{"id":61897,"date":"2026-01-18T19:58:07","date_gmt":"2026-01-18T11:58:07","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/61897.html"},"modified":"2026-01-18T19:58:07","modified_gmt":"2026-01-18T11:58:07","slug":"%e9%80%9a%e8%ae%af%e5%8d%8f%e8%ae%ae%ef%bc%88%e4%b8%89%ef%bc%89-modbus%ef%bc%88%e5%ba%94%e7%94%a8%e5%b1%82%e9%80%9a%e8%ae%af%e5%8d%8f%e8%ae%ae%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/61897.html","title":{"rendered":"\u901a\u8baf\u534f\u8bae\uff08\u4e09\uff09\u2014\u2014Modbus\uff08\u5e94\u7528\u5c42\u901a\u8baf\u534f\u8bae\uff09"},"content":{"rendered":"

\u76ee\u5f55<\/p>\n

\u4e00\u3001Modbus\u534f\u8bae\u7b80\u4ecb<\/p>\n

\u4e8c\u3001Modbus\u534f\u8bae\u8be6\u89e3<\/p>\n

1\u3001Modbus RTU<\/p>\n

（1）\u5b58\u50a8\u533a\u53ca\u5176\u5730\u5740\u4ecb\u7ecd<\/p>\n

（2）\u529f\u80fd\u7801\u53ca\u5176\u4f5c\u7528<\/p>\n

（3）\u62a5\u6587\u683c\u5f0f<\/p>\n

（4）\u76f8\u5bf9\u5730\u5740\u4e0e\u7edd\u5bf9\u5730\u5740<\/p>\n

2\u3001Modbus ASCII<\/p>\n

3\u3001Modbus TCP\/IP<\/p>\n

（1）Modbus TCP\/IP\u4e0eRTU\u533a\u522b<\/p>\n

（2）Modbus TCP\/IP\u62a5\u6587\u683c\u5f0f<\/p>\n

\u62a5\u6587\u7ed3\u6784\u8be6\u89e3<\/p>\n

\u4e09\u3001\u5982\u4f55\u9009\u62e9\u534f\u8bae<\/p>\n

ModbusPoll\u5b89\u88c5\u5305<\/p>\n

\n

Modbus\u534f\u8bae\u4e2d\u6587\u7248: https:\/\/pan.baidu.com\/s\/1oxqQy9n8tVG-Go1asIHqhg \u63d0\u53d6\u7801: 8cyb<\/p>\n

Modbus\u534f\u8bae:https:\/\/pan.baidu.com\/s\/1MF1oIgo_b8XZoZseo-CkPA \u63d0\u53d6\u7801: bwe8<\/p>\n

ModbusPoll\u662f\u8c03\u8bd5Modbus\u901a\u8baf\u6700\u5e38\u7528\u7684\u8f6f\u4ef6，\u5176\u4f7f\u7528\u65b9\u6cd5\u4ee5\u540e\u4f1a\u7ed9\u51fa，\u5176\u5b9e\u8bfb\u61c2\u672c\u6587\u5bf9Modbus\u534f\u8bae\u7684\u89e3\u6790\u4e4b\u540e，\u6b64\u8f6f\u4ef6\u4fbf\u4f1a\u7528\u4e86，\u82e5\u4f7f\u7528\u6709\u95ee\u9898，\u6b22\u8fce\u7559\u8a00\u8be2\u95ee，\u8f6f\u4ef6\u5b89\u88c5\u5305\u5df2\u5728\u6587\u672b\u7ed9\u51fa\u3002<\/p>\n

\u4e00\u3001Modbus\u534f\u8bae\u7b80\u4ecb<\/h2>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Modbus\u901a\u8baf\u534f\u8bae\u662f\u5de5\u4e1a\u81ea\u52a8\u5316\u9886\u57df\u5e94\u7528\u6700\u5e7f\u6cdb\u7684\u901a\u4fe1\u534f\u8bae\u4e4b\u4e00，\u7531\u7f8e\u56fdModicon\u516c\u53f8（\u73b0\u5c5e\u65bd\u8010\u5fb7\u7535\u6c14）\u4e8e1979\u5e74\u4e3a\u5176PLC\u4ea7\u54c1\u8bbe\u8ba1\u3002\u6700\u521d\u76ee\u7684\u662f\u4e3a\u5de5\u4e1a\u8bbe\u5907\u63d0\u4f9b\u4e00\u79cd\u7b80\u5355\u3001\u901a\u7528\u7684\u901a\u4fe1\u65b9\u5f0f，\u4ee5\u5b9e\u73b0\u63a7\u5236\u5668\u4e0e\u73b0\u573a\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4ea4\u6362\u3002<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6838\u5fc3\u67b6\u6784\u662f\u4e3b\u4ece\u6a21\u5f0f，\u5373\u4e00\u4e3b\u591a\u4ece，\u5728\u540c\u4e00\u65f6\u95f4\u603b\u7ebf\u4e0a\u53ea\u80fd \u6709\u4e00\u4e2a\u4e3b\u8bbe\u5907,\u4f46\u53ef\u4ee5\u6709\u4e00\u4e2a\u6216\u8005\u591a\u4e2a(\u6700\u591a 247 \u4e2a)\u4ece\u8bbe\u5907\u3002\u8fd9\u4e0e\u4e4b\u524d\u4ecb\u7ecd\u7684\u51e0\u79cd\u534f\u8bae\u6709\u6240\u533a\u522b\u3002\u4e3b\u8981\u53d8\u79cd：Modbus RTU, Modbus ASCII, Modbus TCP\/IP\u3002 \u4e3b\u8981\u5e38\u89c1RS-485, RS-232，\u4e5f\u53ef\u57fa\u4e8e\u4ee5\u592a\u7f51（Modbus TCP）\u3002\u6700\u5927\u7684\u7279\u70b9\u662f\u6807\u51c6\u3001\u5f00\u653e\u3001\u7b80\u5355，\u53ef\u514d\u8d39\u4f7f\u7528，\u5e27\u683c\u5f0f\u7d27\u51d1\u6613\u61c2\u3002<\/p>\n\n Modbus RTU\u3001Modbus ASCII\u548cModbus TCP\/IP<\/p>\n\n\n\n\n\n\n\n
\u7279\u6027<\/td>\nModbus RTU<\/td>\nModbus ASCII<\/td>\nModbus TCP\/IP<\/td>\n<\/tr>\n
\u8fd0\u884c\u73af\u5883<\/td>\n\u4e32\u884c\u901a\u4fe1（\u5982RS-485, RS-232）<\/td>\n\u4e32\u884c\u901a\u4fe1（\u5982RS-485, RS-232）<\/td>\n\u4ee5\u592a\u7f51（TCP\/IP\u7f51\u7edc）<\/td>\n<\/tr>\n
\u6570\u636e\u7f16\u7801<\/td>\n\n

\u200b\u4e8c\u8fdb\u5236<\/p>\n<\/td>\n

ASCII\u5b57\u7b26<\/td>\n\u4e8c\u8fdb\u5236<\/td>\n<\/tr>\n
\u6821\u9a8c\u65b9\u5f0f<\/td>\nCRC（\u5faa\u73af\u5197\u4f59\u6821\u9a8c）<\/td>\nLRC（\u7eb5\u5411\u5197\u4f59\u6821\u9a8c）<\/td>\n\u7531TCP\/IP\u534f\u8bae\u6808\u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027<\/td>\n<\/tr>\n
\u7279\u70b9<\/td>\n\u6548\u7387\u9ad8\u3001\u7d27\u51d1，\u6700\u5e38\u7528\u7684\u4e32\u884c\u6a21\u5f0f<\/td>\n\u53ef\u8bfb\u6027\u5f3a\u3001\u6613\u4e8e\u8c03\u8bd5，\u4f46\u6548\u7387\u8f83\u4f4e<\/td>\n\u4f20\u8f93\u901f\u5ea6\u5feb，\u53ef\u5229\u7528\u73b0\u6709\u4ee5\u592a\u7f51\u8bbe\u65bd<\/td>\n<\/tr>\n
\u5178\u578b\u5e94\u7528<\/td>\nPLC\u3001\u4f20\u611f\u5668\u3001\u53d8\u9891\u5668\u7b49\u5de5\u4e1a\u8bbe\u5907\u73b0\u573a\u901a\u4fe1<\/td>\n\u9700\u4eba\u5de5\u8bfb\u53d6\u8c03\u8bd5\u7684\u6162\u901f\u6570\u636e\u4ea4\u6362\u573a\u666f<\/td>\n\u8f66\u95f4\u7ea7\u76d1\u63a7\u3001SCADA\u7cfb\u7edf\u3001\u8bbe\u5907\u8054\u7f51<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e8c\u3001Modbus\u534f\u8bae\u8be6\u89e3<\/h2>\n

1\u3001Modbus RTU<\/h3>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Modbus RTU：\u8fd9\u662f\u5de5\u4e1a\u73b0\u573a\u603b\u7ebf\u4e2d\u6700\u4e3b\u6d41\u7684\u5f62\u5f0f<\/span>\u3002\u5b83\u91c7\u7528\u4e8c\u8fdb\u5236\u7f16\u7801，\u6570\u636e\u5e27\u975e\u5e38\u7d27\u51d1，\u4f20\u8f93\u6548\u7387\u9ad8\u3002\u6bcf\u4e2a\u6570\u636e\u5e27\u90fd\u4ee5\u4e00\u6bb5\u6c89\u9ed8\u95f4\u9694\u5f00\u59cb\u548c\u7ed3\u675f，\u5e76\u901a\u8fc7CRC\u6821\u9a8c\u6765\u4fdd\u8bc1\u6570\u636e\u7684\u51c6\u786e\u6027，\u975e\u5e38\u9002\u5e94\u5de5\u4e1a\u73af\u5883\u4e0b\u7684\u6297\u5e72\u6270\u9700\u6c42\u3002<\/p>\n

（1）\u5b58\u50a8\u533a\u53ca\u5176\u5730\u5740\u4ecb\u7ecd<\/h4>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Modbus RTU\u534f\u8bae\u5c06\u8bbe\u5907\u7684\u6570\u636e\u7ec4\u7ec7\u5728\u56db\u4e2a\u6838\u5fc3\u5b58\u50a8\u533a\u4e2d，\u6bcf\u4e2a\u533a\u6709\u7279\u5b9a\u7684\u529f\u80fd\u548c\u5730\u5740\u8303\u56f4\u3002\u4e0b\u9762\u8fd9\u4e2a\u8868\u683c\u6c47\u603b\u4e86\u5b83\u4eec\u7684\u6838\u5fc3\u7279\u6027:<\/p>\n\n\n\n\n\n\n\n
\u5b58\u50a8\u533a\u540d\u79f0<\/td>\n\u8bfb\u5199\u7279\u6027<\/td>\n\u6570\u636e\u7c7b\u578b<\/td>\n\u529f\u80fd\u7801\u4e3e\u4f8b<\/td>\n5\u4f4d\u6807\u51c6\u5730\u5740\u8303\u56f4<\/td>\n6\u4f4d\u6269\u5c55\u5730\u5740\u8303\u56f4<\/td>\n<\/tr>\n
\u7ebf\u5708\u5bc4\u5b58\u5668 (Coils)<\/td>\n\u8bfb\/\u5199<\/td>\n\u4f4d (1 bit)<\/td>\n0x01 (\u8bfb), 0x05 (\u5199\u5355\u4e2a), 0x0F (\u5199\u591a\u4e2a)<\/td>\n00001 – 09999<\/td>\n000001 – 065536<\/td>\n<\/tr>\n
\u79bb\u6563\u8f93\u5165\u5bc4\u5b58\u5668 (Discrete Inputs)<\/td>\n\u53ea\u8bfb<\/td>\n\u4f4d (1 bit)<\/td>\n0x02 (\u8bfb)<\/td>\n10001 – 19999<\/td>\n100001 – 165536<\/td>\n<\/tr>\n
\u4fdd\u6301\u5bc4\u5b58\u5668 (Holding Registers)<\/td>\n\u8bfb\/\u5199<\/td>\n\n

\n

\u5b57 (16 bits)<\/p>\n<\/td>\n

0x03 (\u8bfb), 0x06 (\u5199\u5355\u4e2a), 0x10 (\u5199\u591a\u4e2a)<\/td>\n40001 – 49999<\/td>\n\n

\n

400001 – 465536<\/p>\n<\/td>\n<\/tr>\n

\u8f93\u5165\u5bc4\u5b58\u5668 (Input Registers)<\/td>\n\u53ea\u8bfb<\/td>\n\n

\n

\u5b57 (16 bits)<\/p>\n<\/td>\n

0x04 (\u8bfb)<\/td>\n30001 – 39999<\/td>\n300001 – 365536<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0 \u00a0\u5b58\u50a8\u533a\u8be6\u89e3\u4e0e\u4f7f\u7528\u8981\u70b9<\/p>\n

\u7ebf\u5708\u5bc4\u5b58\u5668 (0\u533a)：\u901a\u5e38\u7528\u6765\u63a7\u5236\u5f00\u5173\u91cf\u8bbe\u5907，\u6bd4\u5982\u7ee7\u7535\u5668\u7684\u901a\u65ad\u3001\u6307\u793a\u706f\u7684\u4eae\u706d\u3002\u6bcf\u4e2a\u7ebf\u5708\u7684\u72b6\u6001\u5c31\u662f\u4e00\u4e2a\u5e03\u5c14\u503c（0\u62161）\u3002<\/p>\n

\u79bb\u6563\u8f93\u5165\u5bc4\u5b58\u5668 (1\u533a)：\u7528\u4e8e\u8868\u793a\u53ea\u80fd\u8bfb\u53d6\u7684\u5f00\u5173\u91cf\u72b6\u6001，\u4f8b\u5982\u6309\u94ae\u662f\u5426\u88ab\u6309\u4e0b\u3001\u9650\u4f4d\u5f00\u5173\u662f\u5426\u89e6\u53d1\u7b49\u3002<\/p>\n

\u4fdd\u6301\u5bc4\u5b58\u5668 (4\u533a)：\u6700\u5e38\u89c1\u7684\u7528\u4e8e\u5b58\u50a8\u6570\u636e\u7684\u533a\u57df，\u53ef\u8bfb\u53ef\u5199\u3002\u5e38\u7528\u6765\u5b58\u653e\u8bbe\u5907\u53c2\u6570（\u5982\u8bbe\u5b9a\u6e29\u5ea6\u3001\u901f\u5ea6）\u3001\u8ba1\u6570\u5668\u503c\u7b49\u3002\u6bcf\u4e2a\u5bc4\u5b58\u5668\u53ef\u4ee5\u5b58\u50a8\u4e00\u4e2a16\u4f4d\u7684\u6574\u6570，\u6216\u591a\u4e2a\u5bc4\u5b58\u5668\u7ec4\u5408\u5b58\u50a8\u6d6e\u70b9\u6570\u7b49\u590d\u6742\u6570\u636e\u3002<\/p>\n

\u8f93\u5165\u5bc4\u5b58\u5668 (3\u533a)：\u7528\u4e8e\u5b58\u50a8\u4ece\u5916\u90e8\u91c7\u96c6\u7684\u3001\u53ea\u8bfb\u7684\u6570\u636e，\u4f8b\u5982\u6e29\u5ea6\u4f20\u611f\u5668\u7684\u8bfb\u6570\u3001\u7535\u538b\u7535\u6d41\u503c\u7b49\u3002<\/p>\n

\u5730\u5740\u7f16\u53f7\u89c4\u5219<\/p>\n

Modbus\u8bbe\u5907\u901a\u5e38\u652f\u6301\u4e24\u79cd\u5730\u5740\u7f16\u53f7\u65b9\u5f0f：5\u4f4d\u6807\u51c6\u5730\u5740\u548c6\u4f4d\u6269\u5c55\u5730\u5740\u3002<\/p>\n

5\u4f4d\u6807\u51c6\u5730\u5740：\u8fd9\u662f\u6700\u4f20\u7edf\u7684\u683c\u5f0f，\u5730\u5740\u8303\u56f4\u5982\u4e0a\u8868\u6240\u793a\u3002\u5730\u5740\u7684\u7b2c\u4e00\u4f4d\u6570\u5b57（\u524d\u7f00）\u7528\u4e8e\u533a\u5206\u4e0d\u540c\u7684\u5b58\u50a8\u533a\u3002<\/p>\n

6\u4f4d\u6269\u5c55\u5730\u5740：\u4e3a\u4e86\u652f\u6301\u66f4\u5927\u7684\u6570\u636e\u5bb9\u91cf，\u8bb8\u591a\u73b0\u4ee3\u8bbe\u5907\u91c7\u7528\u4e866\u4f4d\u5730\u5740\u683c\u5f0f，\u5c06\u6bcf\u4e2a\u5b58\u50a8\u533a\u7684\u5bfb\u5740\u8303\u56f4\u6269\u5c55\u5230\u4e86\u6700\u591a65536\u4e2a\u5355\u5143\u3002<\/p>\n

\u7edd\u5bf9\u5730\u5740\u4e0e \u76f8\u5bf9\u5730\u5740<\/p>\n

\u7406\u89e3\u8fd9\u4e24\u79cd\u5730\u5740\u7684\u533a\u522b\u5bf9\u6b63\u786e\u8fdb\u884c\u901a\u4fe1\u81f3\u5173\u91cd\u8981：<\/p>\n

\u7edd\u5bf9\u5730\u5740：\u8fd9\u662f\u5728\u8bbe\u5907\u624b\u518c\u3001\u7ec4\u6001\u8f6f\u4ef6\u6216HMI\u754c\u9762\u4e0a\u770b\u5230\u7684\u5730\u5740\u7f16\u53f7，\u4f8b\u598240001\u3002\u5b83\u662f\u4e00\u4e2a\u4fbf\u4e8e\u4eba\u7c7b\u8bc6\u522b\u7684\u201c\u6807\u7b7e\u201d\u3002<\/p>\n

\u76f8\u5bf9\u5730\u5740：\u8fd9\u662f\u5728\u5b9e\u9645\u901a\u4fe1\u62a5\u6587\u4e2d\u4f7f\u7528\u7684\u5730\u5740\u3002\u5b83\u662f\u4ece\u6bcf\u4e2a\u5b58\u50a8\u533a\u7684\u8d77\u59cb\u4f4d\u7f6e\u5f00\u59cb\u8ba1\u7b97\u7684\u504f\u79fb\u91cf\u3002\u4f8b\u5982，\u7edd\u5bf9\u5730\u574040001\u5bf9\u5e94\u7684\u76f8\u5bf9\u5730\u5740\u662f0000；\u7edd\u5bf9\u5730\u574040002\u5bf9\u5e94\u7684\u76f8\u5bf9\u5730\u5740\u662f0001，\u4ee5\u6b64\u7c7b\u63a8\u3002<\/p>\n

\u5f53\u4f60\u5728\u7f16\u7a0b\u6216\u914d\u7f6e\u4e3b\u7ad9\u8bbe\u5907（\u5982PLC\u3001SCADA\u7cfb\u7edf）\u65f6，\u9700\u8981\u6839\u636e\u8bbe\u5907\u7684\u8bf4\u660e\u4e66，\u5c06\u624b\u518c\u4e2d\u7ed9\u51fa\u7684\u7edd\u5bf9\u5730\u5740\u8f6c\u6362\u4e3a\u76f8\u5e94\u7684\u76f8\u5bf9\u5730\u5740\u586b\u5165\u901a\u4fe1\u6307\u4ee4\u4e2d\u3002<\/p>\n

（2）\u529f\u80fd\u7801\u53ca\u5176\u4f5c\u7528<\/h4>\n

Modbus\u534f\u8bae\u4e3b\u8981\u901a\u8fc7\u529f\u80fd\u7801（Function Code）\u200b \u6765\u7ea6\u5b9a\u4e0d\u540c\u8bbe\u5907\u7684\u884c\u4e3a\u3002\u4e0b\u8868\u5217\u4e3e\u4e86\u4e00\u4e9b\u6700\u5e38\u7528\u7684\u529f\u80fd\u7801：<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
\u529f\u80fd\u7801(\u5341\u516d\u8fdb\u5236)<\/td>\n\u540d\u79f0<\/td>\n\u4f5c\u7528<\/td>\n<\/tr>\n
01H<\/td>\n\u8bfb\u7ebf\u5708\u72b6\u6001<\/td>\n\u8bfb\u53d6\u4e00\u7ec4\u5f00\u5173\u91cf\u8f93\u51fa（DO）\u7684\u72b6\u6001（ON\/OFF）<\/td>\n<\/tr>\n
02H<\/td>\n\u8bfb\u8f93\u5165\u72b6\u6001<\/td>\n\u8bfb\u53d6\u4e00\u7ec4\u5f00\u5173\u91cf\u8f93\u5165（DI）\u7684\u72b6\u6001（ON\/OFF）<\/td>\n<\/tr>\n
03H<\/td>\n\u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668<\/span><\/td>\n\u975e\u5e38\u5e38\u7528\u3002\u8bfb\u53d6\u4ece\u8bbe\u5907\u4fdd\u6301\u5bc4\u5b58\u5668（\u5982PLC\u7684\u6570\u636e\u5757）\u4e2d\u7684\u5185\u5bb9<\/td>\n<\/tr>\n
04H<\/td>\n\u8bfb\u8f93\u5165\u5bc4\u5b58\u5668<\/td>\n\u8bfb\u53d6\u4ece\u8bbe\u5907\u8f93\u5165\u5bc4\u5b58\u5668\u4e2d\u7684\u5185\u5bb9（\u5982\u6a21\u62df\u91cf\u8f93\u5165\u503c）<\/td>\n<\/tr>\n
05H<\/td>\n\u5199\u5355\u4e2a\u7ebf\u5708<\/td>\n\u5f3a\u5236\u4e00\u4e2a\u7ebf\u5708\u4e3aON\u6216OFF（\u5b9e\u73b0\u5355\u4e2a\u5f00\u5173\u63a7\u5236）<\/td>\n<\/tr>\n
06H<\/td>\n\u5199\u5355\u4e2a\u5bc4\u5b58\u5668<\/td>\n\u5411\u4e00\u4e2a\u4fdd\u6301\u5bc4\u5b58\u5668\u5199\u5165\u9884\u8bbe\u503c（\u5982\u4fee\u6539\u4e00\u4e2a\u8bbe\u5b9a\u53c2\u6570）<\/td>\n<\/tr>\n
0FH<\/td>\n\u5199\u591a\u4e2a\u7ebf\u5708<\/td>\n\u5411\u591a\u4e2a\u8fde\u7eed\u7684\u7ebf\u5708\u5199\u5165\u6570\u636e<\/td>\n<\/tr>\n
10H<\/td>\n\u5199\u591a\u4e2a\u5bc4\u5b58\u5668<\/span><\/td>\n\u975e\u5e38\u5e38\u7528\u3002\u5411\u591a\u4e2a\u8fde\u7eed\u7684\u4fdd\u6301\u5bc4\u5b58\u5668\u5199\u5165\u6570\u636e（\u5982\u6279\u91cf\u4e0b\u53d1\u6539\u5b9a\u503c）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

（3）\u62a5\u6587\u683c\u5f0f<\/h4>\n

Modbus \u534f\u8bae RTU \u62a5\u6587\u683c\u5f0f\u5982\u4e0b\u6240\u793a：<\/p>\n

\"\"<\/p>\n\n\n\n\n\n\n\n
\u7ec4\u6210\u90e8\u5206<\/td>\n\u957f\u5ea6 (\u5b57\u8282)<\/td>\n\u63cf\u8ff0\u4e0e\u8981\u70b9<\/td>\n<\/tr>\n
\u8bbe\u5907\u5730\u5740<\/td>\n1<\/td>\n\u6807\u8bc6\u603b\u7ebf\u4e0a\u7684\u4ece\u7ad9\u8bbe\u5907，\u8303\u56f4\u901a\u5e38\u4e3a 1-247\u3002\u5730\u57400\u4e3a\u5e7f\u64ad\u5730\u5740\u3002<\/td>\n<\/tr>\n
\u529f\u80fd\u7801<\/td>\n1<\/td>\n\u5b9a\u4e49\u8bf7\u6c42\u7684\u64cd\u4f5c\u7c7b\u578b，\u5982 0x03\u4e3a\u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668，0x10\u4e3a\u5199\u591a\u4e2a\u5bc4\u5b58\u5668\u3002<\/td>\n<\/tr>\n
\u6570\u636e\u57df<\/td>\nN<\/td>\n\u53d8\u957f\u5b57\u6bb5，\u5185\u5bb9\u53d6\u51b3\u4e8e\u529f\u80fd\u7801\u3002\u4f8b\u5982，\u8bfb\u5bc4\u5b58\u5668\u8bf7\u6c42\u4e2d\u5305\u542b\u8d77\u59cb\u5730\u5740\u548c\u6570\u91cf；\u54cd\u5e94\u4e2d\u5219\u5305\u542b\u8bfb\u53d6\u5230\u7684\u6570\u636e\u3002<\/td>\n<\/tr>\n
CRC\u6821\u9a8c<\/td>\n2<\/td>\n\u5faa\u73af\u5197\u4f59\u6821\u9a8c\u7801，\u7528\u4e8e\u68c0\u6d4b\u4f20\u8f93\u9519\u8bef\u3002\u91c7\u7528CRC-16\u7b97\u6cd5，\u591a\u9879\u5f0f\u4e3a 0xA001\u3002\u4f20\u8f93\u65f6\u4f4e\u5b57\u8282\u5728\u524d\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5206\u6790\u4e00\u6bb5\u76d1\u63a7\u5230\u7684\u62a5\u6587\u6765\u52a0\u6df1\u7406\u89e3：<\/p>\n

（\u4e3b）\u53d1\u9001：01 03 00 00 00 02 C4 0B<\/p>\n

\u00a001 \u4ece\u7ad9\u5730\u5740；03 \u8bfb\u8f93\u51fa\u5bc4\u5b58\u5668；00 00 \u8d77\u59cb\u5bc4\u5b58\u5668；00 02 \u5bc4\u5b58\u5668\u957f\u5ea6；C4 0B CRC\u6821\u9a8c\u3002<\/p>\n

（\u4e3b）\u63a5\u6536：01 03 04 01 46 01 3B 5A 59<\/p>\n

01 \u4ece\u7ad9\u5730\u5740；03 \u8bfb\u8f93\u51fa\u5bc4\u5b58\u5668；04 \u5b57\u8282\u8ba1\u6570；01 46 01 3B \u5177\u4f534\u4e2a\u5b57\u8282；5A 59 CRC\u6821\u9a8c\u3002<\/p>\n

（4）\u76f8\u5bf9\u5730\u5740\u4e0e\u7edd\u5bf9\u5730\u5740<\/h4>\n

\u7406\u89e3Modbus\u534f\u8bae\u4e2d\u7684\u76f8\u5bf9\u5730\u5740\u4e0e\u7edd\u5bf9\u5730\u5740，\u662f\u786e\u4fdd\u901a\u4fe1\u6210\u529f\u7684\u5173\u952e\u3002<\/p>\n\n\n\n\n\n\n\n\n
\u7279\u6027<\/td>\n\u7edd\u5bf9\u5730\u5740 (Absolute Address)<\/td>\n\u76f8\u5bf9\u5730\u5740 (Relative Address)<\/td>\n<\/tr>\n
\u5b9a\u4e49<\/td>\n\u5305\u542b\u5b58\u50a8\u533a\u4ee3\u53f7\u7684\u5b8c\u6574\u5730\u5740，\u662f\u7ed9\u4eba\u770b\u7684\u201c\u95e8\u724c\u53f7\u201d<\/td>\n\u4e0d\u5305\u542b\u5b58\u50a8\u533a\u4ee3\u53f7，\u4ec5\u8868\u793a\u5728\u67d0\u4e2a\u5b58\u50a8\u533a\u5185\u7684\u504f\u79fb\u91cf，\u662f\u534f\u8bae\u5b9e\u9645\u4f20\u8f93\u7684\u201c\u623f\u95f4\u53f7\u201d<\/td>\n<\/tr>\n
\u8868\u73b0\u5f62\u5f0f<\/td>\n\u901a\u5e38\u4e3a5\u4f4d\u62166\u4f4d\u6570\u5b57，\u5982 40001, 300001<\/td>\n\u4ece0\u5f00\u59cb\u7684\u6574\u6570，\u5982 0, 9, 99<\/td>\n<\/tr>\n
\n

\u529f\u80fd\u7801\u4f9d\u8d56\u200b<\/p>\n<\/td>\n

\u72ec\u7acb，\u901a\u8fc7\u5730\u5740\u672c\u8eab\u5373\u53ef\u786e\u5b9a\u5b58\u50a8\u533a<\/td>\n\u9ad8\u5ea6\u4f9d\u8d56，\u5fc5\u987b\u7ed3\u5408\u529f\u80fd\u7801\u624d\u80fd\u786e\u5b9a\u64cd\u4f5c\u54ea\u4e2a\u5b58\u50a8\u533a<\/td>\n<\/tr>\n
\u4e3b\u8981\u5e94\u7528\u573a\u666f<\/td>\n\u8bbe\u5907\u624b\u518c\u3001\u5de5\u7a0b\u5e08\u6c9f\u901a\u3001\u8f6f\u4ef6\u914d\u7f6e\u754c\u9762<\/td>\nModbus\u534f\u8bae\u6570\u636e\u5e27\u5185\u90e8<\/td>\n<\/tr>\n
\u793a\u4f8b<\/td>\n\u624b\u518c\u6ce8\u660e\u201c\u6e29\u5ea6\u503c\u572840010\u5730\u5740\u201d<\/td>\n\u529f\u80fd\u780103\u7684\u62a5\u6587\u4e2d，\u5730\u5740\u5b57\u6bb5\u586b\u5199 0009（\u5341\u516d\u8fdb\u5236）\u6765\u8bfb\u53d640010\u5730\u5740\u7684\u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2\u3001Modbus ASCII<\/h3>\n

Modbus ASCII：\u8fd9\u79cd\u6a21\u5f0f\u4f7f\u7528\u53ef\u6253\u5370\u7684ASCII\u5b57\u7b26\u6765\u7f16\u7801\u6570\u636e\u3002\u867d\u7136\u4f20\u8f93\u6548\u7387\u8f83\u4f4e，\u4f46\u4f18\u70b9\u662f\u53d1\u9001\u7684\u6570\u636e\u53ef\u4ee5\u76f4\u63a5\u88ab\u7ec8\u7aef\u8f6f\u4ef6\u663e\u793a\u6216\u4eba\u5de5\u89e3\u8bfb，\u975e\u5e38\u4fbf\u4e8e\u8c03\u8bd5\u548c\u8bca\u65ad\u3002\u5b83\u4f7f\u7528LRC\u8fdb\u884c\u6821\u9a8c\u3002\u6d88\u606f\u4ee5\u5192\u53f7（:）\u5f00\u59cb，\u4ee5\u56de\u8f66\u6362\u884c\u7b26（CR, LF）\u7ed3\u675f\u3002<\/p>\n

\u62a5\u6587\u683c\u5f0f\u4e0eModbus RTU\u4e00\u6837：\u8bbe\u5907\u5730\u5740+\u529f\u80fd\u7801+\u6570\u636e\u57df+CRC\u6821\u9a8c\u3002<\/p>\n

\u53ef\u8bfb\u7684\u6587\u672c\u683c\u5f0f：\u8fd9\u662f\u6700\u672c\u8d28\u7684\u533a\u522b\u3002Modbus ASCII \u5c06\u6bcf\u4e2a\u6570\u636e\u5b57\u8282（\u5982 0x4F）\u7528\u4e24\u4e2a\u5bf9\u5e94\u7684ASCII\u5b57\u7b26（\u5373 '4'\u548c 'F'）\u6765\u8868\u793a\u3002\u56e0\u6b64，\u7528\u666e\u901a\u7684\u4e32\u53e3\u8c03\u8bd5\u52a9\u624b\u6355\u83b7\u5230\u7684\u62a5\u6587\u662f\u50cf :010300000001FB\\\\r\\\\n\u8fd9\u6837\u7684\u53ef\u8bfb\u5b57\u7b26\u4e32，\u975e\u5e38\u4fbf\u4e8e\u4eba\u5de5\u9605\u8bfb\u548c\u8c03\u8bd5\u3002<\/p>\n

\u5bbd\u677e\u7684\u65f6\u5e8f\u8981\u6c42：\u7531\u4e8e\u6709\u660e\u786e\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u6807\u5fd7，Modbus ASCII \u5bf9\u5e27\u5185\u5b57\u7b26\u4e4b\u95f4\u7684\u4f20\u8f93\u95f4\u9694\u8981\u6c42\u5f88\u5bbd\u677e（\u6700\u957f\u53ef\u8fbe1\u79d2），\u8fd9\u4f7f\u5176\u5728\u901a\u4fe1\u8d28\u91cf\u4e0d\u4f73\u6216\u6ce2\u7279\u7387\u4e0d\u7a33\u5b9a\u7684\u4f4e\u901f\u573a\u666f\u4e2d\u66f4\u5177\u9002\u5e94\u6027\u3002<\/p>\n

\u6548\u7387\u4e0e\u9002\u7528\u573a\u666f：\u6587\u672c\u7f16\u7801\u7684\u4ee3\u4ef7\u662f\u4f20\u8f93\u6548\u7387\u8f83\u4f4e\u3002\u540c\u6837\u4e00\u6761\u6307\u4ee4，Modbus ASCII \u5e27\u7684\u957f\u5ea6\u7ea6\u4e3a RTU \u5e27\u7684\u4e24\u500d\u3002\u56e0\u6b64，\u5b83\u901a\u5e38\u7528\u4e8e\u6570\u636e\u91cf\u5c0f\u3001\u901f\u7387\u4f4e\u3001\u6216\u9700\u8981\u9891\u7e41\u4eba\u5de5\u4ecb\u5165\u8c03\u8bd5\u7684\u573a\u5408，\u4f8b\u5982\u8fde\u63a5\u4e00\u4e9b\u8001\u65e7\u7684\u5de5\u4e1a\u8bbe\u5907\u6216\u5b9e\u9a8c\u5ba4\u4eea\u5668\u3002\u800c\u5bf9\u4e8e\u9ad8\u901f\u3001\u5927\u6570\u636e\u91cf\u7684\u5de5\u4e1a\u73b0\u573a\u901a\u4fe1，Modbus RTU \u662f\u7edd\u5bf9\u7684\u4e3b\u6d41\u9009\u62e9\u3002<\/p>\n

\u7b80\u5355\u6765\u8bf4，\u60a8\u53ef\u4ee5\u5c06 Modbus ASCII \u7406\u89e3\u4e3a RTU \u7684\u201c\u6587\u672c\u7248\u201d，\u727a\u7272\u4e86\u6548\u7387，\u6362\u6765\u4e86\u66f4\u9ad8\u7684\u53ef\u8bfb\u6027\u548c\u5bf9\u901a\u4fe1\u6761\u4ef6\u7684\u5bb9\u5fcd\u5ea6\u3002\u603b\u4f53\u6765\u8bf4\u4e0eRTU\u5dee\u522b\u4e0d\u5927\u3002<\/p>\n

3\u3001Modbus TCP\/IP<\/h3>\n

（1）Modbus TCP\/IP\u4e0eRTU\u533a\u522b<\/h4>\n

Modbus TCP\/IP\u901a\u8fc7IP\u5730\u5740\u533a\u5206\u4ece\u673a；TCP\/IP\u6570\u636e\u5305\u4e2d\u5df2\u5b58\u5728\u6821\u9a8c\u3002<\/p>\n

\"\"<\/p>\n

（2）Modbus TCP\/IP\u62a5\u6587\u683c\u5f0f<\/h4>\n

Modbus TCP\/IP：\u8fd9\u662fModbus\u534f\u8bae\u8fd0\u884c\u5728\u4ee5\u592a\u7f51\u4e0a\u7684\u7248\u672c\u3002\u4e3a\u4e86\u9002\u5e94TCP\/IP\u534f\u8bae\u6808，\u5b83\u5728\u6807\u51c6\u7684Modbus\u534f\u8bae\u6570\u636e\u5355\u5143（PDU）\u524d\u589e\u52a0\u4e86\u4e00\u4e2aMBAP\u62a5\u6587\u5934\u3002\u8fd9\u4e2a\u62a5\u6587\u5934\u5305\u542b\u4e86\u4e8b\u52a1\u6807\u8bc6\u7b26\u3001\u534f\u8bae\u6807\u8bc6\u7b26\u3001\u957f\u5ea6\u548c\u5355\u5143\u6807\u8bc6\u7b26\u7b49\u4fe1\u606f，\u7528\u4e8e\u5728\u7f51\u7edc\u73af\u5883\u4e2d\u7ba1\u7406\u901a\u4fe1\u4f1a\u8bdd\u3002\u7531\u4e8e\u5e95\u5c42TCP\u534f\u8bae\u5df2\u7ecf\u63d0\u4f9b\u4e86\u53ef\u9760\u7684\u8fde\u63a5，\u56e0\u6b64\u4e0d\u518d\u9700\u8981CRC\u6216LRC\u6821\u9a8c\u3002\u5b83\u9ed8\u8ba4\u4f7f\u7528502\u7aef\u53e3\u3002<\/p>\n

Modbus TCP\/IP\u7684\u62a5\u6587\u683c\u5f0f\u5982\u4e0b：<\/p>\n

\"\"<\/p>\n

\u62a5\u6587\u7ed3\u6784\u8be6\u89e3<\/h4>\n

\u6574\u4e2a\u62a5\u6587\u53ef\u4ee5\u7406\u89e3\u4e3a\u5728\u6807\u51c6\u7684 Modbus \u6307\u4ee4\u5916\u9762，\u5957\u4e0a\u4e86\u4e00\u4e2a\u9002\u5e94\u7f51\u7edc\u73af\u5883\u7684\u201c\u4fe1\u5c01\u201d\u3002<\/p>\n

1）MBAP \u62a5\u6587\u5934（Modbus Application Protocol Header）<\/p>\n

\u8fd9\u662f Modbus TCP\/IP \u7279\u6709\u7684\u90e8\u5206，\u5171 7 \u4e2a\u5b57\u8282，\u7528\u4e8e\u7f51\u7edc\u901a\u4fe1\u7684\u7ba1\u7406\u3002\u60a8\u53ef\u4ee5\u5c06\u5176\u7406\u89e3\u4e3a\u4e00\u4e2a\u201c\u5feb\u9012\u9762\u5355\u201d\u3002<\/p>\n

    \n
  • \n

    \u4e8b\u52a1\u5904\u7406\u6807\u8bc6\u7b26（2 \u5b57\u8282）：\u8fd9\u662f\u7531\u5ba2\u6237\u7aef（\u4e3b\u7ad9）\u751f\u6210\u7684\u552f\u4e00\u7f16\u53f7，\u7528\u4e8e\u5339\u914d\u8bf7\u6c42\u548c\u54cd\u5e94\u3002\u670d\u52a1\u5668（\u4ece\u7ad9）\u5728\u8fd4\u56de\u54cd\u5e94\u65f6\u5fc5\u987b\u539f\u6837\u8fd4\u56de\u6b64\u6807\u8bc6\u7b26\u3002\u8fd9\u89e3\u51b3\u4e86\u5728\u7f51\u7edc\u4e2d\u53ef\u80fd\u540c\u65f6\u5b58\u5728\u591a\u4e2a\u672a\u5b8c\u6210\u8bf7\u6c42\u65f6，\u5982\u4f55\u6b63\u786e\u914d\u5bf9\u7684\u95ee\u9898\u3002<\/p>\n<\/li>\n

  • \n

    \u534f\u8bae\u6807\u8bc6\u7b26（2 \u5b57\u8282）：\u7528\u4e8e\u6807\u8bc6\u8fd9\u662f Modbus \u534f\u8bae\u3002\u56fa\u5b9a\u4e3a 0，\u5176\u4ed6\u503c\u901a\u5e38\u88ab\u89c6\u4e3a\u975e\u6cd5\u3002<\/p>\n<\/li>\n

  • \n

    \u957f\u5ea6\u5b57\u6bb5（2 \u5b57\u8282）：\u6307\u793a\u5176\u540e\u6240\u6709\u5b57\u8282\u7684\u6570\u91cf\u3002\u5177\u4f53\u6765\u8bf4，\u662f\u4ece\u4e0b\u4e00\u4e2a\u5b57\u8282（\u5373\u5355\u5143\u6807\u8bc6\u7b26）\u5f00\u59cb，\u5230\u6574\u4e2a PDU \u7ed3\u675f\u7684\u5b57\u8282\u6570\u3002\u4f8b\u5982，\u4e00\u4e2a\u5178\u578b\u7684\u8bfb\u5bc4\u5b58\u5668\u8bf7\u6c42（\u5355\u5143\u6807\u8bc6\u7b261 + \u529f\u80fd\u78011 + \u5730\u57402 + \u6570\u91cf2 = 6\u5b57\u8282），\u6b64\u5b57\u6bb5\u503c\u5c31\u662f6\u3002<\/p>\n<\/li>\n

  • \n

    \u5355\u5143\u6807\u8bc6\u7b26（1 \u5b57\u8282）：\u8fd9\u4e2a\u5b57\u6bb5\u7684\u4f5c\u7528\u7c7b\u4f3c\u4e8e Modbus RTU \u4e2d\u7684\u4ece\u7ad9\u5730\u5740，\u4f46\u5b83\u662f\u5728TCP\/IP\u7f51\u7edc\u5185\u90e8\u4f7f\u7528\u7684\u3002\u5f53\u4e00\u4e2aTCP\u8fde\u63a5（\u4f8b\u5982，\u901a\u8fc7\u7f51\u5173）\u540e\u7aef\u8fde\u63a5\u4e86\u591a\u4e2a\u4e32\u884c\u8bbe\u5907\u65f6，\u6b64\u5b57\u6bb5\u7528\u4e8e\u6307\u5b9a\u6700\u7ec8\u8981\u8bbf\u95ee\u7684\u4ece\u7ad9\u8bbe\u5907\u3002\u5982\u679c\u53ea\u6709\u4e00\u4e2a\u8bbe\u5907，\u901a\u5e38\u8bbe\u4e3a 1 \u6216 255\u3002<\/p>\n<\/li>\n<\/ul>\n

    2） PDU \u62a5\u6587（\u534f\u8bae\u6570\u636e\u5355\u5143）<\/p>\n

    \u8fd9\u90e8\u5206\u662f\u6807\u51c6\u7684 Modbus \u534f\u8bae\u5185\u5bb9，\u4e0e\u60a8\u5728 RTU \u6216 ASCII \u6a21\u5f0f\u4e2d\u770b\u5230\u7684\u6838\u5fc3\u90e8\u5206\u5b8c\u5168\u76f8\u540c\u3002\u5b83\u5305\u542b\u4e86\u5177\u4f53\u7684\u64cd\u4f5c\u6307\u4ee4\u3002<\/p>\n

      \n
    • \n

      \u529f\u80fd\u7801（1 \u5b57\u8282）：\u5b9a\u4e49\u8981\u6267\u884c\u7684\u64cd\u4f5c，\u4f8b\u5982 0x03\u662f\u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668，0x10\u662f\u5199\u591a\u4e2a\u5bc4\u5b58\u5668\u3002\u8fd9\u4e0e Modbus RTU \u4e2d\u7684\u529f\u80fd\u7801\u5b8c\u5168\u4e00\u81f4\u3002<\/p>\n<\/li>\n

    • \n

      \u6570\u636e\u533a（N \u5b57\u8282）：\u529f\u80fd\u7801\u6240\u5e26\u7684\u53c2\u6570\u3002\u4f8b\u5982，\u8bfb\u8bf7\u6c42 (0x03) \u7684\u6570\u636e\u533a\u5305\u542b\u201c\u8d77\u59cb\u5730\u5740\u201d\u548c\u201c\u5bc4\u5b58\u5668\u6570\u91cf\u201d；\u54cd\u5e94 (0x03) \u7684\u6570\u636e\u533a\u5219\u5305\u542b\u201c\u5b57\u8282\u6570\u201d\u548c\u201c\u5bc4\u5b58\u5668\u7684\u503c\u201d\u3002<\/p>\n<\/li>\n<\/ul>\n

      \u4e09\u3001\u5982\u4f55\u9009\u62e9\u534f\u8bae<\/h2>\n

      \u5728\u9009\u62e9\u5408\u9002\u7684Modbus\u534f\u8bae\u65f6，\u53ef\u4ee5\u9075\u5faa\u4e00\u4e2a\u7b80\u5355\u7684\u539f\u5219：\u6839\u636e\u901a\u4fe1\u4ecb\u8d28\u548c\u901f\u5ea6\u9700\u6c42\u6765\u51b3\u7b56\u3002<\/p>\n

      \u9700\u8981\u9ad8\u901f\u3001\u8fdc\u8ddd\u79bb\u901a\u4fe1，\u6216\u96c6\u6210\u5230\u73b0\u6709\u4f01\u4e1a\u7f51\u7edc：\u200b \u4f18\u5148\u9009\u62e9 Modbus TCP\/IP\u3002\u5b83\u9002\u5408\u8f66\u95f4\u7ea7\u7684\u6570\u636e\u91c7\u96c6\u548c\u76d1\u63a7\u7cfb\u7edf（SCADA）\u3002<\/p>\n

      \u5728\u8bbe\u5907\u73b0\u573a\u8fdb\u884c\u5e03\u7ebf，\u8ffd\u6c42\u9ad8\u53ef\u9760\u6027\u548c\u5b9e\u65f6\u6027：\u200b \u9009\u62e9 Modbus RTU\u3002\u5b83\u662f\u5de5\u4e1a\u63a7\u5236\u67dc\u5185\u8bbe\u5907\u901a\u4fe1\u7684\u7edd\u5bf9\u4e3b\u529b\u3002<\/p>\n

      \u901a\u4fe1\u901f\u7387\u8981\u6c42\u4e0d\u9ad8，\u4f46\u9700\u8981\u9891\u7e41\u67e5\u770b\u6570\u636e\u5185\u5bb9\u8fdb\u884c\u8c03\u8bd5：\u200b \u53ef\u4ee5\u8003\u8651 Modbus ASCII\u3002\u5b83\u5728\u8c03\u8bd5\u6216\u9700\u8981\u9ad8\u53ef\u8bfb\u6027\u7684\u6162\u901f\u573a\u666f\u4e2d\u6709\u5176\u4ef7\u503c\u3002<\/p>\n<\/p>\n

      ModbusPoll\u5b89\u88c5\u5305<\/h2>\n

      https:\/\/pan.baidu.com\/s\/18-c1qmXULNfa7JxVXGk8Xw \u63d0\u53d6\u7801: c446<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u76ee\u5f55
      \n\u4e00\u3001Modbus\u534f\u8bae\u7b80\u4ecb
      \n\u4e8c\u3001Modbus\u534f\u8bae\u8be6\u89e3
      \n1\u3001Modbus RTU
      \n（1）\u5b58\u50a8\u533a\u53ca\u5176\u5730\u5740\u4ecb\u7ecd
      \n（2）\u529f\u80fd\u7801\u53ca\u5176\u4f5c\u7528
      \n（3）\u62a5\u6587\u683c\u5f0f
      \n（4）\u76f8\u5bf9\u5730\u5740\u4e0e\u7edd\u5bf9\u5730\u5740
      \n2\u3001Modbus ASCII
      \n3\u3001Modbus TCP\/IP
      \n（1）Modbus TCP\/IP\u4e0eRTU\u533a\u522b
      \n（2）M<\/p>\n","protected":false},"author":2,"featured_media":61894,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[6560,6559,5292,205],"topic":[],"class_list":["post-61897","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-ascii","tag-rtu","tag-modbus","tag-tcp-ip"],"yoast_head":"\n\u901a\u8baf\u534f\u8bae\uff08\u4e09\uff09\u2014\u2014Modbus\uff08\u5e94\u7528\u5c42\u901a\u8baf\u534f\u8bae\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/61897.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u901a\u8baf\u534f\u8bae\uff08\u4e09\uff09\u2014\u2014Modbus\uff08\u5e94\u7528\u5c42\u901a\u8baf\u534f\u8bae\uff09 - 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