"# \u4e86\u89e3\u8bbe\u5907\u63a5\u5165\u534f\u8bae\n\n> 2024-04-02 | 2024-04-02\n> https:\/\/www.modbus.cn\/en\/docs\/liao-jie-she-bei-jie-ru-xie-yi\n\n---\n\n\u4e86\u89e3\u8bbe\u5907\u8fde\u7f51\u65b9\u5f0f\u540e\uff0c\u6211\u4eec\u63a5\u4e0b\u6765\u5173\u5fc3\u7684\u662f\uff0c\u8bbe\u5907\u548c\u4e91\u5e73\u53f0\u5982\u4f55\u4ea4\u6362\u6570\u636e\uff0c\u8fd9\u5c31\u6d89\u53ca\u5230\u8bbe\u5907\u548c\u4e91\u5e73\u53f0\u7684\u63a5\u5165\u901a\u4fe1\u534f\u8bae\u3002\n\n\u8fd9\u4e00\u8282\uff0c\u6211\u4eec\u5c06\u7b80\u8981\u4ecb\u7ecd\u4e91\u5e73\u53f0\u652f\u6301\u7684\u8bbe\u5907\u63a5\u5165\u534f\u8bae\uff0c\u5e2e\u60a8\u5bf9\u8fd9\u4e9b\u65b9\u5f0f\u6709\u4e00\u4e2a\u603b\u4f53\u7684\u4e86\u89e3\uff0c\u5e76\u5927\u6982\u77e5\u9053\u5982\u4f55\u9009\u62e9\u5b83\u4eec\u3002\u6bcf\u4e00\u79cd\u63a5\u5165\u65b9\u5f0f\u7684\u5177\u4f53\u539f\u7406\u548c\u64cd\u4f5c\u65b9\u5f0f\uff0c\u6211\u4eec\u5c06\u5728\u540e\u7eed\u7684\u76f8\u5173\u7ae0\u8282\u4e2d\u8be6\u7ec6\u8bf4\u660e\u3002\n\n## MQTT\n\nMQTT \u534f\u8bae\u57fa\u4e8e TCP\/IP \u534f\u8bae\uff0c\u662f\u4e00\u79cd\u57fa\u4e8e\u6d88\u606f\u961f\u5217\u673a\u5236\u7684\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u901a\u5e38\u7528\u4e8e\u7269\u8054\u7f51\u6d88\u606f\u901a\u4fe1\u573a\u666f\u3002\n\n\u5728 MQTT \u63a5\u5165\u65b9\u5f0f\u4e2d\uff0c\u8bbe\u5907\u9700\u8981\u548c\u4e91\u5e73\u53f0\u5efa\u7acb TCP \u957f\u8fde\u63a5\uff0c\u5e76\u901a\u8fc7 MQTT \u534f\u8bae\u7279\u6709\u7684\u65b9\u5f0f\u5b8c\u6210\u8eab\u4efd\u8ba4\u8bc1\u3002\u5f53\u8bbe\u5907\u6210\u529f\u8fde\u63a5\u5230\u4e91\u5e73\u53f0\u540e\uff0c\u901a\u8fc7 \u53d1\u5e03 \u548c \u8ba2\u9605 \u76f8\u5e94\u7684 \u4e3b\u9898\uff08Topic\uff09\uff0c\u6765\u5b8c\u6210\u548c\u4e91\u5e73\u53f0\u7684\u6d88\u606f\u901a\u4fe1\u3002\n\n\u5982\u679c\u91c7\u7528 MQTT \u65b9\u5f0f\u8fdb\u884c\u6570\u636e\u4e0a\u62a5\uff0c\u8bbe\u5907\u9996\u5148\u8981\u548c\u4e91\u5e73\u53f0\u5efa\u7acbMQTT\u8fde\u63a5\uff0c\u6211\u4eec\u540c\u6837\u5728\u8bbe\u5907\u8be6\u60c5\u9875\u7684\u3010\u8fde\u63a5\u3011\u9875\u9762\u53ef\u4ee5\u627e\u5230 MQTT \u63a5\u5165\u70b9\u5730\u5740\uff0c\u6bd4\u5982\uff1a\n\n**\u63d0\u793a**\n\n\u8bf7\u5148\u8fdb\u5165 **[\u63a7\u5236\u53f0](https:\/\/iot.modbus.cn\/) **\uff0c\u521b\u5efa\u8bbe\u5907\uff0c\u83b7\u53d6\u8bbe\u5907 MQTT \u63a5\u5165\u70b9\u5730\u5740\u3002\n\n\u5728\u786c\u4ef6\u5f00\u53d1\u4e2d\uff0c\u6839\u636e\u4e0d\u540c\u786c\u4ef6\u5e73\u53f0\uff0c\u6709\u76f8\u5e94\u7684 MQTT \u5b9e\u73b0\u65b9\u5f0f\u3002\u8fd9\u91cc\u6211\u4eec\u4ee5\u7b2c\u4e09\u65b9 MQTT \u5ba2\u6237\u7aef\u5de5\u5177 MQTT.fxopen \u4e3a\u4f8b\uff0c\u6765\u6a21\u62df\u8bbe\u5907\u548c\u4e91\u5e73\u53f0\u5efa\u7acb MQTT \u8fde\u63a5\u3002\n\n\u5efa\u7acb MQTT \u8fde\u63a5\u65f6\uff0c\u9664\u4e86\u63a5\u5165\u70b9\u5730\u5740\u5916\uff0c\u8fd8\u9700\u8981\u8eab\u4efd\u9a8c\u8bc1\uff0c\u8bbe\u7f6e\u5982\u4e0b\uff1a\n\n\u53c2\u6570\u503c\u5ba2\u6237\u7aefID\u8bbe\u5907\u53f7SN\u7528\u6237\u540d\u7528\u6237\u8d26\u53f7\u5bc6\u7801\u7528\u6237\u5bc6\u7801\n\n## \u5ba2\u6237\u7aef -> \u670d\u52a1\u5668\n\n\u5ba2\u6237\u7aef\u53d1\u5e03\u5230\u4e0b\u65b9\u4e3b\u9898\u6570\u636e\n\u53d1\u5e03\u4e3b\u9898\uff1a**\/dev\/coo\/\u8bbe\u5907\u53f7SN**\n\u6570\u636e\u683c\u5f0f\uff1a\n\n```\n{\n    "sensor_device_id": 1,\n    "port_id": 1,\n    "sdata": 33\n}\n```\n\n**\u5907\u6ce8\uff1asensor_device_id** \u5730\u5740\u53f7\uff0c**port_id** \u5bc4\u5b58\u5668\u53f7\uff0c**Sdata** \u6570\u636e\u6570\u503c\n\n## \u670d\u52a1\u5668 -> \u5ba2\u6237\u7aef\n\n\u5ba2\u6237\u7aef\u5173\u6ce8\u4e0b\u65b9\u4e3b\u9898\uff0c\u670d\u52a1\u5668\u63a8\u9001\u6570\u636e\n\u8ba2\u9605\u4e3b\u9898\uff1a**\/server\/coo\/\u8bbe\u5907\u53f7SN**\n\u6570\u636e\u683c\u5f0f\uff1a\n\n```\n{\n    "sensor_device_id": 1,\n    "port_id": 2,\n    "sdata": 100.0\n}\n```\n\n**\u5907\u6ce8\uff1asensor_device_id** \u5730\u5740\u53f7\uff0c**port_id** \u5bc4\u5b58\u5668\u53f7\uff0c**Sdata** \u4f20\u611f\u5668\u6570\u503c\n\u5982\u679c\u662f\u7ee7\u7535\u5668\u5f00\u5173\u7684\u8bdd\uff0c\u5219 **0** \u5173\u95ed\uff0c**1** \u6253\u5f00\uff1b\n\n## TCP\n\n\u9664\u6b64\u4e4b\u5916\uff0cModbus\u7269\u8054\u7f51\u5e73\u53f0 \u8fd8\u652f\u6301\u65e0\u6240\u4e0d\u80fd\u7684 TCP \u63a5\u5165\u534f\u8bae\uff0c\u5728\u63a7\u5236\u53f0\u53ef\u4ee5\u8bbe\u7f6e\u57fa\u4e8e TCP \u7684Modbus RTU\u548cModbus TCP\u534f\u8bae\u3002\n\n\u524d\u8fb9\u63d0\u5230\u7684 DTU\uff0c\u901a\u5e38\u90fd\u652f\u6301 TCP \u900f\u4f20\u65b9\u5f0f\u63a5\u5165\u4e91\u5e73\u53f0\u3002\n\n### **Modbus RTU \u534f\u8bae\uff08\u6807\u51c6\uff09**\n\n- \u7cfb\u7edf\u517c\u5bb9\u6807\u51c6\u7684 modbus RTU \u534f\u8bae\u3002\n\n- DTU \u914d\u7f6e\u65f6\uff0c\u9700\u8981\u914d\u7f6e\u6210\u900f\u4f20\u6a21\u5f0f\uff0c\u5e76\u4e14\u8bbe\u7f6e\u81ea\u5b9a\u4e49\u6ce8\u518c\u5305\uff0c\u6ce8\u518c\u5305\u4e3a\u8bbe\u5907\u53f7 SN \uff1b\n\n- DTU \u914d\u7f6e\u65f6\uff0c\u9700\u8981\u914d\u7f6e\u6210\u900f\u4f20\u6a21\u5f0f\uff0c\u5e76\u4e14\u8bbe\u7f6e\u81ea\u5b9a\u4e49\u5fc3\u8df3\u5305\uff0c\u5fc3\u8df3\u5305\u4e3a\u8bbe\u5907\u53f7 SN\uff1b\n\n- \u8fde\u63a5\u5730\u5740\uff1a **iot.modbus.cn**\n\n- \u7aef\u53e3\uff1a**50001**\n\n### Modbus TCP \u534f\u8bae\uff08\u6807\u51c6\uff09\n\n- \u7cfb\u7edf\u517c\u5bb9\u6807\u51c6\u7684 modbus TCP \u534f\u8bae\u3002\n\n- DTU \u914d\u7f6e\u65f6\uff0c\u9700\u8981\u914d\u7f6e\u6210\u900f\u4f20\u6a21\u5f0f\uff0c\u5e76\u4e14\u8bbe\u7f6e\u81ea\u5b9a\u4e49\u6ce8\u518c\u5305\uff0c\u6ce8\u518c\u5305\u4e3a\u8bbe\u5907\u53f7 SN \uff1b\n\n- DTU \u914d\u7f6e\u65f6\uff0c\u9700\u8981\u914d\u7f6e\u6210\u900f\u4f20\u6a21\u5f0f\uff0c\u5e76\u4e14\u8bbe\u7f6e\u81ea\u5b9a\u4e49\u5fc3\u8df3\u5305\uff0c\u5fc3\u8df3\u5305\u4e3a\u8bbe\u5907\u53f7 SN\uff1b\n\n- DTU \u9700\u8bbe\u7f6e modbus \u6a21\u5f0f\n\n- \u8fde\u63a5\u5730\u5740\uff1a iot.modbus.cn\n\n- \u7aef\u53e3\uff1a50001\n\n---\n*modbus.cn*\n"