"# Modbus \u534f\u8bae\u7b80\u4ecb\n\n> 2024-04-29 | 2026-06-30\n> https:\/\/www.modbus.cn\/en\/27914.html\n\n**Modbus \u534f\u8bae\u6807\u51c6**\n\n---\n\nModbus \u534f\u8bae\u662f\u4e00\u4e2a\u5f00\u653e\u6807\u51c6\u7684\u901a\u4fe1\u534f\u8bae\uff0c\u6700\u521d\u8bbe\u8ba1\u7528\u4e8e\u8fde\u63a5\u53ef\u7f16\u7a0b\u903b\u8f91\u63a7\u5236\u5668\uff08PLC\uff09\u548c\u5176\u4ed6\u81ea\u52a8\u5316\u8bbe\u5907\u3002\u5b83\u7684\u7b80\u5355\u6027\u548c\u53ef\u9760\u6027\u4f7f\u5f97 Modbus \u6210\u4e3a\u5de5\u4e1a\u9886\u57df\u4e2d\u6700\u53d7\u6b22\u8fce\u7684\u901a\u4fe1\u534f\u8bae\u4e4b\u4e00\uff0c\u88ab\u5e7f\u6cdb\u7528\u4e8e\u76d1\u63a7\u3001\u63a7\u5236\u548c\u6570\u636e\u91c7\u96c6\u3002\n\n## \u4ec0\u4e48\u662f Modbus[\u200b](https:\/\/getiot.tech\/zh\/modbus\/modbus-intro#%E4%BB%80%E4%B9%88%E6%98%AF-modbus)\n\nModbus \u662f\u5de5\u4e1a\u754c\u5e38\u7528\u7684\u4e00\u79cd\u901a\u8baf\u534f\u8bae\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u662f\u4e00\u79cd\u901a\u8baf\u7684\u7ea6\u5b9a\u3002\n\nModbus \u534f\u8bae\u5305\u62ec RTU\u3001ASCII\u3001TCP\uff0c\u5176\u4e2d Modbus-RTU \u6700\u5e38\u7528\uff0c\u6bd4\u8f83\u7b80\u5355\uff0c\u5728\u5355\u7247\u673a\u4e0a\u5f88\u5bb9\u6613\u5b9e\u73b0\u3002Modbus RTU \u534f\u8bae\u5b9a\u4e49\u4e86\u4e00\u4e2a\u4e0e\u4e0b\u5c42\u901a\u4fe1\u5c42\u65e0\u5173\u7684\u7b80\u5355\u534f\u8bae\u6570\u636e\u5355\u5143\uff08PDU\uff09\uff0c\u4e32\u884c\u94fe\u8def\u4e0a\u7684 Modbus RTU \u5e27\u683c\u5f0f\u5982\u4e0b\u56fe\u6240\u793a\u3002\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2024\/04\/20240429003202659.png)\n\n\u5176\u4e2d\uff0c\u5730\u5740\u5b57\u6bb5\u53ea\u542b\u6709\u4ece\u673a\u5730\u5740\uff1b\u529f\u80fd\u7801\u6307\u793a\u6307\u4ee4\u8981\u6267\u884c\u4f55\u79cd\u64cd\u4f5c\uff1b\u529f\u80fd\u7801\u7684\u540e\u7eed\u6570\u636e\u662f\u8bf7\u6c42\u6216\u54cd\u5e94\u6570\u636e\u5b57\u6bb5\uff1b\u5dee\u9519\u68c0\u9a8c\u5b57\u6bb5\u662f\u201c\u62a5\u6587\u5185\u5bb9\u201d\u6570\u636e\u8fdb\u884c\u201c\u5faa\u73af\u5197\u4f59\u6821\u9a8c\u201d\u8ba1\u7b97\u6240\u5f97\u7ed3\u679c\uff0c\u91c7\u7528 CRC16 \u5faa\u73af\u5197\u4f59\u6821\u9a8c\u7b97\u6cd5\u3002\n\nModbus \u548c OPC UA\u3001MQTT \u7b49\u901a\u8baf\u534f\u8bae\u672c\u8d28\u4e0a\u662f\u4e00\u6837\u7684\uff0c\u90fd\u662f\u4e3a\u4e86\u5b9e\u73b0\u591a\u4e2a\u8bbe\u5907\u76f8\u4e92\u901a\u4fe1\u7684\u5e94\u7528\u5c42\u534f\u8bae\u3002\n\n## Modbus \u7684\u8d77\u6e90\u4e0e\u53d1\u5c55[\u200b](https:\/\/getiot.tech\/zh\/modbus\/modbus-intro#modbus-%E7%9A%84%E8%B5%B7%E6%BA%90%E4%B8%8E%E5%8F%91%E5%B1%95)\n\nModbus \u534f\u8bae\u4e8e 1979 \u5e74\u7531 Modicon \u516c\u53f8\uff08\u73b0\u88ab Schneider \u516c\u53f8\u6536\u8d2d\uff09\u8bbe\u8ba1\u5f00\u53d1\uff0c\u4e00\u7ecf\u9762\u4e16\u56e0\u5176\u7b80\u5355\u5f00\u653e\u7684\u901a\u4fe1\u65b9\u5f0f\u9010\u6e10\u6210\u4e3a\u5de5\u4e1a\u7cfb\u7edf\u4e2d\u6d41\u884c\u7684\u6807\u51c6\uff0c\u662f\u5168\u7403\u7b2c\u4e00\u4e2a\u771f\u6b63\u7528\u4e8e\u5de5\u4e1a\u73b0\u573a\u7684\u603b\u7ebf\u534f\u8bae\u3002\n\n\u540e\u6765\uff0c\u4e3a\u4e86\u66f4\u597d\u5730\u666e\u53ca\u548c\u63a8\u52a8 Modbus \u57fa\u4e8e\u4ee5\u592a\u7f51\uff08TCP\/IP\uff09\u7684\u5206\u5e03\u5f0f\u5e94\u7528\uff0c\u65bd\u8010\u5fb7\u516c\u53f8\u5c06 Modbus \u534f\u8bae\u7684\u6240\u6709\u6743\u79fb\u4ea4\u7ed9 IDA\uff08Interface for Distributed Automation\uff0c\u5206\u5e03\u5f0f\u81ea\u52a8\u5316\u63a5\u53e3\uff09\u7ec4\u7ec7\uff0c\u5e76\u6210\u7acb\u4e86 Modbu-IDA \u56fd\u9645\u7ec4\u7ec7\uff0c\u8d1f\u8d23\u63a8\u5e7f Modbus \u6807\u51c6\u4ee5\u53ca\u5bf9 Modbus \u4ea7\u54c1\u8fdb\u884c\u8ba4\u8bc1\u3002\n\n\u73b0\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u4ece Modbus \u5b98\u7f51 [www.modbus.org](https:\/\/www.modbus.org\/) \u627e\u5230\u76f8\u5173\u534f\u8bae\u6587\u6863\u3001Modbus \u4ea7\u54c1\u548c\u5382\u5546\u7b49\u4fe1\u606f\u3002\n\n## Modbus \u901a\u4fe1\u534f\u8bae\u7279\u70b9[\u200b](https:\/\/getiot.tech\/zh\/modbus\/modbus-intro#modbus-%E9%80%9A%E4%BF%A1%E5%8D%8F%E8%AE%AE%E7%89%B9%E7%82%B9)\n\nModbus \u534f\u8bae\u5b9a\u4e49\u4e86\u4e00\u4e2a\u63a7\u5236\u5668\u80fd\u591f\u8ba4\u8bc6\u4f7f\u7528\u7684\u6d88\u606f\u7ed3\u6784\uff0c\u800c\u4e0d\u7ba1\u5b83\u4eec\u662f\u7ecf\u8fc7\u4f55\u79cd\u7f51\u7edc\u8fdb\u884c\u901a\u4fe1\u7684\u3002\u56e0\u6b64\uff0c\u5e95\u5c42\u901a\u4fe1\u65b9\u5f0f\u53ef\u4ee5\u4f7f\u7528 RS232\uff0cRS485 \u7b49\u4e32\u884c\u94fe\u8def\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528 TCP\/IP \u4ee5\u592a\u7f51\u94fe\u8def\u3002\u5f53\u5728 Modbus \u7f51\u7edc\u4e0a\u901a\u4fe1\u65f6\uff0c\u63a7\u5236\u5668\u5fc5\u987b\u8981\u77e5\u9053\u8be5\u7f51\u7edc\u4e2d\u5176\u4ed6\u4ece\u8bbe\u5907\u7684\u5730\u5740\uff0c\u624d\u80fd\u8bc6\u522b\u6309\u5730\u5740\u53d1\u6765\u7684\u6d88\u606f\uff0c\u5e76\u4f5c\u51fa\u76f8\u5e94\u884c\u4e3a\u3002\n\n\u7b80\u5355\u6765\u8bf4\uff0cModbus \u901a\u4fe1\u534f\u8bae\u5177\u6709\u4ee5\u4e0b\u51e0\u4e2a\u7279\u70b9\uff1a\n\n- Modbus \u534f\u8bae\u6807\u51c6\u5f00\u653e\u3001\u516c\u5f00\u53d1\u5e03\u4e14\u65e0\u7248\u7a0e\u8981\u6c42\uff0c\u7528\u6237\u53ef\u4ee5\u514d\u8d39\u83b7\u53d6\u5e76\u4f7f\u7528 Modbus \u534f\u8bae\uff0c\u4e0d\u9700\u8981\u7f34\u7eb3\u8bb8\u53ef\u8bc1\u8d39\uff1b\n\n- Modbus \u6700\u5f00\u59cb\u4f7f\u7528 RS232\uff0cRS485 \u7b49\u4e32\u884c\u94fe\u8def\u4f5c\u4e3a\u5e95\u5c42\u901a\u4fe1\u65b9\u5f0f\uff0c\u4e32\u884c\u603b\u7ebf\u7684\u63a5\u53e3\u82af\u7247\u6210\u672c\u4f4e\uff0c\u800c\u4e14\u5e03\u7ebf\u4e5f\u7b80\u5355\u65b9\u4fbf\uff1b\n\n- Modbus \u534f\u8bae\u652f\u6301\u591a\u79cd\u7535\u6c14\u63a5\u53e3\uff0c\u5982 RS232\u3001RS485\u3001TCP\/IP \u7b49\uff0c\u8fd8\u53ef\u4ee5\u5728\u5404\u79cd\u4ecb\u8d28\u4e0a\u4f20\u8f93\uff0c\u5982\u53cc\u7ede\u7ebf\u3001\u5149\u7ea4\u3001\u7ea2\u5916\u3001\u65e0\u7ebf\u7b49\uff1b\n\n- Modbus \u662f\u7b80\u5355\u5730\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u5176\u534f\u8bae\u6d88\u606f\u5e27\u683c\u5f0f\u7b80\u5355\u3001\u7d27\u51d1\u3001\u901a\u4fd7\u6613\u61c2\uff0c\u4fbf\u4e8e\u7528\u6237\u7406\u89e3\u548c\u4f7f\u7528\u3001\u5382\u5546\u5f00\u53d1\u548c\u96c6\u6210\uff0c\u65b9\u4fbf\u5f62\u6210\u5de5\u4e1a\u63a7\u5236\u7f51\u7edc\u3002\n\n## \u4e3a\u4ec0\u4e48\u8981\u5b66\u4e60 Modbus[\u200b](https:\/\/getiot.tech\/zh\/modbus\/modbus-intro#%E4%B8%BA%E4%BB%80%E4%B9%88%E8%A6%81%E5%AD%A6%E4%B9%A0-modbus)\n\n\u867d\u7136 Modbus \u5df2\u7ecf\u53d1\u5c55\u5230\u4e86\u6781\u4e3a\u6210\u719f\u7684\u9636\u6bb5\uff0c\u4f46\u7531\u4e8e\u5176\u534f\u8bae\u7684\u7b80\u5355\u6027\u4ee5\u53ca\u4fbf\u4e8e\u5728\u591a\u79cd\u901a\u4fe1\u5a92\u4ecb\u4e0a\u5b9e\u65bd\u7684\u5e94\u7528\u7279\u70b9\uff0cModbus \u4ecd\u7136\u662f\u5f53\u524d\u5de5\u4e1a\u7535\u5b50\u8bbe\u5907\u4e4b\u95f4\u5e38\u7528\u7684\u8fde\u63a5\u65b9\u5f0f\u4e4b\u4e00\u3002\u5728\u67d0\u79cd\u7a0b\u5ea6\u4e0a\u6765\u8bf4\uff0cModbus \u901a\u4fe1\u534f\u8bae\u5c31\u662f\u5de5\u4e1a\u9886\u57df\u901a\u4fe1\u534f\u8bae\u7684\u4e1a\u754c\u6807\u51c6\u3002\u5728\u7269\u8054\u7f51\u84ec\u52c3\u53d1\u5c55\u7684\u5f53\u4e0b\uff0c\u4e86\u89e3\u5e76\u638c\u63e1\u5e7f\u6cdb\u5e94\u7528\u7684 Modbus \u901a\u4fe1\u534f\u8bae\u610f\u4e49\u91cd\u5927\u3002\n\n\u4e0b\u56fe\u5c55\u793a\u4e86 Modbus RTU \u7f51\u7edc\u7684\u8bbe\u5907\u8fde\u63a5\u3002\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2024\/04\/20240429003203377.jpg)\n\n## \u4e13\u4e1a\u672f\u8bed[\u200b](https:\/\/getiot.tech\/zh\/modbus\/modbus-intro#%E4%B8%93%E4%B8%9A%E6%9C%AF%E8%AF%AD)\n\n\u5728 Modbus \u5f00\u53d1\u4e2d\u7684\u5e38\u89c1\u4e13\u4e1a\u672f\u8bed\u5982\u4e0b\uff1a\n\n- Master \uff1a\u4e3b\uff08\u7ad9\uff09\u8bbe\u5907\n\n- Slave \uff1a\u4ece\uff08\u7ad9\uff09\u8bbe\u5907\n\n- Client \uff1a\u5ba2\u6237\u7aef\uff0c\u5bf9\u5e94 Master \u8bbe\u5907\n\n- Server \uff1a\u670d\u52a1\u5668\u7aef\uff0c\u5bf9\u5e94 Slave \u8bbe\u5907\n\n- ADU \uff1a\u5e94\u7528\u6570\u636e\u5355\u5143\uff08Application Data Unit\uff09\n\n- PDU \uff1a\u534f\u8bae\u6570\u636e\u5355\u5143\uff08Protocol Data Unit\uff09\n\n- MSB \uff1a\u6700\u9ad8\u6709\u6548\u4f4d\uff08Most Significant Bit\uff09\n\n- LSB \uff1a\u6700\u4f4e\u6709\u6548\u4f4d\uff08Least Significant Bit\uff09\n\n- MBAP \uff1aModbus \u5e94\u7528\u534f\u8bae\uff08Modbus Application Protocol\uff09\n\n- PLC \uff1a\u53ef\u7f16\u7a0b\u903b\u8f91\u63a7\u5236\u5668\uff08Programmable Logic Controller\uff09\n\n- RTU \uff1a\u8fdc\u7a0b\u7ec8\u7aef\u5355\u5143\uff08Remote Terminal Unit\uff09\n\n- SCADA \uff1a\u76d1\u7763\u63a7\u5236\u548c\u6570\u636e\u91c7\u96c6\uff08Supervisory Control And Data Acquisition\uff09\n\n---\n*modbus.cn*\n"