ef\u4ee5\u8fbe\u523010.8\u516c\u91cc\u3002
\u5982\u679c\u786e\u5b9e\u9700\u8981\u957f\u8ddd\u79bb\u4f20\u8f93\uff0c\u53ef\u4ee5\u91c7\u7528\u5149\u7ea4\u4e3a\u4f20\u64ad\u4ecb\u8d28\uff0c\u6536\u53d1\u4e24\u7aef\u5404\u52a0\u4e00\u4e2a\u5149\u7535\u8f6c\u6362\u5668\uff0c\u591a\u6a21\u5149\u7ea4\u7684\u4f20\u8f93\u8ddd\u79bb\u662f5\u523010\u516c\u91cc\uff0c\u800c\u91c7\u7528\u5355\u6a21\u5149\u7ea4\u53ef\u8fbe50\u516c\u91cc\u7684\u4f20\u64ad\u8ddd\u79bb\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1-rs485

\u5355\u7247\u673a\u4e32\u53e3\u662fTTL\u7535\u5e73\uff0c\u5e76\u4e0d\u80fd\u8fdc\u8ddd\u79bb\u6216\u591a\u673a\u901a\u4fe1\u3002\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e24\u4e2a\u76ee\u7684\uff0c\u5c06\u5355\u7247\u673a\u7684\u4e32\u53e3\u518d\u63a5\u6210RS232\u63a5\u53e3\uff0c\u901a\u8fc7RS232\u603b\u7ebf\uff0c\u53ef\u53cc\u673a\u8fdc\u8ddd\u79bb\u901a\u4fe1\u3002\u5173\u4e8eRS232\u63a5\u53e3\u6807\u51c6\u548c\u7535\u5e73\u53ef\u67e5\u767e\u5ea6\u767e\u79d1\u3002
\u5982\u679c\u8981\u5b9e\u73b0\u8fdc\u8ddd\u79bb\u591a\u673a\u901a\u4fe1\uff0c\u628a\u5355\u7247\u673a\u4e32\u53e3\u63a5\u6210RS485\u63a5\u53e3\uff0c\u7528RS485\u603b\u7ebf\u8fde\u63a5\u591a\u4e2a\u8bbe\u5907\u3002
\u6240\u4ee5\uff0c\u4e32\u53e3\u53ef\u4ee5\u662fRS232\uff0c\u4e5f\u53ef\u4ee5\u662fRS485\u3002



可以这么说。
rs232是接口的电气标准.
串口是表示接口的通信方式.其可以包括 rs232接口 因为232就是通信串口。
但是大家俗称就是串口或者叫rs232了。

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