{"id":25121,"date":"2023-10-02T12:27:20","date_gmt":"2023-10-02T04:27:20","guid":{"rendered":"https:\/\/www.modbus.cn\/?p=25121"},"modified":"2024-05-07T23:38:51","modified_gmt":"2024-05-07T15:38:51","slug":"chuan-kou-tong-xin-yu-qian-ru-shi-xi-tong-yi-wen-xiang-jie-ge-zhong-tong-xin-jie-kou","status":"publish","type":"post","link":"https:\/\/www.modbus.cn\/en\/25121.html","title":{"rendered":"\u4e32\u53e3\u901a\u4fe1\u4e0e\u5d4c\u5165\u5f0f\u7cfb\u7edf\uff1a\u4e00\u6587\u8be6\u89e3\u5404\u79cd\u901a\u4fe1\u63a5\u53e3"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u5728\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u677f\u4e0a\u901a\u4fe1\u63a5\u53e3\u662f\u6307\u7528\u4e8e\u5c06\u5404\u79cd\u96c6\u6210\u7535\u8def\u4e0e\u5176\u4ed6\u5916\u56f4\u8bbe\u5907\u4ea4\u4e92\u8fde\u63a5\u7684\u901a\u4fe1\u901a\u8def\u6216\u603b\u7ebf\u3002<br>UART\u3001I2C\u3001RS485 \u7b49\u666e\u904d\u5728\u7528\uff0c\u5bf9\u5b83\u4eec\u7684\u8ba4\u8bc6\u53ef\u80fd\u6a21\u68f1\u4e24\u53ef\uff0c\u672c\u6587\u628a\u5b83\u4eec\u6574\u7406\u4e86\u4e00\u4e0b\u3002<br>UART\u901a\u7528\u5f02\u6b65\u6536\u53d1\u5668<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>UART\u53e3\u6307\u7684\u662f\u4e00\u79cd\u7269\u7406\u63a5\u53e3\u5f62\u5f0f(\u786c\u4ef6)\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122722148.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">UART\u662f\u5f02\u6b65\uff0c\u5168\u53cc\u5de5\u4e32\u53e3\u603b\u7ebf\u3002\u5b83\u6bd4\u540c\u6b65\u4e32\u53e3\u590d\u6742\u5f88\u591a\u3002\u6709\u4e24\u6839\u7ebf\uff0c\u4e00\u6839TXD\u7528\u4e8e\u53d1\u9001\uff0c\u4e00\u6839RXD\u7528\u4e8e\u63a5\u6536\u3002<br>UART\u7684\u4e32\u884c\u6570\u636e\u4f20\u8f93\u4e0d\u9700\u8981\u4f7f\u7528\u65f6\u949f\u4fe1\u53f7\u6765\u540c\u6b65\u4f20\u8f93\uff0c\u800c\u662f\u4f9d\u8d56\u4e8e\u53d1\u9001\u8bbe\u5907\u548c\u63a5\u6536\u8bbe\u5907\u4e4b\u95f4\u9884\u5b9a\u4e49\u7684\u914d\u7f6e\u3002<br>\u5bf9\u4e8e\u53d1\u9001\u8bbe\u5907\u548c\u63a5\u6536\u8bbe\u5907\u6765\u8bf4\uff0c\u4e24\u8005\u7684\u4e32\u884c\u901a\u4fe1\u914d\u7f6e\u5e94\u8be5\u8bbe\u7f6e\u4e3a\u5b8c\u5168\u76f8\u540c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122723404.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u25cf\u8d77\u59cb\u4f4d\uff1a\u8868\u793a\u6570\u636e\u4f20\u8f93\u7684\u5f00\u59cb\uff0c\u7535\u5e73\u903b\u8f91\u4e3a\u201c0\u201d \u3002<br>\u25cf\u6570\u636e\u4f4d\uff1a\u53ef\u80fd\u503c\u67095\u30016\u30017\u30018\u30019\uff0c\u8868\u793a\u4f20\u8f93\u8fd9\u51e0\u4e2abit \u4f4d\u6570\u636e\u3002\u4e00\u822c\u53d6\u503c\u4e3a8\uff0c\u56e0\u4e3a\u4e00\u4e2aASCII \u5b57\u7b26\u503c\u4e3a8 \u4f4d\u3002<br>\u25cf\u5947\u5076\u6821\u9a8c\u4f4d\uff1a\u7528\u4e8e\u63a5\u6536\u65b9\u5bf9\u63a5\u6536\u5230\u7684\u6570\u636e\u8fdb\u884c\u6821\u9a8c\uff0c\u6821\u9a8c\u201c1\u201d \u7684\u4f4d\u6570\u4e3a\u5076\u6570(\u5076\u6821\u9a8c) \u6216\u5947\u6570(\u5947\u6821\u9a8c)\uff0c\u4ee5\u6b64\u6765\u6821\u9a8c\u6570\u636e\u4f20\u9001\u7684\u6b63\u786e\u6027\uff0c\u4f7f\u7528\u65f6\u4e0d\u9700\u8981\u6b64\u4f4d\u4e5f\u53ef\u4ee5\u3002<br>\u25cf\u505c\u6b62\u4f4d\uff1a\u8868\u793a\u4e00\u5e27\u6570\u636e\u7684\u7ed3\u675f\u3002\u7535\u5e73\u903b\u8f91\u4e3a\u201c1\u201d\u3002<br>\u25cf\u6ce2\u7279\u7387\uff1a\u4e32\u53e3\u901a\u4fe1\u65f6\u7684\u901f\u7387\uff0c\u5b83\u7528\u5355\u4f4d\u65f6\u95f4\u5185\u4f20\u8f93\u7684\u4e8c\u8fdb\u5236\u4ee3\u7801\u7684\u6709\u6548\u4f4d(bit) \u6570\u6765\u8868\u793a\uff0c\u5176\u5355\u4f4d\u4e3a\u6bcf\u79d2\u6bd4\u7279\u6570bit\/s(bps)\u3002<br>\u5982\u679c\u7528\u901a\u7528 IO \u53e3\u6a21\u62dfUART\u603b\u7ebf\uff0c\u5219\u9700\u4e00\u4e2a\u8f93\u5165\u53e3\uff0c\u4e00\u4e2a\u8f93\u51fa\u53e3\u3002<br>I2C\u603b\u7ebf<br><br>I2C\u603b\u7ebf\u662f\u4e00\u79cd\u540c\u6b65\u3001\u534a\u53cc\u5de5\u53cc\u5411\u7684\u4e24\u7ebf\u5f0f\u4e32\u53e3\u603b\u7ebf\u3002\u5b83\u7531\u4e24\u6761\u603b\u7ebf\u7ec4\u6210\uff1a\u4e32\u884c\u65f6\u949f\u7ebf SCL \u548c\u4e32\u884c\u6570\u636e\u7ebf SDA\u3002<br>SCL\u7ebf\u2014\u2014\u8d1f\u8d23\u4ea7\u751f\u540c\u6b65\u65f6\u949f\u8109\u51b2\u3002<br>SDA\u7ebf\u2014\u2014\u8d1f\u8d23\u5728\u8bbe\u5907\u95f4\u4f20\u8f93\u4e32\u884c\u6570\u636e\u3002<br>\u8be5\u603b\u7ebf\u53ef\u4ee5\u5c06\u591a\u4e2a I2C \u8bbe\u5907\u8fde\u63a5\u5230\u8be5\u7cfb\u7edf\u4e0a\u3002\u8fde\u63a5\u5230 I2C \u603b\u7ebf\u4e0a\u7684\u8bbe\u5907\u65e2\u53ef\u4ee5\u7528\u4f5c\u4e3b\u8bbe\u5907\uff0c\u4e5f\u53ef\u4ee5\u7528\u4f5c\u4ece\u8bbe\u5907\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122724110.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u8bbe\u5907\u8d1f\u8d23\u63a7\u5236\u901a\u4fe1\uff0c\u901a\u8fc7\u5bf9\u6570\u636e\u4f20\u8f93\u8fdb\u884c\u521d\u59cb\u5316\uff0c\u6765\u53d1\u9001\u6570\u636e\u5e76\u4ea7\u751f\u6240\u9700\u7684\u540c\u6b65\u65f6\u949f\u8109\u51b2\u3002\u4ece\u8bbe\u5907\u5219\u662f\u7b49\u5f85\u6765\u81ea\u4e3b\u8bbe\u5907\u7684\u547d\u4ee4\uff0c\u5e76\u54cd\u5e94\u547d\u4ee4\u63a5\u6536\u3002<br>\u4e3b\u8bbe\u5907\u548c\u4ece\u8bbe\u5907\u90fd\u53ef\u4ee5\u4f5c\u4e3a\u53d1\u9001\u8bbe\u5907\u6216\u63a5\u6536\u8bbe\u5907\u3002\u65e0\u8bba\u4e3b\u8bbe\u5907\u662f\u4f5c\u4e3a\u53d1\u9001\u8bbe\u5907\u8fd8\u662f\u63a5\u6536\u8bbe\u5907\uff0c\u540c\u6b65\u65f6\u949f\u4fe1\u53f7\u90fd\u53ea\u80fd\u7531\u4e3b\u8bbe\u5907\u4ea7\u751f\u3002<br>\u5982\u679c\u7528\u901a\u7528IO\u53e3\u6a21\u62dfI2C\u603b\u7ebf\uff0c\u5e76\u5b9e\u73b0\u53cc\u5411\u4f20\u8f93\uff0c\u5219\u9700\u4e00\u4e2a\u8f93\u5165\u8f93\u51fa\u53e3(SDA)\uff0c\u53e6\u5916\u8fd8\u9700\u4e00\u4e2a\u8f93\u51fa\u53e3(SCL)\u3002<br>SPI\u4e32\u884c\u5916\u8bbe\u63a5\u53e3<br><br>SPI\u603b\u7ebf\u662f\u540c\u6b65\u3001\u5168\u53cc\u5de5\u53cc\u5411\u76844\u7ebf\u5f0f\u4e32\u884c\u63a5\u53e3\u603b\u7ebf\u3002\u5b83\u662f\u7531\u201c\u5355\u4e2a\u4e3b\u8bbe\u5907+\u591a\u4e2a\u4ece\u8bbe\u5907\u201d\u6784\u6210\u7684\u7cfb\u7edf\u3002<br>\u5728\u7cfb\u7edf\u4e2d\uff0c\u53ea\u8981\u4efb\u610f\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u4e3b\u8bbe\u5907\u662f\u5904\u4e8e\u6fc0\u6d3b\u72b6\u6001\u7684\uff0c\u5c31\u53ef\u4ee5\u5b58\u5728\u591a\u4e2aSPI\u4e3b\u8bbe\u5907\u3002\u5e38\u8fd0\u7528\u4e8eAD\u8f6c\u6362\u5668\u3001EEPROM\u3001FLASH\u3001\u5b9e\u65f6\u65f6\u949f\u3001\u6570\u5b57\u4fe1\u53f7\u5904\u7406\u5668\u548c\u6570\u5b57\u4fe1\u53f7\u89e3\u7801\u5668\u4e4b\u95f4\u5b9e\u73b0\u901a\u4fe1\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122725272.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u5b9e\u73b0\u901a\u4fe1\uff0cSPI\u5171\u67094\u6761\u4fe1\u53f7\u7ebf\uff0c\u5206\u522b\u662f\uff1a<br>\u25cf\u4e3b\u8bbe\u5907\u51fa\u3001\u4ece\u8bbe\u5907\u5165\uff08Master Out Slave In\uff0cMOSI\uff09\uff1a\u7531\u4e3b\u8bbe\u5907\u5411\u4ece\u8bbe\u5907\u4f20\u8f93\u6570\u636e\u7684\u4fe1\u53f7\u7ebf\uff0c\u4e5f\u79f0\u4e3a\u4ece\u8bbe\u5907\u8f93\u5165\uff08Slave Input\/Slave Data In\uff0cSI\/SDI\uff09\u3002<br>\u25cf\u4e3b\u8bbe\u5907\u5165\u3001\u4ece\u8bbe\u5907\u51fa\uff08Master In Slave Out\uff0cMISO\uff09\uff1a\u7531\u4ece\u8bbe\u5907\u5411\u4e3b\u8bbe\u5907\u4f20\u8f93\u6570\u636e\u7684\u4fe1\u53f7\u7ebf\uff0c\u4e5f\u79f0\u4e3a\u4ece\u8bbe\u5907\u8f93\u51fa\uff08Slave Output\/Slave Data Out\uff0cSO\/SDO\uff09\u3002<br>\u25cf\u4e32\u884c\u65f6\u949f\uff08Serial Clock\uff0cSCLK\uff09\uff1a\u4f20\u8f93\u65f6\u949f\u4fe1\u53f7\u7684\u4fe1\u53f7\u7ebf\u3002<br>\u25cf\u4ece\u8bbe\u5907\u9009\u62e9\uff08Slave Select\uff0cSS\uff09\uff1a\u7528\u4e8e\u9009\u62e9\u4ece\u8bbe\u5907\u7684\u4fe1\u53f7\u7ebf\uff0c\u4f4e\u7535\u5e73\u6709\u6548\u3002<br>SPI \u7684\u5de5\u4f5c\u65f6\u5e8f\u6a21\u5f0f\u7531CPOL\uff08Clock Polarity\uff0c\u65f6\u949f\u6781\u6027\uff09\u548cCPHA\uff08Clock Phase\uff0c\u65f6\u949f\u76f8\u4f4d\uff09\u4e4b\u95f4\u7684\u76f8\u4f4d\u5173\u7cfb\u51b3\u5b9a\u3002<br>CPOL \u8868\u793a\u65f6\u949f\u4fe1\u53f7\u7684\u521d\u59cb\u7535\u5e73\u7684\u72b6\u6001\uff0cCPOL \u4e3a0 \u8868\u793a\u65f6\u949f\u4fe1\u53f7\u521d\u59cb\u72b6\u6001\u4e3a\u4f4e\u7535\u5e73\uff0c\u4e3a1 \u8868\u793a\u65f6\u949f\u4fe1\u53f7\u7684\u521d\u59cb\u7535\u5e73\u662f\u9ad8\u7535\u5e73\u3002<br>CPHA \u8868\u793a\u5728\u54ea\u4e2a\u65f6\u949f\u6cbf\u91c7\u6837\u6570\u636e\uff0cCPHA \u4e3a 0 \u8868\u793a\u5728\u9996\u4e2a\u65f6\u949f\u53d8\u5316\u6cbf\u91c7\u6837\u6570\u636e\uff0c\u800cCPHA \u4e3a1 \u5219\u8868\u793a\u5728\u7b2c\u4e8c\u4e2a\u65f6\u949f\u53d8\u5316\u6cbf\u91c7\u6837\u6570\u636e\u3002<br>\u6839\u636eCPOL \u548cCPHA \u7684\u4e0d\u540c\u7ec4\u5408\u5171\u67094 \u79cd\u5de5\u4f5c\u65f6\u5e8f\u6a21\u5f0f\uff1a<br>\u25cfCPOL=0\uff0cCPHA=0<br>\u25cfCPOL=0\uff0cCPHA=1<br>\u25cfCPOL=1\uff0cCPHA=0<br>\u25cfCPOL=1\uff0cCPHA=1<br><br>UART\u3001SPI\u3001I2C\u6bd4\u8f83<br><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122726465.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u25cfI2C\u7ebf\u66f4\u5c11\uff0c\u6bd4UART\u3001SPI\u66f4\u4e3a\u5f3a\u5927\uff0c\u4f46\u662f\u6280\u672f\u4e0a\u4e5f\u66f4\u52a0\u9ebb\u70e6\u4e9b\uff0c\u56e0\u4e3aI2C\u9700\u8981\u6709\u53cc\u5411IO\u7684\u652f\u6301\uff0c\u800c\u4e14\u4f7f\u7528\u4e0a\u62c9\u7535\u963b\uff0c\u6297\u5e72\u6270\u80fd\u529b\u8f83\u5f31\uff0c\u4e00\u822c\u7528\u4e8e\u540c\u4e00\u677f\u5361\u4e0a\u82af\u7247\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u8f83\u5c11\u7528\u4e8e\u8fdc\u8ddd\u79bb\u901a\u4fe1\u3002<br>\u25cfSPI\u5b9e\u73b0\u8981\u7b80\u5355\u4e00\u4e9b\uff0cUART\u9700\u8981\u56fa\u5b9a\u7684\u6ce2\u7279\u7387\uff0c\u5c31\u662f\u8bf4\u4e24\u4f4d\u6570\u636e\u7684\u95f4\u9694\u8981\u76f8\u7b49\uff0c\u800cSPI\u5219\u65e0\u6240\u8c13\uff0c\u56e0\u4e3a\u5b83\u662f\u6709\u65f6\u949f\u7684\u534f\u8bae\u3002<br>\u25cfI2C\u7684\u901f\u5ea6\u6bd4SPI\u6162\u4e00\u70b9\uff0c\u534f\u8bae\u6bd4SPI\u590d\u6742\u4e00\u70b9\uff0c\u4f46\u662f\u8fde\u7ebf\u4e5f\u6bd4\u6807\u51c6\u7684SPI\u8981\u5c11\u3002<br>\u25cfUART\u4e00\u5e27\u53ef\u4ee5\u4f205\/6\/7\/8\u4f4d\uff0cI2C\u5fc5\u987b\u662f8\u4f4d\u3002I2C\u548cSPI\u90fd\u4ece\u6700\u9ad8\u4f4d\u5f00\u59cb\u4f20\u3002<br>\u25cfSPI\u7528\u7247\u9009\u4fe1\u53f7\u9009\u62e9\u4ece\u673a\uff0cI2C\u7528\u5730\u5740\u9009\u62e9\u4ece\u673a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122727518.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">RS232\u4e32\u53e3\u901a\u4fe1<br>\u4f20\u8f93\u7ebf\u6709\u4e24\u6839\uff0c\u5730\u7ebf\u4e00\u6839\u3002\u7535\u5e73\u662f\u8d1f\u903b\u8f91\uff1a<br>-3V~-15V\u903b\u8f91\u201c1\u201d\uff0c+3V~+15V\u903b\u8f91\u201c0\u201d\u3002<br>RS-232\u4e32\u53e3\u901a\u4fe1\u4f20\u8f93\u8ddd\u79bb15\u7c73\u5de6\u53f3\u3002\u53ef\u505a\u5230\u53cc\u5411\u4f20\u8f93\uff0c\u5168\u53cc\u5de5\u901a\u8baf\uff0c\u4f20\u8f93\u901f\u7387\u4f4e20kbps \u3002<br>\u4e0b\u56fe\u662fDB9\u516c\u5934\u548c\u6bcd\u5934\u7684\u5b9a\u4e49\uff0c\u4e00\u822c\u7528\u6700\u591a\u7684\u662fRXD\u3001TXD\u3001GND\u4e09\u4e2a\u4fe1\u53f7\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122728160.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">TTL\u548cRS-232\u4e92\u8f6c<br>\u5355\u7247\u673a\u63a5\u53e3\u4e00\u822c\u662fTTL\u7535\u5e73\uff0c\u5982\u679c\u63a5232\u7535\u5e73\u7684\u5916\u8bbe\uff0c\u5c31\u9700\u8981\u52a0TTL\u8f6cRS232\u7684\u6a21\u5757\u3002\u5982\u4e0b\u56fe\uff0c\u53ef\u7528\u82af\u7247MAX232\u8fdb\u884c\u8f6c\u6362\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122729608.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">RS422\u4e32\u53e3\u901a\u4fe1<br>RS-422\u67094\u6839\u4fe1\u53f7\u7ebf\uff1a\u4e24\u6839\u53d1\u9001\u3001\u4e24\u6839\u63a5\u6536\u548c\u4e00\u6839\u5730\u7ebf\uff0c\u662f\u5168\u53cc\u5de5\u901a\u4fe1\u3002<br>\u5b83\u6709\u4e00\u4e2a\u4e3b\u8bbe\u5907\uff0c\u5176\u4f59\u4e3a\u4ece\u8bbe\u5907\uff0c\u4ece\u8bbe\u5907\u4e4b\u95f4\u4e0d\u80fd\u901a\u4fe1\uff0c\u6240\u4ee5RS-422\u652f\u6301\u70b9\u5bf9\u591a\u7684\u53cc\u5411\u901a\u4fe1\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122729121.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">RS485\u4e32\u53e3\u901a\u4fe1<br>RS-485\u91c7\u7528\u5e73\u8861\u53d1\u9001\u548c\u5dee\u5206\u63a5\u6536\uff0c\u56e0\u6b64\u5177\u6709\u6291\u5236\u5171\u6a21\u5e72\u6270\u7684\u80fd\u529b\u3002<br>\u91c7\u7528\u4e24\u7ebf\u534a\u53cc\u5de5\u4f20\u8f93\uff0c\u6700\u5927\u901f\u738710Mb\/s\uff0c\u7535\u5e73\u903b\u8f91\u662f\u4e24\u7ebf\u7684\u7535\u5e73\u5dee\u6765\u51b3\u5b9a\u7684\uff0c\u63d0\u9ad8\u6297\u5e72\u6270\u80fd\u529b\uff0c\u4f20\u8f93\u8ddd\u79bb\u957f(\u51e0\u5341\u7c73\u5230\u4e0a\u5343\u7c73)\u3002<br>+2V~+6V\u903b\u8f91\u201c1\u201d\uff0c-2~-6V\u903b\u8f91\u201c0\u201d\u3002<br>TTL\u8f6c\u6210RS-485\u5f88\u5e38\u89c1\uff0c\u6bd4\u5982MAX485\uff0c\u53c2\u8003\u7535\u8def\u5982\u4e0b<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122730590.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">RE\u5f15\u811a\uff1a\u63a5\u6536\u5668\u8f93\u51fa\u4f7f\u80fd\uff08\u4f4e\u7535\u5e73\u6709\u6548\uff09\u3002<br>DE\u5f15\u811a\uff1a\u53d1\u9001\u5668\u8f93\u51fa\u4f7f\u80fd\uff08\u9ad8\u7535\u5e73\u6709\u6548\uff09\u3002\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7MCU\u7684IO\u7aef\u53e3\u63a7\u5236\u3002<br>TTL<br>\u5d4c\u5165\u5f0f\u91cc\u9762\u8bf4\u7684\u4e32\u53e3\uff0c\u4e00\u822c\u662f\u6307UART\u53e3\u30024\u4e2apin\uff08Vcc,GND,RX,TX\uff09\uff0c\u7528TTL\u7535\u5e73\u3002<br>PC\u4e2d\u7684COM\u53e3\u5373\u4e32\u884c\u901a\u8baf\u7aef\u53e3\uff0c\u7b80\u79f0\u4e32\u53e3\u30029\u4e2aPin\uff0c\u7528RS232\u7535\u5e73\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122731988.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e32\u53e3\u3001COM\u53e3\u662f\u6307\u7684\u7269\u7406\u63a5\u53e3\u5f62\u5f0f(\u786c\u4ef6)\u3002\u800cTTL\u3001RS-232\u3001RS-485\u662f\u6307\u7535\u5e73\u6807\u51c6(\u7535\u4fe1\u53f7)\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122732163.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5355\u7247\u673a\u4e0ePC\u901a\u8baf\u793a\u610f\u56fe\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122733281.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">CAN\u603b\u7ebf<br><br>CAN\u662f\u63a7\u5236\u5668\u5c40\u57df\u7f51\u7edc\u7684\u7b80\u79f0\uff0c\u662f\u4e00\u79cd\u80fd\u591f\u5b9e\u73b0\u5206\u5e03\u5f0f\u5b9e\u65f6\u63a7\u5236\u7684\u4e32\u884c\u901a\u4fe1\u7f51\u7edc\u3002CAN\u603b\u7ebf\u7684\u529f\u80fd\u590d\u6742\u4e14\u667a\u80fd\u3002\u4e3b\u8981\u7528\u4e8e\u6c7d\u8f66\u901a\u4fe1\u3002<br>CAN\u603b\u7ebf\u7f51\u7edc\u4e3b\u8981\u6302\u5728CAN_H\u548cCAN_L\uff0c\u5404\u4e2a\u8282\u70b9\u901a\u8fc7\u8fd9\u4e24\u6761\u7ebf\u5b9e\u73b0\u4fe1\u53f7\u7684\u4e32\u884c\u5dee\u5206\u4f20\u8f93\uff0c\u4e3a\u4e86\u907f\u514d\u4fe1\u53f7\u7684\u53cd\u5c04\u548c\u5e72\u6270\uff0c\u8fd8\u9700\u8981\u5728CAN_H\u548cCAN_L\u4e4b\u95f4\u63a5\u4e0a120\u6b27\u59c6\u7684\u7ec8\u7aef\u7535\u963b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122734934.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bcf\u4e00\u4e2a\u8bbe\u5907\u65e2\u53ef\u505a\u4e3b\u8bbe\u5907\u4e5f\u53ef\u505a\u4ece\u8bbe\u5907\u3002CAN\u603b\u7ebf\u7684\u901a\u4fe1\u8ddd\u79bb\u53ef\u8fbe10\u5343\u7c73\uff08\u901f\u7387\u4f4e\u4e8e5Kbps\uff09\uff0c\u901f\u5ea6\u53ef\u8fbe1Mbps\uff08\u901a\u4fe1\u8ddd\u79bb\u5c0f\u4e8e40M\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122735256.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">CAN\u7535\u5e73\u903b\u8f91<br>CAN\u603b\u7ebf\u91c7\u7528&#8221;\u7ebf\u4e0e&#8221;\u7684\u89c4\u5219\u8fdb\u884c\u603b\u7ebf\u4ef2\u88c1\uff0c1&amp;0\u4e3a0\uff0c\u6240\u4ee5\u79f00\u4e3a\u663e\u6027\uff0c1\u4e3a\u9690\u6027\u3002<br>\u4ece\u7535\u4f4d\u4e0a\u770b\uff0c\u56e0\u4e3a\u89c4\u5b9a\u9ad8\u7535\u4f4d\u4e3a0\uff0c\u4f4e\u7535\u4f4d\u4e3a1\uff0c\u540c\u65f6\u53d1\u51fa\u4fe1\u53f7\u65f6\u5b9e\u9645\u5448\u73b0\u4e3a\u9ad8\u7535\u4f4d\uff0c\u4ece\u73b0\u8c61\u4e0a\u770b\u5c31\u50cf0\u8986\u76d6\u4e861\uff0c\u6240\u4ee5\u79f00\u4e3a\u663e\u6027\uff0c1\u4e3a\u9690\u6027\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122736190.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">USB\u901a\u4fe1\u4e32\u884c\u603b\u7ebf<br><br>USB\u63a5\u53e3\u6700\u5c11\u6709\u56db\u6839\u7ebf\uff0c\u5176\u4e2d\u6709\u4e24\u6839\u662f\u6570\u636e\u7ebf\uff0c\u800c\u6240\u6709\u7684USB\u6570\u636e\u4f20\u8f93\u90fd\u662f\u901a\u8fc7\u8fd9\u4e24\u6839\u7ebf\u5b8c\u6210\u3002\u5b83\u7684\u901a\u4fe1\u8fdc\u6bd4\u4e32\u53e3\u590d\u6742\u7684\u591a\u3002<br>\u4e24\u6839\u6570\u636e\u7ebf\u91c7\u7528\u5dee\u5206\u4f20\u8f93\uff0c\u5373\u9700\u8981\u4e24\u6839\u6570\u636e\u7ebf\u914d\u5408\u624d\u80fd\u4f20\u8f93\u4e00\u4e2abit\uff0c\u56e0\u6b64\u662f\u534a\u53cc\u5de5\u901a\u4fe1\uff0c\u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u53d1\u9001\u6216\u8005\u63a5\u6536\u3002<br>USB \u89c4\u5b9a\uff0c\u5982\u679c\u7535\u538b\u7535\u5e73\u4e0d\u53d8\uff0c\u4ee3\u8868\u903b\u8f911\uff1b\u5982\u679c\u7535\u538b\u7535\u5e73\u53d8\u5316\uff0c\u5219\u4ee3\u8868\u903b\u8f910\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122737648.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">USB\u8f6cTTL<br>\u4e00\u822cUSB\u8f6c\u4e32\u53e3\u90fd\u662f\u7528CH340G\u82af\u7247\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122738894.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u4e32\u53e3\u901a\u4fe1\u6bd4USB\u7b80\u5355\uff0c\u56e0\u4e3a\u4e32\u53e3\u901a\u4fe1\u6ca1\u6709\u534f\u8bae\u3002<br>SD\u5361<br>SD\u5361\u662f\u4e00\u79cd\u5b58\u50a8\u5361\uff0c\u53ef\u7528\u4e8e\u624b\u673a\u4f5c\u4e3a\u5185\u5b58\u5361\u4f7f\u7528\u3002<br>\u5d4c\u5165\u5f0f\u4e2d\uff0c\u5355\u7247\u673a\u4e0eSD\u5361\u901a\u4fe1\u6709\u4e24\u79cd\u6a21\u5f0f\uff1a<br>\u25cfSPI\u603b\u7ebf\u901a\u4fe1\u6a21\u5f0f<br>\u25cfSD\u603b\u7ebf\u901a\u4fe1\u6a21\u5f0f<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122738899.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0cSD\u603b\u7ebf\u6a21\u5f0f\u4e2d\u67094\u6761\u6570\u636e\u7ebf\uff1bSPI\u603b\u7ebf\u6a21\u5f0f\u4e2d\u4ec5\u6709\u4e00\u6761\u6570\u636e\u7ebf\uff08MOSI\u548cMISO\u4e0d\u80fd\u540c\u65f6\u8bfb\u6570\u636e\uff0c\u4e5f\u4e0d\u80fd\u540c\u65f6\u5199\u6570\u636e\uff09\uff1b<br>\u8fd9\u6837\u5728\u5d4c\u5165\u5f0f\u4e2d\uff0c\u5355\u7247\u673a\u4e0eSD\u5361\u901a\u4fe1\u65f6\u91c7\u7528SD\u603b\u7ebf\u6a21\u5f0f\u6bd4SPI\u603b\u7ebf\u6a21\u5f0f\u901f\u5ea6\u5feb\u51e0\u500d\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122739900.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">1-WIRE\u603b\u7ebf<br>1-Wire\u7531\u7f8e\u56fdDallas(\u8fbe\u62c9\u65af)\u516c\u53f8\u63a8\u51fa\uff0c\u662f\u4e00\u79cd\u5f02\u6b65\u534a\u53cc\u5de5\u4e32\u884c\u4f20\u8f93\u3002\u91c7\u7528\u5355\u6839\u4fe1\u53f7\u7ebf\uff0c\u65e2\u4f20\u8f93\u65f6\u949f\u53c8\u4f20\u8f93\u6570\u636e\uff0c\u800c\u4e14\u6570\u636e\u4f20\u8f93\u662f\u53cc\u5411\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122740188.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5355\u603b\u7ebf\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u4e00\u822c\u4e3a16.3Kbit\/s\uff0c\u6700\u5927\u53ef\u8fbe142 Kbit\/s\uff0c\u901a\u5e38\u60c5\u51b5\u4e0b\u91c7\u7528100Kbit\/s\u4ee5\u4e0b\u7684\u901f\u7387\u4f20\u8f93\u6570\u636e\u3002<br>1-Wire\u7ebf\u7aef\u53e3\u4e3a\u6f0f\u6781\u5f00\u8def\u6216\u4e09\u6001\u95e8\u7684\u7aef\u53e3\uff0c\u56e0\u6b64\u4e00\u822c\u9700\u8981\u52a0\u4e0a\u62c9\u7535\u963bRp\uff0c\u901a\u5e38\u9009\u75285K~10K\u03a9<br>\u4e3b\u8981\u5e94\u7528\u5728\uff1a\u6253\u5370\u58a8\u76d2\u6216\u533b\u7597\u6d88\u8017\u54c1\u7684\u8bc6\u522b\uff1b\u5370\u5237\u7535\u8def\u677f\u3001\u914d\u4ef6\u53ca\u5916\u8bbe\u7684\u8bc6\u522b\u548c\u8ba4\u8bc1\u3002<br>DMA\u76f4\u63a5\u5b58\u50a8\u5668\u8bbf\u95ee<br>DMA\u662fSTM32\u5185\u7684\u4e00\u4e2a\u786c\u4ef6\u6a21\u5757\uff0c\u5b83\u72ec\u7acb\u4e8eCPU\uff0c\u5728\u5916\u56f4\u8bbe\u5907\u548c\u5185\u5b58\u4e4b\u95f4\u8fdb\u884c\u6570\u636e\u4f20\u8f93\uff0c\u89e3\u653e\u4e86CPU\uff0c\u53ef\u4f7fCPU\u7684\u6548\u7387\u5927\u5927\u63d0\u9ad8\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/10\/20231002122741824.jpg\" ><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b83\u53ef\u4ee5\u9ad8\u901f\u8bbf\u95ee\u5916\u8bbe\u3001\u5185\u5b58\uff0c\u4f20\u8f93\u4e0d\u53d7CPU\u7684\u63a7\u5236\uff0c\u5e76\u4e14\u662f\u53cc\u5411\u901a\u4fe1\u3002\u56e0\u6b64\uff0c\u4f7f\u7528DMA\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\uff0c\u8fd9\u4e5f\u662fARM\u67b6\u6784\u7684\u4e00\u4e2a\u4eae\u70b9\u2014\u2014DMA\u603b\u7ebf\u63a7\u5236\u3002<br>DMA\u5c31\u76f8\u5e94\u4e8e\u4e00\u6761\u9ad8\u901f\u516c\u8def\uff0c\u4e13\u7528\u3001\u9ad8\u901f\u7684\u7279\u6027\u3002\u5982\u679c\u4e0d\u4f7f\u7528DMA\uff0c\u4e5f\u53ef\u4ee5\u8fbe\u5230\u76ee\u7684\uff0c\u53ea\u662f\u8fbe\u5230\u76ee\u7684\u7684\u65f6\u95f4\u6bd4\u8f83\u957f\u3002<br>Ethernet\u4ee5\u592a\u7f51<br>\u4ee5\u592a\u7f51\u662f\u76ee\u524d\u5e94\u7528\u6700\u666e\u904d\u7684\u5c40\u57df\u7f51\u6280\u672f\u3002\u5927\u5bb6\u77e5\u9053\uff0c\u4ee5\u592a\u7f51\u63a5\u53e3\u53ef\u5206\u4e3a\u534f\u8bae\u5c42\u548c\u7269\u7406\u5c42\u3002<br>\u534f\u8bae\u5c42\u662f\u7531\u4e00\u4e2a\u53ebMAC(Media 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