"# \u5408\u5b99 4G \u7cfb\u5217\u6a21\u7ec4 AT \u547d\u4ee4 MQTT \u63a5\u5165\n\n> 2024-04-07 | 2024-04-07\n> https:\/\/www.modbus.cn\/en\/docs\/27382\n\n---\n\n\u5408\u5b99 4G CAT.1 \u7cfb\u5217\u6a21\u7ec4\u7684 AT \u547d\u4ee4\u652f\u6301 MQTT\uff0c\u8bf7\u53c2\u8003\u4ee5\u4e0b\u6b65\u9aa4\uff0c\u53ea\u9700\u51e0\u5206\u949f\u5c31\u53ef\u4ee5\u63a5\u5165\u4e91\u5e73\u53f0\u5e76\u4e0a\u62a5\u6570\u636e\uff0c\u8fd8\u53ef\u4ee5\u4ece\u4e91\u5e73\u53f0\u4e0b\u53d1\u547d\u4ee4\u5b9e\u73b0\u8fdc\u7a0b\u5b9e\u65f6\u63a7\u5236\u3002\n\n**\u63d0\u793a**\n\n\u5982\u679c\u60a8\u8fd8\u4e0d\u4e86\u89e3\u4e91\u5e73\u53f0\u7684 MQTT \u63a5\u5165\u534f\u8bae\uff0c\u53ef\u4ee5\u70b9\u51fb \u8bbe\u5907 MQTT \u63a5\u5165 \u8be6\u7ec6\u4e86\u89e3\u3002\n\n## \u56fa\u4ef6\u7248\u672c\u548c\u6a21\u7ec4\u578b\u53f7\n\n\u672c\u6559\u7a0b\u4e2d\u7684 AT \u6307\u4ee4\u4f7f\u7528\u4ee5\u4e0b\u5b98\u65b9 AT \u56fa\u4ef6\u5b8c\u6210\u6d4b\u8bd5\uff1a\n\n- AirM2M_720U_V301836_LTE_AT.pac\n\n- AirM2M_720U_V401581_LTE_AT.pac\n\n\u652f\u6301\u4ee5\u4e0b\u6a21\u7ec4\u578b\u53f7\uff1a\n\n- Air724UG\n\n- Air720UG\/UH\n\n- Air722UG\n\n- Air820UG\n\n\u5408\u5b99\u5b98\u65b9 AT \u4e0b\u8f7d\u5730\u5740\u53ca\u624b\u518c\uff1a[https:\/\/doc.openluat.com\/wiki\/27?wiki_page_id=3053open in new window](https:\/\/doc.openluat.com\/wiki\/27?wiki_page_id=3053)\n\n## AT \u6307\u4ee4\n\n### \u68c0\u67e5\u7f51\u7edc\n\n\u67e5\u8be2\u5361\u72b6\u6001\n\n```\nAT+CPIN?\n\n+CPIN: READY\n\nOK\n```\n\n\u67e5\u8be2\u7f51\u7edc\u6ce8\u518c\u60c5\u51b5\n\n```\nAT+CGATT?\n\n+CGATT: 1\n\nOK\n```\n\n\u914d\u7f6e\u7f51\u7edc\n\n```\nAT+CSTT\n\nOK\n```\n\n\u6fc0\u6d3b\u7f51\u7edc\n\n```\nAT+CIICR\n\nOK\n```\n\n\u67e5\u8be2\u7f51\u7edc\u4fe1\u53f7\n\n```\nAT+CSQ\n\n+CSQ: 29,99\n\nOK\n```\n\n\u4ee5\u4e0a AT \u547d\u4ee4\u5747\u8fd4\u56de OK \uff0c\u8868\u793a\u7f51\u7edc\u6b63\u5e38\u3002\n\n### \u8bbe\u7f6e MQTT \u76f8\u5173\u53c2\u6570\n\n**\u63d0\u793a**\n\n\u8fdb\u5165 \u63a7\u5236\u53f0 \u521b\u5efa\u8bbe\u5907\uff0c\u83b7\u53d6\u8bbe\u5907\u8bc1\u4e66\uff0c\u7528\u4e8e MQTT \u8fde\u63a5\u53c2\u6570\u3002\n\n\u63a5\u4e0b\u6765\u662f\u8bbe\u7f6e MQTT \u8fde\u63a5\u53c2\u6570\uff0c\u8fd9\u91cc\u53ea\u9700\u8981\u8bbe\u7f6e MQTT \u7684 clientId\u3001username\u3001password\uff0c\u53ef\u4ee5\u5728\u8bbe\u5907\u8be6\u60c5\u9875\u7684\u3010\u8fde\u63a5\u3011\u9009\u9879\u4e2d\u590d\u5236\u8fd9\u4e9b\u6807\u8bc6\uff0c\u6309\u4ee5\u4e0b\u683c\u5f0f\u53d1\u9001 AT \u547d\u4ee4\u3002\n\n```\nAT+MCONFIG=4QR8TZ9ThuL4G,ceshi,123456\n\nOK\n```\n\n**4QR8TZ9ThuL4G**\u4fee\u6539\u4e3a\u81ea\u5df1\u7684\u8bbe\u5907\u53f7SN\uff0c**ceshi**\u4fee\u6539\u4e3a\u7528\u6237\u8d26\u53f7\uff0c**123456**\u4fee\u6539\u4e3a\u7528\u6237\u5bc6\u7801\n\n### \u5efa\u7acb TCP \u8fde\u63a5\n\n\u53d1\u9001\u4ee5\u4e0b AT \u547d\u4ee4\uff1a\n\n```\nAT+MIPSTART="iot.modbus.cn","1883"\n\nOK\n\nCONNECT OK\n```\n\n\u9700\u8981\u7279\u522b\u6ce8\u610f\u7684\u662f\uff0c\u6b64\u65f6\u6a21\u7ec4\u548c\u4e91\u5e73\u53f0\u6210\u529f\u5efa\u7acb\u4e86 TCP \u8fde\u63a5\uff0c\u4f46\u8fd8\u6ca1\u6709\u5b8c\u6210 MQTT \u8eab\u4efd\u9a8c\u8bc1\uff0c\u6b64\u65f6\u670d\u52a1\u5668\u4f1a\u7b49\u5f85 5 \u79d2\uff0c\u5982\u679c 5 \u79d2\u5185\u6ca1\u6709\u53d1\u9001\u4e0b\u8fb9\u7684 AT \u6307\u4ee4\uff0c\u4e91\u5e73\u53f0\u5c06\u4f1a\u81ea\u52a8\u65ad\u5f00 TCP \u8fde\u63a5\u3002\u6a21\u7ec4\u4f1a\u6536\u5230\u4ee5\u4e0b\u6d88\u606f\uff1a\n\n```\nCLOSED\n```\n\n\u5982\u679c\u6536\u5230\u4e91\u5e73\u53f0\u5173\u95ed\u8fde\u63a5\u7684\u6d88\u606f\uff0c\u8bf7\u518d\u6b21\u53d1\u9001\u4e0a\u8fb9\u7684 AT \u547d\u4ee4\u3002\n\n### \u5b8c\u6210 MQTT \u8eab\u4efd\u9a8c\u8bc1\n\n\u53d1\u9001\u4ee5\u4e0b AT \u547d\u4ee4\uff0c\u5b8c\u6210 MQTT \u8eab\u4efd\u9a8c\u8bc1\uff0c\u6210\u529f\u5b8c\u6210 MQTT \u8fde\u63a5\u3002\n\n```\nAT+MCONNECT=0,300\n\nOK\n```\n\n\u5982\u679c\u4e91\u5e73\u53f0\u5df2\u7ecf\u4e3b\u52a8\u5173\u95ed\u4e86\u8fde\u63a5\uff0c\u6b64\u65f6\u8be5 AT \u6307\u4ee4\u4f1a\u4ea7\u751f\u4ee5\u4e0b\u9519\u8bef\u7801\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u91cd\u65b0\u56de\u5230\u4e0a\u4e00\u4e2a AT \u547d\u4ee4\u3002\n\n```\nAT+MCONNECT=0,300\n\n+CME ERROR: 767\n```\n\n### \u4e0a\u62a5\u5c5e\u6027\n\n\u81f3\u6b64\uff0c\u6a21\u7ec4\u548c\u4e91\u5e73\u53f0\u5df2\u5efa\u7acb MQTT \u8fde\u63a5\uff0c\u6211\u4eec\u53ef\u4ee5\u5411\u4e91\u5e73\u53f0\u53d1\u5e03\u6d88\u606f\u6216\u8ba2\u9605\u6d88\u606f\u3002\n\n**\u63d0\u793a**\n\n\u70b9\u6b64\u4e86\u89e3 MQTT \u4e3b\u9898\u4e00\u89c8\n\n\u6211\u4eec\u5148\u6765\u53d1\u9001\u4e00\u4e2a\u7b80\u5355\u7684\u5c5e\u6027\u4e0a\u62a5\uff0c\u6d88\u606f\u5185\u5bb9\u4e3a\u7b26\u5408\u5c5e\u6027\u4e0a\u62a5\u534f\u8bae\u7684 JSON \u7ed3\u6784\uff0c\u5982\u4e0b\uff1a\n\n\u5728\u5408\u5b99\u7cfb\u5217\u6a21\u7ec4\u7684 AT \u547d\u4ee4\u4e2d\uff0c \"\u53cc\u5f15\u53f7\u8981\u66ff\u6362\u6210\u8f6c\u4e49\u7b2622\uff0c\u6240\u4ee5\u5904\u7406\u540e\u5982\u4e0b\uff1a\n\n```\n{22sensor_device_id22:1,22port_id22:1,22sdata22:33}\n```\n\n\u63a5\u4e0b\u6765\uff0c\u4f7f\u7528\u4ee5\u4e0b AT \u547d\u4ee4\uff0c\u53d1\u9001\u8fd9\u4e2a\u5c5e\u6027\u7ed3\u6784\u5230\u4e91\u5e73\u53f0\u3002\n\n```\nAT+MPUB=attributes,0,0,{22sensor_device_id22:1,22port_id22:1,22sdata22:33}\n\nOK\n```\n\n\u6b64\u65f6\uff0c\u5728\u4e91\u5e73\u53f0\u7684\u8bbe\u5907\u8be6\u60c5\u9875\uff0c\u53ef\u4ee5\u770b\u5230\u51fa\u73b0\u4e86\u540d\u4e3a temperature \u7684\u5c5e\u6027\u548c\u503c\u3002\u5982\u4e0b\u56fe\uff1a\n\n\u901a\u8fc7\u5728\u5c5e\u6027 JSON \u7ed3\u6784\u4e2d\u653e\u7f6e\u66f4\u591a\u5c5e\u6027\uff0c\u60a8\u53ef\u4ee5\u5c06\u8bbe\u5907\u4e0a\u66f4\u591a\u6570\u636e\u4e0a\u4f20\u5230\u4e91\u5e73\u53f0\u3002\n\n\u5982\u679c JSON \u4e2d\u6709\u591a\u4e2a\u5c5e\u6027\uff0c\u5728\u5408\u5b99\u7cfb\u5217\u6a21\u7ec4\u7684 AT \u547d\u4ee4\u4e2d\uff0c, \u4e5f\u9700\u8981\u8f6c\u4e49\u4e3a 2C\uff0c\u4f8b\u5982\uff1a\n\n```\n[{22sensor_device_id22:1,22port_id22:1,22sdata22:33},{22sensor_device_id22:1,22port_id22:2,22sdata22:60}]\n```\n\n\u53d1\u9001\u7ed9\u6a21\u7ec4\u7684\u5b57\u7b26\u4e32\u5904\u7406\u540e\u5982\u4e0b\uff1a\n\n```\nAT+MPUB=attributes,0,0,[{22sensor_device_id22:1,22port_id22:1,22sdata22:33},{22sensor_device_id22:1,22port_id22:2,22sdata22:60}]\n\nok\n```\n\n\u5982\u679c\u4ee5\u4e0a AT \u547d\u4ee4\u662f\u901a\u8fc7\u5355\u7247\u673a\u7a0b\u5e8f\u53d1\u9001\u7ed9\u6a21\u7ec4\uff0c\u5728\u7a0b\u5e8f\u4e2d\u8bb0\u5f97\u8fd8\u8981\u505a\u4e00\u6b21\u8f6c\u4e49\uff0c\u7528 \\ \u6765\u8868\u793a \uff0c\u4f8b\u5982\uff1a\n\n```\n"{\\22sensor_device_id\\22: 1\\2C\\22port_id\\22: 1\\2C\\22sdata\\22: 33}"\n```\n\n### \u81ea\u5b9a\u4e49\u6570\u636e\u4e0a\u62a5\n\n\u901a\u8fc7\u81ea\u5b9a\u4e49\u6570\u636e\u4e0a\u62a5\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u81ea\u5b9a\u4e49\u7684\u53d1\u5e03\u4e3b\u9898\u548c\u8ba2\u9605\u4e3b\u9898\u3002\n\n\u8fd9\u91cc\u5047\u8bbe\u6211\u4eec\u5df2\u521b\u5efa\u4e86\u540d\u4e3a message \u7684\u81ea\u5b9a\u4e49\u6570\u636e\u6d41\uff0c\u4e91\u5e73\u53f0\u81ea\u52a8\u751f\u6210\u4e86\u65b0\u7684\u4e3b\u9898 data\/message\uff0c\u8fd9\u91cc\u53d1\u9001\u4e00\u4e2a ASCII \u5b57\u7b26\u4e32\u5230\u8be5\u4e3b\u9898\uff0cAT \u547d\u4ee4\u5982\u4e0b\uff1a\n\n```\nAT+MPUB=data\/message,0,0,hello_thingscloud\n\nOK\n```\n\n\u53d1\u9001\u6d88\u606f\u524d\uff0c\u5728\u8bbe\u5907\u8be6\u60c5\u9875\u7684\u3010\u6d88\u606f\u3011\u9009\u9879\u4e2d\uff0c\u6253\u5f00\u3010\u8c03\u8bd5\u72b6\u6001\u3011\uff0c\u4fbf\u53ef\u4ee5\u770b\u5230\u6d88\u606f\u65e5\u5fd7\u3002\n\n\u81ea\u5b9a\u4e49\u6d88\u606f\u4e0d\u4f1a\u81ea\u52a8\u751f\u6210\u8bbe\u5907\u5c5e\u6027\uff0c\u60a8\u53ef\u4ee5\u5229\u7528\u3010\u89c4\u5219\u5f15\u64ce\u3011\u5bf9\u81ea\u5b9a\u4e49\u6570\u636e\u8fdb\u884c\u5206\u6790\u5904\u7406\uff0c\u4ece\u800c\u751f\u6210\u9700\u8981\u7684\u8bbe\u5907\u5c5e\u6027\u3002\n\n### \u8ba2\u9605\u5c5e\u6027\u4e0b\u53d1\n\n\u5982\u679c\u5e0c\u671b\u8bbe\u5907\u80fd\u591f\u5b9e\u65f6\u63a5\u6536\u4e91\u5e73\u53f0\u4e0b\u53d1\u7684\u5c5e\u6027\u6570\u636e\uff0c\u6a21\u7ec4\u53d1\u9001\u4ee5\u4e0b AT \u547d\u4ee4\uff1a\n\n```\nAT+MSUB=attributes\/push,0\n\nOK\n\nSUBACK\n```\n\n### \u8ba2\u9605\u547d\u4ee4\u4e0b\u53d1\n\n\u5982\u679c\u5e0c\u671b\u8bbe\u5907\u80fd\u591f\u5b9e\u65f6\u63a5\u6536\u4e91\u5e73\u53f0\u4e0b\u53d1\u7684\u547d\u4ee4\u6d88\u606f\uff0c\u6a21\u7ec4\u53d1\u9001\u4ee5\u4e0b AT \u547d\u4ee4\uff1a\n\n```\nAT+MSUB=command\/send\/+,0\n\nOK\n\nSUBACK\n```\n\n### \u8ba2\u9605\u81ea\u5b9a\u4e49\u6d88\u606f\n\n\u540c\u6837\u4ee5\u4e0a\u8fb9\u7684\u81ea\u5b9a\u4e49\u6570\u636e\u6d41 message \u4e3a\u4f8b\uff0c\u4e91\u5e73\u53f0\u4f1a\u540c\u65f6\u751f\u6210\u4e00\u4e2a\u7528\u4e8e\u4e0b\u53d1\u6570\u636e\u7684\u4e3b\u9898\uff0c\u6a21\u7ec4\u53ef\u4ee5\u8ba2\u9605\u8be5\u4e3b\u9898\u3002\n\n```\nAT+MSUB=data\/message\/set,0\n\nOK\n```\n\n### \u63a5\u6536\u8ba2\u9605\u6570\u636e\u4e0b\u53d1\n\n\u901a\u8fc7\u4e0a\u8fb9\u7684\u4e3b\u9898\u8ba2\u9605\uff0c\u4e00\u65e6\u4e91\u5e73\u53f0\u6709\u76f8\u5e94\u7684\u6d88\u606f\u4e0b\u53d1\uff0c\u6a21\u7ec4\u4fbf\u4f1a\u5c06\u6d88\u606f\u900f\u4f20\u5230\u4f7f\u7528 AT \u7684\u4e32\u53e3\u3002\n\n```\nAT+MQTTMSGGET\n```\n\n\u5f53\u4e91\u5e73\u53f0\u4e0b\u53d1\u4e86\u547d\u4ee4\u6d88\u606f\u540e\uff0c\u6a21\u7ec4\u7acb\u5373\u6536\u5230\u4ee5\u4e0b\u6d88\u606f\uff1a\n\n```\n+MSUB: "command\/send\/1000",53 byte,{"method":"restart","params":{"timeout":10},"id":1000}\n```\n\n\u6536\u5230\u7684\u547d\u4ee4\u6d88\u606f\u7ed3\u6784\u5982\u4e0b\uff1a\n\n```\n{\n    "method": "restart",\n    "params": {\n        "timeout": 10\n    },\n    "id": 1000\n}\n```\n\n### \u67e5\u8be2 MQTT \u8fde\u63a5\u72b6\u6001\n\n\u901a\u8fc7\u4ee5\u4e0b AT \u547d\u4ee4\uff0c\u53ef\u4ee5\u67e5\u8be2 MQTT \u5f53\u524d\u8fde\u63a5\u72b6\u6001\u3002\n\n```\nAT+MQTTSTATU\n\n+MQTTSTATU :1\n```\n\n\u4ee5\u4e0a\u8868\u793a\u5904\u4e8e\u8fde\u63a5\u4e2d\u3002\n\n```\nAT+MQTTSTATU\n+MQTTSTATU :0\n```\n\n\u4ee5\u4e0a\u8868\u793a\u8fde\u63a5\u5df2\u5173\u95ed\u6216\u672a\u8fde\u63a5\u3002\n\n---\n*modbus.cn*\n"