"# Modbus\u5982\u4f55\u8fdc\u8ddd\u79bb\u4f20\u8f93\uff1f\n\n> 2022-03-02 | 2026-07-01\n> https:\/\/www.modbus.cn\/en\/6428.html\n\n**Modbus \u534f\u8bae\u6807\u51c6, Modbus\u6280\u672f\u6587\u6863**\n\n---\n\n\u6765\u6e90\uff1aModbus\u4e2d\u6587\u7f51\uff08modbus.cn\uff09 \u2014\u2014 \u56fd\u5185\u9886\u5148\u7684Modbus\u901a\u4fe1\u534f\u8bae\u6280\u672f\u793e\u533a\n\n\u672c\u6587\uff1aModbus \u8fdc\u8ddd\u79bb\u4f20\u8f93\u5b8c\u6574\u6307\u5357\uff1a\u4ece\u53cc\u7ede\u7ebf\u5230\u5149\u7ea4\u7684\u6bcf\u4e00\u79cd\u65b9\u6848 \u00b7 \u4f5c\u8005\uff1amodbus\u6280\u672f\u56e2\u961f \u00b7 \u53d1\u5e03\u4e8e 2026-07-01\n\n\u6458\u8981\uff1aModbus \u534f\u8bae\u7684\u7269\u7406\u5c42\u4f20\u8f93\u8ddd\u79bb\u53d7\u9650\u4e8e RS-485 \u7684\u7535\u6c14\u7279\u6027\u2014\u2014\u6807\u51c6\u6781\u9650 1200 \u7c73\u4e14\u901f\u7387\u4e0e\u8ddd\u79bb\u6210\u53cd\u6bd4\u3002\u672c\u6587\u7cfb\u7edf\u68b3\u7406\u5c06 Modbus \u4fe1\u53f7\u5ef6\u957f\u81f3\u6570\u516c\u91cc\u4e43\u81f3\u8de8\u57ce\u4f20\u8f93\u7684\u5168\u90e8\u6280\u672f\u65b9\u6848\uff0c\u5305\u62ec RS-485 \u4e2d\u7ee7\u6269\u5c55\u3001\u5149\u7ea4\u4f20\u8f93\uff08\u5149\u7aef\u673a\uff09\u3001\u8702\u7a9d\u7f51\u7edc\uff084G\/5G DTU\uff09\u3001\u6570\u4f20\u7535\u53f0\u3001LoRa\/ZigBee\/NB-IoT \u65e0\u7ebf\u6280\u672f\u7b49\uff0c\u6bcf\u79cd\u65b9\u6848\u7ed9\u51fa\u9002\u7528\u8ddd\u79bb\u3001\u901f\u7387\u3001\u6210\u672c\u3001\u529f\u8017\u7684\u5de5\u7a0b\u53c2\u6570\u548c\u90e8\u7f72\u8981\u70b9\u3002\u5173\u952e\u8bcd\uff1aModbus \u8fdc\u8ddd\u79bb\u4f20\u8f93\u3001RS-485 \u4e2d\u7ee7\u5668\u3001\u5149\u7aef\u673a\u30014G DTU\u3001\u6570\u4f20\u7535\u53f0\u3001LoRa Modbus\u3001NB-IoT \u4e32\u53e3\u3001\u5149\u7ea4 Modbus\u3002\n\n\u4f60\u5728\u73b0\u573a\u62c9\u4e86\u4e00\u6839 800 \u7c73\u7684 RS-485 \u5c4f\u853d\u53cc\u7ede\u7ebf\uff0c\u5de1\u5b8c\u7ebf\u56de\u6765\u4e00\u6d4b\u2014\u2014\u901a\u4fe1\u5076\u5c14\u65ad\u3001\u7ecf\u5e38\u8d85\u65f6\u3002\u6ce2\u7279\u7387\u8bbe\u7684\u662f 115200\uff0c\u8bbe\u5907\u662f 32 \u53f0\u3002\u8fd9\u5c31\u662f\u5178\u578b\u7684\u5fd8\u8bb0\u67e5 RS-485 \u7684\u8ddd\u79bb-\u901f\u7387\u66f2\u7ebf\u4e86\u3002\n\nModbus \u662f\u5e94\u7528\u5c42\u534f\u8bae\u2014\u2014\u5b83\u5bf9\u7269\u7406\u5c42\u7684\u4f20\u8f93\u8ddd\u79bb\u6ca1\u6709\u786c\u6027\u7ea6\u675f\u3002\u4f60\u7528\u4ec0\u4e48\u4ecb\u8d28\u627f\u8f7d Modbus \u5e27\uff0c\u51b3\u5b9a\u4e86\u4f60\u80fd\u4f20\u591a\u8fdc\u3002\u6240\u4ee5\u300cModbus \u5982\u4f55\u8fdc\u8ddd\u79bb\u4f20\u8f93\u300d\u7684\u672c\u8d28\u95ee\u9898\u5176\u5b9e\u662f\u300c\u4ec0\u4e48\u7269\u7406\u5c42\u80fd\u627f\u8f7d Modbus \u534f\u8bae\u5e76\u5ef6\u957f\u81f3\u76ee\u6807\u8ddd\u79bb\u300d\u3002\u4e0b\u9762\u6309\u8ddd\u79bb\u548c\u4f20\u8f93\u4ecb\u8d28\u5206\u7c7b\uff0c\u9010\u4e00\u62c6\u89e3\u3002\n\n## \u4e00\u3001\u5148\u770b\u6e05\u695a\u8d77\u70b9\uff1aRS-485 \u7684\u7269\u7406\u6781\u9650\n\n### 1.1 \u8ddd\u79bb\u4e0e\u901f\u7387\u7684\u57fa\u672c\u5173\u7cfb\n\nRS-485 \u4f7f\u7528\u5dee\u5206\u4fe1\u53f7\u4f20\u8f93\uff0c\u4f9d\u9760 A\/B \u7ebf\u4e4b\u95f4\u7684\u7535\u538b\u5dee\uff08+2V \u5230 +6V \u8868\u793a\u903b\u8f91 1\uff0c-2V \u5230 -6V \u8868\u793a\u903b\u8f91 0\uff09\u6765\u6297\u5171\u6a21\u5e72\u6270\u3002\u4f46\u5dee\u5206\u4fe1\u53f7\u7684\u4f18\u52bf\u968f\u8ddd\u79bb\u8870\u51cf\u2014\u2014\u7535\u7f06\u7684\u5206\u5e03\u7535\u5bb9\u548c\u76f4\u6d41\u7535\u963b\u9020\u6210\u7684\u4fe1\u53f7\u7578\u53d8\u5728\u9ad8\u9891\u65f6\u66f4\u660e\u663e\uff0c\u6240\u4ee5\u901a\u4fe1\u901f\u7387\u8d8a\u9ad8\uff0c\u53ef\u9760\u8ddd\u79bb\u8d8a\u77ed\u3002\n\n\u6807\u51c6\u89c4\u8303\u7ed9\u51fa\u7684\u53c2\u6570\uff1a\n\n\u6ce2\u7279\u7387\u6700\u5927\u53ef\u9760\u8ddd\u79bb\u5907\u6ce8100 kbps\u22481200 \u7c73\u6807\u51c6\u6781\u9650115200 bps\u2248800 \u7c73\u5b9e\u6d4b\u901a\u5e38\u518d\u6253\u516b\u62989600 bps\u22481200 \u7c73\u5de5\u4e1a\u73b0\u573a\u5e38\u7528\uff0c\u8ddd\u79bb\u8868\u73b0\u6700\u4f184800 bps\u22481800 \u7c73\u6781\u957f\u8ddd\u79bb\u9996\u9009\uff0c\u727a\u7272\u541e\u5410\u91cf\u6362\u53d6\u7a3310 Mbps\u224812 \u7c73\u4ec5\u673a\u67dc\u5185\u77ed\u8ddd\u53ef\u7528\n\n\u8fd9\u6761\u53cd\u6bd4\u66f2\u7ebf\u662f RS-485 \u9009\u578b\u7684\u57fa\u672c\u5e38\u8bc6\u2014\u2014\u4e0d\u662f\u300cRS-485 \u4f20 1200 \u7c73\u300d\u5c31\u5b8c\u4e8b\u4e86\uff0c\u800c\u662f\u5728 100kbps \u4ee5\u4e0b\u624d\u80fd\u4f20 1200 \u7c73\u3002115200 \u6ce2\u7279\u7387\u5e38\u89c1\u7684\u5de5\u4e1a\u5e94\u7528\u5b9e\u9645\u4e0a\u53ef\u9760\u8ddd\u79bb\u53ea\u6709 800 \u7c73\u5de6\u53f3\uff0c\u8fd9\u8fd8\u662f\u7528\u6807\u51c6 120\u03a9 \u7279\u6027\u963b\u6297\u53cc\u7ede\u7ebf\u3001\u7ec8\u7aef\u7535\u963b\u63a5\u597d\u7684\u7406\u60f3\u60c5\u51b5\u3002\n\n### 1.2 \u8282\u70b9\u6570\u91cf\u9650\u5236\n\nRS-485 \u6807\u51c6\u89c4\u5b9a\u4e00\u4e2a\u7f51\u6bb5\u6700\u591a 32 \u4e2a\u5355\u4f4d\u8d1f\u8f7d\u3002\u73b0\u5728\u591a\u6570 485 \u82af\u7247\u8bbe\u8ba1\u4e86 1\/4 \u5355\u4f4d\u8d1f\u8f7d\uff08\u8f93\u5165\u963b\u6297 48k\u03a9\uff09\u751a\u81f3 1\/8 \u5355\u4f4d\u8d1f\u8f7d\uff08\u8f93\u5165\u963b\u6297 96k\u03a9\uff09\uff0c\u5bf9\u5e94\u7684\u8282\u70b9\u4e0a\u9650\u53ef\u4ee5\u5230 128 \u6216 256 \u4e2a\u3002\u4f46\u5b9e\u9645\u4e2d\u771f\u6b63\u9650\u5236\u8282\u70b9\u6570\u7684\u662f Modbus \u534f\u8bae\u672c\u8eab\u2014\u2014\u4e00\u4e2a RS-485 \u7f51\u6bb5\u4e0a\u7684 Modbus \u4ece\u7ad9\u5730\u5740\u53ea\u6709 1 \u5b57\u8282\uff081~247\uff09\uff0c\u6ee1\u989d 247 \u4e2a\u4ece\u7ad9\u7684\u5b9e\u9645\u573a\u666f\u6781\u5176\u7f55\u89c1\uff0c\u56e0\u4e3a\u8f6e\u8be2\u5468\u671f\u7684\u65f6\u95f4\u538b\u529b\u4f1a\u5148\u538b\u57ae\u7cfb\u7edf\u3002\n\n### 1.3 \u7ec8\u7aef\u7535\u963b\u4e0e\u4fe1\u53f7\u53cd\u5c04\n\n\u957f\u8ddd\u79bb\u4f20\u8f93\u65f6\uff0c\u7ec8\u7aef\u4e0d\u63a5 120\u03a9 \u7ec8\u7aef\u7535\u963b\u5bfc\u81f4\u4fe1\u53f7\u53cd\u5c04\u662f\u901a\u4fe1\u4e0d\u7a33\u5b9a\u7684\u7b2c\u4e00\u5927\u5751\u3002\u539f\u7406\u5f88\u7b80\u5355\uff1a\u4fe1\u53f7\u5230\u8fbe\u7535\u7f06\u672b\u7aef\u65f6\u5982\u679c\u963b\u6297\u4e0d\u8fde\u7eed\uff0c\u80fd\u91cf\u53cd\u5c04\u56de\u6765\u53e0\u52a0\u5728\u539f\u4fe1\u53f7\u4e0a\uff0c\u4ea7\u751f\u300c\u632f\u94c3\u300d\u6548\u5e94\uff0c\u4e25\u91cd\u65f6\u63a5\u6536\u7aef\u5b8c\u5168\u770b\u4e0d\u61c2\u3002\u4e24\u7aef\u5404\u63a5\u4e00\u4e2a 120\u03a9 \u7535\u963b\uff0c\u4f7f\u603b\u7ebf\u963b\u6297\u5339\u914d\uff0c\u53cd\u5c04\u6d88\u5931\u3002\u5982\u679c\u504f\u7f6e\u7535\u963b\uff08\u4e0a\u4e0b\u62c9\uff09\u6ca1\u6709\u6b63\u786e\u914d\u7f6e\uff0c\u7a7a\u95f2\u7535\u5e73\u65f6 A-B \u7535\u538b\u5dee\u4f4e\u4e8e \u00b1200mV \u8fd8\u4f1a\u5bfc\u81f4\u7a7a\u95f2\u65f6\u6536\u5230\u968f\u673a\u566a\u58f0\u3002\n\n\u8fd9\u4e9b\u662f\u5730\u57fa\u3002\u4e0b\u9762\u8bb2\u600e\u4e48\u7834\u5730\u57fa\u7684\u7269\u7406\u9650\u5236\u3002\n\n## \u4e8c\u3001\u65b9\u6848\u4e00\uff1aRS-485 \u4e2d\u7ee7\u5668 \u2014\u2014 \u518d\u5ef6\u957f 1200 \u7c73\n\n### 2.1 \u5de5\u4f5c\u539f\u7406\n\nRS-485 \u4e2d\u7ee7\u5668\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u53cc\u5411\u4fe1\u53f7\u653e\u5927\u5668 + \u518d\u751f\u5668\u3002\u5b83\u5206\u300c\u4e0a\u6e38\u300d\u548c\u300c\u4e0b\u6e38\u300d\u4e24\u4e2a\u72ec\u7acb\u7684 RS-485 \u7f51\u6bb5\uff0c\u4e2d\u7ee7\u5668\u5728\u4e2d\u95f4\u63a5\u6536\u4e00\u4fa7\u7684\u5dee\u5206\u4fe1\u53f7\u3001\u5c06\u5176\u8f6c\u5316\u4e3a\u6570\u5b57\u903b\u8f91\u7535\u5e73\u3001\u518d\u9a71\u52a8\u5230\u53e6\u4e00\u4fa7\u53d1\u51fa\u4e00\u6a21\u4e00\u6837\u7684\u4fe1\u53f7\u3002\u7531\u4e8e\u4fe1\u53f7\u88ab\u5b8c\u6574\u518d\u751f\u800c\u4e0d\u662f\u7b80\u5355\u653e\u5927\uff0c\u65b0\u7684\u7f51\u6bb5\u76f8\u5f53\u4e8e\u4ece\u5934\u5f00\u59cb\u8ba1\u7b97\u8ddd\u79bb\u2014\u2014\u7b2c\u4e00\u6bb5 1200 \u7c73\uff0c\u7b2c\u4e8c\u6bb5\u518d\u8fc7 1200 \u7c73\u3002\n\n\u4e00\u6761 RS-485 \u603b\u7ebf\u4e0a\u6700\u591a\u4e32\u8054 9 \u53f0\u4e2d\u7ee7\u5668\uff0c\u7f51\u7edc\u603b\u957f\u5ea6\u7406\u8bba\u4e0a\u53ef\u8fbe 9600 \u7c73\u3002\u6bcf\u4e2a\u4e2d\u7ee7\u5668\u540c\u65f6\u4e5f\u662f\u4e00\u4e2a\u7f51\u6bb5\u9694\u79bb\u5668\u2014\u2014\u4e0a\u6e38\u7684\u7ec8\u7aef\u7535\u963b\u3001\u504f\u7f6e\u7535\u963b\u3001\u8282\u70b9\u6570\u91cf\u4e0e\u4e0b\u6e38\u5b8c\u5168\u72ec\u7acb\u3002\n\n### 2.2 \u6838\u5fc3\u53c2\u6570\n\n\u53c2\u6570\u5178\u578b\u503c\u8bf4\u660e\u6bcf\u53f0\u5ef6\u4f38\u8ddd\u79bb1200-1500 \u7c73\u4e0e\u6ce2\u7279\u7387\u76f8\u5173\uff0c\u4f4e\u901f\u66f4\u8fdc\u6700\u5927\u7ea7\u8054\u65709 \u53f0\u8d85\u8fc7\u540e\u5ef6\u65f6\u7d2f\u52a0\u4e0d\u53ef\u63a5\u53d7\u8f6c\u53d1\u5ef6\u8fdf\u22641 \u4f4d\u65f6\u95f4\u96f6\u5ef6\u65f6\u81ea\u52a8\u8f6c\u53d1\uff0c\u65e0\u9700\u65b9\u5411\u63a7\u5236\u5149\u7535\u9694\u79bb2500Vrms\u4fdd\u62a4\u70e7\u53e3\u548c\u6297\u51fb\u5171\u6a21\u5e72\u6270\u53ef\u63a5\u8282\u70b9\u6570\u6bcf\u6bb5 128 \u4ee5\u4e0a\u91cd\u65b0\u8ba1\u7b97\u8d1f\u8f7d\uff0c\u4e0d\u53d7\u4e0a\u6e38\u6bb5\u5f71\u54cd\n\n### 2.3 \u9002\u7528\u4e0e\u4e0d\u9002\u7528\n\n\u9002\u7528\uff1a\u540c\u4e00\u4e2a\u5382\u533a\u91cc\u3001\u4e24\u4e09\u680b\u697c\u4e4b\u95f4\u3001\u9ad8\u4f4e\u538b\u914d\u7535\u5ba4\u4e4b\u95f4\uff0c\u8ddd\u79bb\u9700\u6c42\u5728 1~3 \u516c\u91cc\uff0c\u4e0d\u60f3\u6295\u8d44\u5149\u7ea4\u4e5f\u4e0d\u60f3\u6539\u534f\u8bae\u3002\u65bd\u5de5\u4e0a\u8fd8\u662f\u8d70 RS-485 \u53cc\u7ede\u7ebf\uff0c\u4e2d\u7ee7\u5668\u8981\u5c31\u8fd1\u4f9b\u7535\uff08\u901a\u5e38\u662f DC 24V\uff09\u3002\n\n\u4e0d\u9002\u7528\uff1a\u591a\u96f7\u51fb\u533a\u57df\uff08\u54ea\u6015\u52a0\u4e86\u9632\u96f7\u4fdd\u62a4\uff0c\u957f\u8ddd\u79bb\u94dc\u7ebf\u8fd8\u662f\u5f15\u96f7\u5230\u8bbe\u5907\u7aef\u53e3\u7684\u98ce\u9669\uff09\uff1b\u8d85\u8fc7 3 \u516c\u91cc\u7684\u573a\u666f\uff08\u4e2d\u7ee7\u5668\u7684\u5ef6\u65f6\u7d2f\u52a0\u548c\u65bd\u5de5\u96be\u5ea6\u5df2\u7ecf\u4e0d\u5982\u5149\u7ea4\u4e86\uff09\uff1b\u7535\u78c1\u5e72\u6270\u6781\u5f3a\u7684\u73af\u5883\uff08\u5982\u5927\u578b\u7535\u673a\u9891\u7e41\u542f\u505c\u7684\u8f66\u95f4\u2014\u2014\u94dc\u7ebf\u662f\u5927\u5929\u7ebf\uff0c\u4e2d\u7ee7\u5668\u80fd\u653e\u5927\u4fe1\u53f7\u4f46\u4e5f\u653e\u5927\u4e86\u566a\u58f0\uff09\u3002\n\n## \u4e09\u3001\u65b9\u6848\u4e8c\uff1a\u5149\u7aef\u673a \u2014\u2014 \u5149\u7ea4\u4f20\u8f93\uff0c\u5f7b\u5e95\u544a\u522b\u7535\u78c1\u5e72\u6270\n\n### 3.1 \u5de5\u4f5c\u539f\u7406\n\nRS-485 \u5149\u7aef\u673a\uff08\u4e32\u53e3\u5149\u7ea4\u8c03\u5236\u89e3\u8c03\u5668\uff09\u662f\u4e00\u5bf9\u6210\u5bf9\u4f7f\u7528\u7684\u8bbe\u5907\uff1a\u53d1\u5c04\u7aef\u5c06 RS-485 \u5dee\u5206\u7535\u4fe1\u53f7\u8f6c\u6362\u4e3a\u5149\u4fe1\u53f7\u901a\u8fc7\u5149\u7ea4\u53d1\u9001\uff1b\u63a5\u6536\u7aef\u5c06\u5149\u4fe1\u53f7\u8fd8\u539f\u4e3a RS-485 \u5dee\u5206\u7535\u4fe1\u53f7\u3002\u6574\u4e2a\u8f6c\u6362\u8fc7\u7a0b\u5b8c\u5168\u900f\u660e\u2014\u2014\u4e32\u53e3\u4fa7\u7684\u8bbe\u5907\u4e0d\u77e5\u9053\u4e2d\u95f4\u7ecf\u8fc7\u4e86\u5149\u7ea4\uff0cModbus \u5e27\u6beb\u53d1\u65e0\u635f\u3002\n\n\u5178\u578b\u7528\u6cd5\u662f\u5728 RS-485 \u603b\u7ebf\u7684\u4e2d\u95f4\u63d2\u5165\u5149\u7aef\u673a\u5bf9\uff1a\n\n```\n`RS-485 \u8bbe\u5907(\u7f51\u6bb5A) \u2192 \u5149\u7aef\u673a(A\u7aef) \u2192 \u5149\u7ea4 \u2192 \u5149\u7aef\u673a(B\u7aef) \u2192 RS-485 \u8bbe\u5907(\u7f51\u6bb5B)`\n```\n\n\u6ce8\u610f\u5149\u7aef\u673a\u901a\u5e38\u6210\u5bf9\u4f7f\u7528\u2014\u2014\u4e24\u7aef\u5fc5\u987b\u6709\u76f8\u540c\u578b\u53f7\uff08\u6216\u4e92\u76f8\u517c\u5bb9\uff09\u7684\u5149\u7aef\u673a\u3002\u4e24\u4e2a\u5149\u7aef\u673a\u4e4b\u95f4\u901a\u8fc7\u5149\u7ea4\u76f4\u8fde\uff0c\u4e2d\u95f4\u4e0d\u9700\u8981\u4efb\u4f55\u4ea4\u6362\u673a\u6216\u8def\u7531\u5668\u3002\n\n### 3.2 \u591a\u6a21\u4e0e\u5355\u6a21\n\n\u5149\u7ea4\u9009\u578b\u76f4\u63a5\u5f71\u54cd\u8ddd\u79bb\u548c\u6210\u672c\uff1a\n\n\u5149\u7ea4\u7c7b\u578b\u7ea4\u82af\u76f4\u5f84\u5149\u6e90\u6700\u5927\u8ddd\u79bb\u6210\u672c\u9002\u7528\u573a\u666f\u591a\u6a2162.5\/50 \u03bcmLED\/850nm2~5 \u516c\u91cc\u4f4e\u56ed\u533a\u5185\u3001\u540c\u4e00\u5efa\u7b51\u7fa4\u5355\u6a219 \u03bcm\u6fc0\u5149\/1310nm20~50 \u516c\u91cc\u4e2d\u8de8\u5382\u533a\u3001\u57ce\u5e02\u8303\u56f4\u5355\u6a21\u957f\u8ddd9 \u03bcm\u6fc0\u5149\/1550nm80~120 \u516c\u91cc\u9ad8\u8de8\u57ce\u3001\u957f\u8f93\u7ba1\u7ebf\n\n\u5149\u7aef\u673a\u652f\u6301\u7684\u4e32\u53e3\u901f\u7387\u901a\u5e38\u8986\u76d6 300 bps \u5230 115200 bps\uff08\u90e8\u5206\u578b\u53f7\u5230 1 Mbps\uff09\uff0c\u5bf9\u4e8e Modbus RTU \u7684\u5e38\u89c1\u6ce2\u7279\u7387 9600-115200 \u5b8c\u5168\u591f\u7528\u3002\n\n### 3.3 \u5de5\u7a0b\u4f18\u52bf\n\n\u5149\u7ea4\u4f20\u8f93\u7684\u4e09\u4e2a\u538b\u5012\u6027\u4f18\u52bf\uff0c\u94dc\u7ebf\u6c38\u8fdc\u6bd4\u4e0d\u4e86\uff1a\n\n- **\u5f7b\u5e95\u9694\u79bb\u7535\u78c1\u5e72\u6270**\u3002\u5149\u4fe1\u53f7\u4e0d\u53d7\u78c1\u573a\u5f71\u54cd\uff0c\u4e0d\u548c 10kV \u9ad8\u538b\u7535\u7f06\u8d70\u540c\u4e00\u6865\u67b6\u4e5f\u6ca1\u95ee\u9898\u3002\u9752\u6d77\u90a3\u4e2a\u5149\u4f0f\u7535\u7ad9\uff0c\u9006\u53d8\u5668\u65c1\u8fb9\u5c31\u662f\u5f3a\u78c1\u573a\uff0cRS-485 \u53cc\u7ede\u7ebf\u4e0a\u53bb 200 \u7c73\u5c31\u4e0d\u884c\u4e86\uff0c\u6362\u4e86\u5149\u7aef\u673a\u540e\u51e0\u4e2a\u6708\u96f6\u4e22\u5305\u3002\n\n- **\u7535\u6c14\u9694\u79bb**\u3002RS-485 \u94dc\u7ebf\u7684\u4e24\u4e2a\u7aef\u70b9\u662f\u76f4\u63a5\u7535\u8fde\u901a\u7684\u2014\u2014\u4e00\u7aef\u88ab\u96f7\u51fb\uff0c\u6d6a\u6d8c\u80fd\u91cf\u6cbf\u94dc\u7ebf\u77ac\u95f4\u4f20\u5230\u53e6\u4e00\u7aef\u70e7\u6bc1\u6240\u6709\u8bbe\u5907\u3002\u5149\u7ea4\u4e0d\u5bfc\u7535\uff0c\u96f7\u51fb\u80fd\u91cf\u505c\u5728\u5149\u7aef\u673a\u5916\u58f3\u4e0a\uff08\u524d\u63d0\u5916\u58f3\u63a5\u5730\u597d\u4e86\uff09\u3002\n\n- **\u8ddd\u79bb\u78be\u538b**\u3002\u5355\u6a21\u5149\u7ea4\u8f7b\u677e 20 \u516c\u91cc\u4ee5\u4e0a\uff0c\u4e2d\u7ee7\u5668\u4e32 9 \u4e2a\u624d\u80fd\u5230 9 \u516c\u91cc\u3002\u800c\u4e14\u5149\u7ea4\u7684\u5e26\u5bbd\u4f59\u91cf\u5de8\u5927\u2014\u2014\u672a\u6765\u5347\u7ea7\u4f20\u8f93\u901f\u7387\u4e0d\u9700\u8981\u6362\u7f06\u7ebf\u3002\n\n### 3.4 \u6210\u672c\u8003\u91cf\n\n\u5149\u7aef\u673a\u5bf9\u7684\u6210\u672c\u5728 200-1000 \u5143\u4e0d\u7b49\uff08\u53d6\u51b3\u4e8e\u5de5\u4e1a\u7ea7\u8fd8\u662f\u5546\u4e1a\u7ea7\u3001\u5149\u7535\u9694\u79bb\u7b49\u7ea7\u3001\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\uff09\u3002\u52a0\u4e0a\u5149\u7ea4\u672c\u8eab\uff08\u5ba4\u5916\u94e0\u88c5\u5355\u6a21\u7ea6 0.5-1.5 \u5143\/\u7c73\u3001\u542b\u65bd\u5de5\u8d39\u7ea6 3-8 \u5143\/\u7c73\uff09\uff0c\u603b\u4f53\u4e24\u516c\u91cc\u4ee5\u5185\u5927\u6982 2000-5000 \u5143\u3002\u76f8\u6bd4\u540c\u6837\u8ddd\u79bb\u8d70\u94dc\u7ebf + \u591a\u53f0\u4e2d\u7ee7\u5668\uff08\u65bd\u5de5 + \u9632\u96f7 + \u7ebf\u7f06\uff09\uff0c\u5149\u7aef\u673a\u7684\u6027\u4ef7\u6bd4\u5728\u5927\u7ea6 1.5 \u516c\u91cc\u4ee5\u4e0a\u5f00\u59cb\u53cd\u8d85\u3002\n\n## \u56db\u3001\u65b9\u6848\u4e09\uff1a\u8702\u7a9d\u7f51\u7edc DTU \u2014\u2014 \u53ea\u8981\u6709\u8fd0\u8425\u5546\u4fe1\u53f7\u5c31\u80fd\u4f20\n\n### 4.1 \u5de5\u4f5c\u539f\u7406\n\n4G DTU\uff08Data Transfer Unit\uff0c\u6570\u636e\u4f20\u8f93\u5355\u5143\uff09\u662f\u4e00\u79cd\u5c06 RS-232\/RS-485 \u4e32\u53e3\u6570\u636e\u901a\u8fc7\u8702\u7a9d\u7f51\u7edc\uff084G\/5G\/Cat.1\/GPRS\uff09\u4f20\u9001\u5230\u8fdc\u7aef\u670d\u52a1\u5668\u7684\u65e0\u7ebf\u7ec8\u7aef\u8bbe\u5907\u3002\u5bf9\u4e32\u53e3\u8bbe\u5907\u6765\u8bf4\uff0cDTU \u66b4\u9732\u7684\u662f\u4e00\u4e2a RS-485\uff08\u6216 RS-232\uff09\u63a5\u53e3\uff0c\u8bbe\u5907\u50cf\u5f80\u5e38\u4e00\u6837\u53d1 Modbus RTU \u5e27\u5373\u53ef\uff1bDTU \u5728\u5185\u90e8\u5c06\u6b64\u5e27\u5c01\u88c5\u5230 TCP\/UDP\/MQTT \u5305\u4e2d\uff0c\u901a\u8fc7\u8fd0\u8425\u5546\u7684\u57fa\u7ad9\u548c\u4e2d\u7ee7\u7f51\u7edc\u4f20\u8f93\u5230\u516c\u7f51\u6216\u4e13\u7f51\u670d\u52a1\u5668\u3002\n\n\u6574\u4e2a\u6570\u636e\u6d41\u8def\u5f84\uff1a\n\n```\nModbus \u4ece\u7ad9(RS-485) \u2192 DTU(\u4e32\u53e3\u21924G IP\u5305) \u2192 \u8fd0\u8425\u5546\u57fa\u7ad9 \u2192 \u6838\u5fc3\u7f51 \u2192 Internet\n    \u2192 \u4e91\u670d\u52a1\u5668(NAT\/\u516c\u7f51IP) \u2192 \u4e0a\u4f4d\u673a\u8f6f\u4ef6 \/ \u4e91\u5e73\u53f0\n```\n\nDTU \u7684\u6838\u5fc3\u4ef7\u503c\u4e00\u53e5\u8bdd\uff1a**\u7528\u4e00\u5f20 SIM \u5361\u4ee3\u66ff\u4e00\u628a\u94f2\u5b50**\u3002\u4e0d\u9700\u8981\u6316\u6c9f\u5e03\u7ebf\uff0c\u4e0d\u9700\u8981\u67b6\u5149\u7ea4\uff0c\u4e0d\u9700\u8981\u7533\u8bf7\u65bd\u5de5\u8bb8\u53ef\u2014\u2014\u8bbe\u5907\u63a5\u4e0a DTU\u3001\u63d2\u4e0a SIM \u5361\u3001\u914d\u7f6e\u670d\u52a1\u5668 IP \u548c\u7aef\u53e3\uff0c\u6570\u636e\u5c31\u4ece\u73b0\u573a\u5230\u4e86\u4e91\u7aef\u3002\n\n### 4.2 \u6838\u5fc3\u80fd\u529b\u4e0e\u53c2\u6570\n\n\u53c2\u6570\u5178\u578b\u89c4\u683c\u7f51\u7edc\u5236\u5f0f4G Cat.1\uff08\u4e3b\u529b\uff09\/ Cat.4 \/ 5G \/ GPRS(2G\uff0c\u9010\u6b65\u9000\u7f51)\u4e32\u53e3RS-232 \u6216 RS-485\uff0c\u652f\u6301 1200~921600 bps\u901a\u4fe1\u534f\u8baeTCP Client \/ UDP \/ MQTT \/ HTTP\u5de5\u4f5c\u6e29\u5ea6\u5de5\u4e1a\u7ea7\uff1a-40\u00b0C ~ 85\u00b0C\u4f9b\u7535DC 5-36V \u5bbd\u538b\uff0c\u5178\u578b\u529f\u8017 <1WModbus \u7279\u6027Modbus RTU \u2194 TCP \u900f\u4f20\uff0c\u90e8\u5206\u578b\u53f7\u652f\u6301\u4e3b\u52a8\u91c7\u96c6 + \u7f13\u5b58\n\n4G Cat.1 \u662f\u76ee\u524d DTU \u5e02\u573a\u7684\u4e3b\u6d41\u9009\u62e9\uff1a\u6bd4 Cat.4 \u529f\u8017\u4f4e\u3001\u6210\u672c\u4f4e\uff08\u6a21\u7ec4\u4ef7\u683c\u7ea6 20-30 \u5143\uff09\u3001\u901f\u7387\u591f\u7528\uff08\u4e0a\u884c 5Mbps\/\u4e0b\u884c 10Mbps\uff09\uff0c\u800c Modbus \u6570\u636e\u4e00\u5e27\u6700\u591a 256 \u5b57\u8282\uff0cCat.1 \u7684\u901f\u7387\u7ef0\u7ef0\u6709\u4f59\u3002\n\n### 4.3 \u90e8\u7f72\u7684\u5173\u952e\u7ea6\u675f\n\n**\u5fc5\u987b\u6709\u516c\u7f51\u53ef\u8bbf\u95ee\u7684\u670d\u52a1\u5668**\u3002DTU \u901a\u5e38\u4f5c\u4e3a TCP Client \u4e3b\u52a8\u8fde\u63a5\u670d\u52a1\u5668\u7684\u56fa\u5b9a\u516c\u7f51 IP \u548c\u7aef\u53e3\u3002\u5982\u679c\u73b0\u573a\u8bbe\u5907\u4e5f\u6709\u516c\u7f51 IP\uff08\u6781\u5c11\u89c1\uff09\uff0c\u53ef\u4ee5\u7528 TCP Server \u6a21\u5f0f\u8ba9\u670d\u52a1\u5668\u6765\u8fde\u63a5 DTU\uff0c\u4f46\u8fd9\u4e2a\u573a\u666f\u5728\u5de5\u4e1a\u73b0\u573a\u51e0\u4e4e\u4e0d\u5b58\u5728\u3002\u5b9e\u9645\u90e8\u7f72\u4e2d\uff0c\u670d\u52a1\u5668\u7aef\u901a\u5e38\u90e8\u7f72\u5728\u963f\u91cc\u4e91\/\u534e\u4e3a\u4e91\u4e0a\uff0c\u901a\u8fc7 NAT \u6216\u8d1f\u8f7d\u5747\u8861\u66b4\u9732\u7aef\u53e3\u3002\n\n**\u5fc3\u8df3\u5305\u548c\u6ce8\u518c\u5305\u662f\u6807\u914d**\u30024G \u7f51\u7edc\u4f1a\u6709 NAT \u8d85\u65f6\u2014\u2014\u8fd0\u8425\u5546\u7684\u57fa\u7ad9 NAT \u901a\u5e38\u5728 60-180 \u79d2\u65e0\u6570\u636e\u540e\u65ad\u5f00\u6620\u5c04\u3002DTU \u7684\u5fc3\u8df3\u5305\u5c31\u662f\u5b9a\u65f6\u53d1\u4e00\u6761\u65e0\u5173\u6570\u636e\u7ed9\u670d\u52a1\u5668\uff0c\u4fdd\u6301 NAT \u6620\u5c04\u4e0d\u8fc7\u671f\u3002\u6ce8\u518c\u5305\u662f DTU \u9996\u6b21\u8fde\u63a5\u670d\u52a1\u5668\u65f6\u53d1\u9001\u7684\u6807\u8bc6\u4fe1\u606f\uff08\u5982 IMEI\u3001\u81ea\u5b9a\u4e49\u8bbe\u5907\u7f16\u53f7\uff09\uff0c\u8ba9\u670d\u52a1\u5668\u77e5\u9053\u5bf9\u7aef\u662f\u8c01\u3002\n\n**SIM \u5361\u9009\u62e9\u51b3\u5b9a\u7a33\u5b9a\u6027**\u3002\u4e09\u5927\u8fd0\u8425\u5546\u7684\u4fe1\u53f7\u8986\u76d6\u5728\u4e0d\u540c\u73b0\u573a\u5dee\u5f02\u5de8\u5927\u2014\u2014\u5de5\u4e1a\u533a\u5382\u623f\u6df1\u5904\u53ef\u80fd\u67d0\u5bb6\u5b8c\u5168\u6ca1\u6709\u4fe1\u53f7\u3002\u7269\u8054\u7f51\u4e13\u7528\u5361\uff08\u5b9a\u5411\u6d41\u91cf + APN \u914d\u7f6e\uff09\u6bd4\u666e\u901a\u624b\u673a\u5361\u66f4\u7a33\u5b9a\uff0c\u4f46\u9700\u8981\u63d0\u524d\u786e\u8ba4\u8fd0\u8425\u5546\u5728\u8be5\u4f4d\u7f6e\u7684\u4fe1\u53f7\u5f3a\u5ea6\u548c\u4e13\u7528 APN \u53c2\u6570\u3002\n\n**\u901a\u4fe1\u5ef6\u8fdf\u662f\u5ba2\u89c2\u5b58\u5728\u7684**\u30024G \u7f51\u7edc\u7684\u7aef\u5230\u7aef\u5ef6\u8fdf\u901a\u5e38\u5728 30-200ms\uff0c\u52a0\u4e0a\u8fd0\u8425\u5546\u6838\u5fc3\u7f51\u7684\u8def\u7531\u6296\u52a8\uff0c\u4e0d\u80fd\u6307\u671b DTU \u505a\u5230\u5c40\u57df\u7f51\u7ea7\u522b\u7684\u5b9e\u65f6\u6027\u3002\u5bf9\u4e8e Modbus RTU \u7684\u4e3b\u7ad9\u6765\u8bf4\uff0c\u8fd9\u610f\u5473\u7740\u300c\u8d85\u65f6\u65f6\u95f4\u300d\u5fc5\u987b\u62c9\u957f\u2014\u2014\u670d\u52a1\u5668\u4fa7 Modbus TCP \u8bf7\u6c42\u7684\u8d85\u65f6\u81f3\u5c11\u8bbe 500ms \u4ee5\u4e0a\uff0c\u4e0d\u80fd\u7167\u642c\u672c\u5730\u7684 100ms\u3002\n\n### 4.4 \u9002\u7528\u573a\u666f\n\n4G DTU \u9002\u5408\u4ee5\u4e0b\u60c5\u51b5\uff1a\n\n- \u6570\u636e\u91c7\u96c6\u70b9\u5206\u6563\uff08\u5982\u6c34\u6e90\u5730\u76d1\u6d4b\u4e95\u3001\u6c14\u8c61\u7ad9\uff09\uff0c\u65e0\u6cd5\u96c6\u4e2d\u5e03\u7ebf- \u79fb\u52a8\u8bbe\u5907\u8054\u7f51\uff08\u5982\u5de5\u7a0b\u8f66\u8f86\u3001\u79fb\u52a8\u6cf5\u8f66\uff09- \u8de8\u57ce\u5e02\u751a\u81f3\u8de8\u7701\u7684\u6570\u636e\u4f20\u8f93- \u5feb\u901f\u90e8\u7f72\uff0c\u4e0d\u9700\u8981\u7b49\u65bd\u5de5\u548c\u5ba1\u6279\n\n\u4e0d\u9002\u5408\u7684\u60c5\u51b5\uff1a\n\n- \u65e0\u8fd0\u8425\u5546\u4fe1\u53f7\u8986\u76d6\uff08\u5730\u4e0b\u5ba4\u3001\u96a7\u9053\u3001\u6df1\u5c71\uff09- \u6570\u636e\u91cf\u5927\u4e14\u5b9e\u65f6\u6027\u8981\u6c42\u6781\u9ad8\uff084G \u5ef6\u8fdf\u4e0d\u53ef\u63a7\uff09- \u957f\u671f\u8fd0\u8425\u6210\u672c\u654f\u611f\uff08\u6309\u6d41\u91cf\u8ba1\u8d39\uff0c\u867d\u7136\u7269\u8054\u7f51\u5361\u8d44\u8d39\u4f4e\u4f46\u4ecd\u662f\u6301\u7eed\u652f\u51fa\uff09\n\n## \u4e94\u3001\u65b9\u6848\u56db\uff1a\u6570\u4f20\u7535\u53f0 \u2014\u2014 \u4e0d\u7528 SIM \u5361\u7684\u65e0\u7ebf\u65b9\u6848\n\n### 5.1 \u539f\u7406\n\nRS-485 \u6570\u4f20\u7535\u53f0\u7684\u5de5\u4f5c\u65b9\u5f0f\u548c DTU \u5f88\u50cf\u2014\u2014\u5c06 Modbus \u5e27\u8f6c\u6362\u4e3a\u65e0\u7ebf\u4fe1\u53f7\u53d1\u9001\u2014\u2014\u4f46\u4e0d\u8d70\u8fd0\u8425\u5546\u7f51\u7edc\uff0c\u800c\u662f\u7528\u514d\u8bb8\u53ef\u7684 ISM \u9891\u6bb5\uff08433MHz\u3001868MHz\u3001915MHz \u6216 2.4GHz\uff09\u8fdb\u884c\u70b9\u5bf9\u70b9\u6216\u70b9\u5bf9\u591a\u70b9\u7684\u79c1\u6709\u65e0\u7ebf\u4f20\u8f93\u3002\u53d1\u9001\u7aef\u5c06\u4e32\u53e3\u6570\u636e\u8c03\u5236\u5230\u5c04\u9891\u8f7d\u6ce2\u4e0a\u5c04\u9891\u53d1\u5c04\uff0c\u63a5\u6536\u7aef\u89e3\u8c03\u540e\u8fd8\u539f\u4e3a\u4e32\u53e3\u6570\u636e\u3002\n\n\u548c DTU \u7684\u672c\u8d28\u533a\u522b\uff1a\u6570\u4f20\u7535\u53f0\u662f\u79c1\u6709\u7684\u7eaf\u7269\u7406\u5c42\u65e0\u7ebf\u94fe\u8def\uff0c\u4e0d\u7ecf\u8fc7\u4efb\u4f55\u516c\u5171\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd\u3002\u4f60\u7684\u53d1\u5c04\u673a\u548c\u63a5\u6536\u673a\u4e4b\u95f4\u6ca1\u6709\u57fa\u7ad9\u3001\u6ca1\u6709\u4ea4\u6362\u673a\u3001\u6ca1\u6709\u8def\u7531\u5668\u2014\u2014\u5c31\u662f\u5929\u7ebf\u5bf9\u5929\u7ebf\u3002\n\n### 5.2 \u9891\u6bb5\u4e0e\u6027\u80fd\u5bf9\u6bd4\n\n\u9891\u6bb5\u5178\u578b\u8ddd\u79bb\u7a7f\u900f\u80fd\u529b\u6570\u636e\u901f\u7387\u4f7f\u7528\u533a\u57df433 MHz3-8 \u516c\u91cc\uff08\u5f00\u9614\u5730\uff09\u597d\uff08\u7ed5\u5c04\u80fd\u529b\u5f3a\uff09\u2264 115.2 kbps\u5168\u7403\uff08\u4e9a\u6d32\u5e38\u89c1\uff09868\/915 MHz2-5 \u516c\u91cc\u4e2d\u2264 250 kbps\u6b27\u6d32\/\u5317\u7f8e2.4 GHz500 \u7c73\u5dee\uff08\u89c6\u8ddd\u51e0\u4e4e\u5fc5\uff09\u2264 2 Mbps\u5168\u7403\n\n433MHz \u662f\u5de5\u4e1a\u6570\u4f20\u7535\u53f0\u7684\u4e3b\u6d41\u9009\u62e9\uff1a\u6ce2\u957f\u957f\u3001\u7ed5\u5c04\u597d\u3001\u4e0d\u6311\u5929\u7ebf\u65b9\u5411\uff0c\u5728\u6709\u5efa\u7b51\u7269\u906e\u6321\u7684\u5de5\u5382\u73af\u5883\u91cc\u8868\u73b0\u6700\u4f18\u30022.4GHz \u867d\u7136\u901f\u7387\u9ad8\uff0c\u4f46\u7a7f\u5899\u80fd\u529b\u5f31\uff0c\u901a\u5e38\u53ea\u7528\u5728\u89c6\u8ddd\u65e0\u906e\u6321\u7684\u573a\u666f\u3002\n\n### 5.3 \u4f18\u7f3a\u70b9\n\n\u4f18\u70b9\uff1a\u4e00\u6b21\u6027\u6295\u5165\u540e\u96f6\u8fd0\u8425\u8d39\uff08\u4e0d\u9700\u8981 SIM \u5361\u548c\u6d41\u91cf\u8d39\uff09\uff1b\u79c1\u6709\u7f51\u7edc\u4e0d\u4f9d\u8d56\u7b2c\u4e09\u65b9\u57fa\u7840\u8bbe\u65bd\uff1b\u5ef6\u8fdf\u53ef\u63a7\u4e14\u7a33\u5b9a\uff08\u6beb\u79d2\u7ea7\uff0c\u4e0d\u662f 4G \u7684\u767e\u6beb\u79d2\u7ea7\uff09\u3002\n\n\u7f3a\u70b9\uff1a\u53d7\u65e0\u7ebf\u7535\u6cd5\u89c4\u9650\u5236\u2014\u2014\u53d1\u5c04\u529f\u7387\u4e0d\u80fd\u8d85\u8fc7\u89c4\u5b9a\u503c\uff08\u4e2d\u56fd 433MHz \u901a\u5e38 \u2264100mW\uff09\uff0c\u5b9e\u9645\u8ddd\u79bb\u8fdc\u4e0d\u5982\u7406\u8bba\u503c\uff1b\u53d7\u5929\u6c14\u548c\u969c\u788d\u7269\u5f71\u54cd\u5927\uff08\u5927\u96e8\u3001\u91d1\u5c5e\u5efa\u7b51\u7269\u90fd\u4f1a\u8870\u51cf\u4fe1\u53f7\uff09\uff1b\u591a\u53f0\u7535\u53f0\u5728\u76f8\u90bb\u9891\u6bb5\u4f1a\u4e92\u76f8\u5e72\u6270\uff0c\u9700\u8981\u505a\u9891\u7387\u89c4\u5212\u548c\u4fe1\u9053\u5206\u914d\u3002\n\n\u6570\u4f20\u7535\u53f0\u6700\u7ecf\u5178\u7684\u5e94\u7528\u662f\u5728\u5927\u578b\u5382\u533a\u5185\u66ff\u4ee3\u957f\u8ddd\u79bb\u5e03\u7ebf\u2014\u2014\u6bd4\u5982\u6c34\u5382\u7684\u53d6\u6c34\u6cf5\u7ad9\u8ddd\u79bb\u5382\u533a\u4e2d\u63a7\u5ba4 2 \u516c\u91cc\uff0c\u4e2d\u95f4\u9694\u4e86\u4e00\u6761\u8def\uff0c\u6316\u6c9f\u5e03\u7ebf\u6210\u672c\u6781\u9ad8\u3002\u67b6\u4e00\u5bf9 433MHz \u6570\u4f20\u7535\u53f0 + \u6307\u5411\u6027\u5929\u7ebf\uff0cModbus \u6570\u636e\u6d41\u5c31\u80fd\u6765\u56de\u8dd1\uff0c\u6210\u672c\u53ea\u6709\u5e03\u7ebf\u7684\u5341\u5206\u4e4b\u4e00\u3002\n\n## \u516d\u3001\u65b9\u6848\u4e94\uff1aWiFi \u4e32\u53e3\u670d\u52a1\u5668 \u2014\u2014 \u5c40\u57df\u7f51\u5185\u544a\u522b\u7ebf\u7f06\n\nWiFi \u4e32\u53e3\u670d\u52a1\u5668\u662f\u5c06 RS-232\/RS-485 \u8f6c\u4e3a WiFi\uff08IEEE 802.11 b\/g\/n\uff09\u7684\u8bbe\u5907\uff0c\u5b9e\u73b0\u4e32\u53e3 \u2192 \u4ee5\u592a\u7f51\/WiFi \u53cc\u5411\u900f\u4f20\u3002\u5b83\u672c\u8d28\u4e0a\u548c\u6709\u7ebf\u4e32\u53e3\u670d\u52a1\u5668\u7684\u529f\u80fd\u5b8c\u5168\u4e00\u6837\uff0c\u53ea\u662f\u4f20\u8f93\u4ecb\u8d28\u4ece\u53cc\u7ede\u7ebf\u53d8\u6210\u4e86 2.4GHz\/5GHz \u7684\u65e0\u7ebf\u7535\u6ce2\u3002\n\n\u8986\u76d6\u8303\u56f4\uff1a\u5ba4\u5185\u7ea6 30-100 \u7c73\uff08\u7a7f\u5899\u540e\u5927\u5e45\u8870\u51cf\uff09\uff0c\u5ba4\u5916\u5f00\u9614\u5730\u7ea6 150-200 \u7c73\uff08\u52a0\u9ad8\u589e\u76ca\u5929\u7ebf\u53ef\u5230 500 \u7c73\uff09\u3002\n\nWiFi \u65b9\u6848\u9002\u5408\u5de5\u5382\u8f66\u95f4\u5185\u6216\u540c\u4e00\u5e73\u9762\u5c42\u7684\u77ed\u8ddd\u79bb\u65e0\u7ebf\u4f20\u8f93\u2014\u2014\u6bd4\u5982\u751f\u4ea7\u7ebf\u672b\u7aef\u6709\u53f0 Modbus \u4eea\u8868\uff0c\u65c1\u8fb9\u6ca1\u6709\u7f51\u53e3\u3001\u62c9\u7f51\u7ebf\u8981\u8de8\u8fc7\u4eba\u884c\u901a\u9053\uff0c\u67b6\u4e00\u4e2a WiFi \u4e32\u53e3\u670d\u52a1\u5668\uff0c\u8ba9\u6570\u636e\u901a\u8fc7\u5de5\u5382\u5df2\u6709\u7684 WiFi \u7f51\u7edc\u56de\u4f20\u5230\u670d\u52a1\u5668\u3002\u901f\u7387\u9ad8\uff08\u8fbe 54-150 Mbps\uff09\uff0c\u4f46\u529f\u8017\u6bd4 DTU \u9ad8\uff08\u6301\u7eed 0.5-1W\uff09\uff0c\u4e14\u8ddd\u79bb\u6709\u9650\u3002\n\n## \u4e03\u3001\u65b9\u6848\u516d\uff1aLoRa \u2014\u2014 \u4f4e\u529f\u8017\u3001\u8d85\u8fdc\u8ddd\u79bb\u7684\u7a84\u5e26\u65e0\u7ebf\n\n### 7.1 \u539f\u7406\n\nLoRa\uff08Long Range\uff09\u662f Semtech \u516c\u53f8\u63a8\u51fa\u7684\u57fa\u4e8e\u5541\u557e\u6269\u9891\uff08Chirp Spread Spectrum\uff09\u6280\u672f\u7684\u4f4e\u529f\u8017\u5e7f\u57df\u7f51\u7269\u7406\u5c42\u6280\u672f\u3002RS-485 \u7684 Modbus \u8bbe\u5907\u901a\u8fc7 LoRa \u6570\u4f20\u6a21\u5757\uff08RS-485 \u2192 LoRa\uff09\u5c06\u6570\u636e\u8c03\u5236\u5230 Sub-GHz \u9891\u6bb5\uff08433\/868\/915 MHz\uff09\uff0c\u4ee5\u6781\u4f4e\u7684\u901f\u7387\u6362\u53d6\u4e86\u6781\u8fdc\u7684\u4f20\u8f93\u8ddd\u79bb\u3002\n\nLoRa \u7684\u5bf9\u6807\u7269\u4e0d\u662f WiFi \u6216 4G\u2014\u2014\u5b83\u7684\u5b9a\u4f4d\u662f\u300c\u4f4e\u6570\u636e\u91cf + \u8d85\u8fdc\u8ddd\u79bb + \u8d85\u957f\u7535\u6c60\u5bff\u547d\u300d\u3002\u5178\u578b\u901f\u7387\u4e3a 0.3 kbps \u5230 50 kbps\uff0c\u8fd9\u4e2a\u901f\u7387\u5bf9 Modbus RTU \u6765\u8bf4\u504f\u5c0f\u4f46\u4e0d\u81f4\u547d\u2014\u2014\u5982\u679c\u4f60\u53ea\u8bfb\u51e0\u4e2a\u5173\u952e\u5bc4\u5b58\u5668\uff08\u6bd4\u5982\u6bcf 5 \u5206\u949f\u8bfb\u4e00\u6b21\u6e29\u6e7f\u5ea6\uff09\uff0cLoRa \u5b8c\u5168\u8dd1\u5f97\u52a8\u3002\n\n### 7.2 \u8ddd\u79bb\n\n\u5728\u57ce\u5e02\u73af\u5883\u4e2d\uff0cLoRa \u7684\u53ef\u9760\u4f20\u8f93\u8ddd\u79bb\u7ea6 1-2 \u516c\u91cc\uff1b\u5728\u90ca\u533a\/\u5f00\u9614\u5730\u5e26\uff0c\u53ef\u8fbe 5-15 \u516c\u91cc\u3002\u8fd9\u662f\u76ee\u524d\u975e\u8702\u7a9d LPWAN \u6280\u672f\u4e2d\u8ddd\u79bb\u6700\u8fdc\u7684\u4e4b\u4e00\u3002\u6ce8\u610f LoRa \u9700\u8981\u4e13\u7528\u7684 LoRa \u7f51\u5173\u624d\u80fd\u63a5\u5165\u4e92\u8054\u7f51\u2014\u2014\u5982\u679c\u4f60\u7684\u76ee\u6807\u662f\u8bbe\u5907\u76f4\u63a5\u4e0a\u4e91\uff0c\u9700\u8981\u300cLoRa \u6a21\u5757 + LoRa \u7f51\u5173 + 4G\/\u4ee5\u592a\u7f51\u4e0a\u884c\u300d\u7684\u4e8c\u7ea7\u67b6\u6784\uff0c\u90e8\u7f72\u8d77\u6765\u6bd4 DTU \u590d\u6742\u3002\n\n### 7.3 \u9002\u7528\u573a\u666f\n\nLoRa \u9002\u5408\uff1a\u4f20\u611f\u5668\u6570\u91cf\u591a\u4f46\u6570\u636e\u91cf\u6781\u5c0f\uff08\u6bcf\u4e2a\u8282\u70b9\u6bcf\u5929\u53ea\u53d1\u51e0\u767e\u5b57\u8282\uff09\uff1b\u7535\u6c60\u4f9b\u7535\uff08AA \u7535\u6c60\u53ef\u5de5\u4f5c\u6570\u5e74\uff09\uff1b\u8986\u76d6\u8303\u56f4\u5927\u4f46\u65e0\u8fd0\u8425\u5546\u4fe1\u53f7\uff08\u5982\u504f\u8fdc\u5c71\u533a\u7684\u6c34\u6587\u76d1\u6d4b\u3001\u5927\u9762\u79ef\u519c\u7530\u7684\u571f\u58e4\u6e29\u6e7f\u5ea6\u91c7\u96c6\uff09\u3002\n\nLoRa \u4e0d\u9002\u5408\uff1a\u9700\u8981\u5b9e\u65f6\u63a7\u5236\u7684\u573a\u666f\uff1b\u6570\u636e\u91cf\u504f\u5927\uff08\u9891\u7e41\u8bfb\u53d6\u591a\u5bc4\u5b58\u5668\uff09\uff1b\u5df2\u6709\u8fd0\u8425\u5546\u4fe1\u53f7\u8986\u76d6\u4e14\u61d2\u5f97\u81ea\u5efa LoRa \u7f51\u5173\u3002\n\n## \u516b\u3001\u65b9\u6848\u4e03\uff1aZigBee \u2014\u2014 \u77ed\u8ddd\u79bb\u81ea\u7ec4\u7f51\n\nZigBee \u57fa\u4e8e IEEE 802.15.4 \u6807\u51c6\uff0c\u5de5\u4f5c\u5728 2.4GHz \u9891\u6bb5\uff0c\u7279\u70b9\u662f\u4f4e\u529f\u8017\u3001\u4f4e\u901f\u7387\u3001\u81ea\u7ec4\u7f51\uff08Mesh \u7f51\u7edc\uff09\u3002\u4f20\u8f93\u8ddd\u79bb\u77ed\u2014\u2014\u5178\u578b\u7684 10-100 \u7c73\uff0c\u4f46 ZigBee \u6700\u5927\u4f18\u52bf\u662f\u81ea\u7ec4\u7f51\u8def\u7531\uff1a\u6bcf\u4e2a\u8282\u70b9\u90fd\u80fd\u4e2d\u7ee7\u8f6c\u53d1\uff0c\u6570\u636e\u5305\u53ef\u4ee5\u8df3\u8fc7\u591a\u7ea7\u8282\u70b9\u5230\u8fbe\u76ee\u6807\uff0c\u7406\u8bba\u4e0a\u8986\u76d6\u8303\u56f4\u53ef\u4ee5\u901a\u8fc7\u5bc6\u96c6\u90e8\u7f72\u8282\u70b9\u6765\u5927\u5e45\u6269\u5c55\u3002\n\nZigBee + Modbus \u7684\u5178\u578b\u7528\u6cd5\uff1aRS-485 \u8bbe\u5907\u63a5 ZigBee \u900f\u4f20\u6a21\u5757\uff0c\u591a\u4e2a\u6a21\u5757\u5f62\u6210 Mesh \u7f51\u7edc\uff0c\u6700\u7ec8\u901a\u8fc7\u4e00\u4e2a ZigBee \u534f\u8c03\u5668\uff08Coordinator\uff09\u6c47\u805a\u6570\u636e\u540e\u8f6c\u4e3a\u4e32\u53e3\u6216\u4ee5\u592a\u7f51\u63a5\u5165\u4e0a\u4f4d\u673a\u3002\u9002\u5408\u9700\u8981\u591a\u8282\u70b9\u5206\u5e03\u3001\u4f46\u603b\u8303\u56f4\u5728\u6570\u767e\u7c73\u5185\u3001\u4e0d\u65b9\u4fbf\u5e03\u7ebf\u7684\u573a\u666f\uff08\u5982\u697c\u5b87\u5185\u7684\u667a\u80fd\u7535\u8868\u96c6\u4e2d\u91c7\u96c6\uff09\u3002\n\n\u901f\u7387\uff1a\u7406\u8bba 250 kbps\uff0c\u5b9e\u9645\u53d7 Mesh \u8df3\u6570\u5f71\u54cd\u964d\u81f3 50-100 kbps\u3002\u5bf9\u4e8e Modbus RTU \u5e38\u89c4\u901a\u4fe1\u591f\u7528\u4f46\u4e0d\u5145\u88d5\u3002\u8282\u70b9\u6570\u91cf\u7406\u8bba\u4e0a\u652f\u6301 65535\uff0c\u5b9e\u9645\u4e00\u4e2a ZigBee \u7f51\u7edc\u7a33\u5b9a\u8dd1 100-200 \u4e2a\u8282\u70b9\u5df2\u7ecf\u662f\u5de5\u7a0b\u5408\u7406\u4e0a\u9650\u3002\n\n## \u4e5d\u3001\u65b9\u6848\u516b\uff1aNB-IoT \u2014\u2014 \u8d70\u8fd0\u8425\u5546\u7684\u7a84\u5e26\u7269\u8054\u7f51\n\n### 9.1 \u539f\u7406\n\nNB-IoT\uff08Narrow Band Internet of Things\uff09\u662f\u57fa\u4e8e\u8702\u7a9d\u7f51\u7edc\u7684\u7a84\u5e26\u7269\u8054\u7f51\u6280\u672f\u3002\u5b83\u76f4\u63a5\u90e8\u7f72\u5728\u8fd0\u8425\u5546\u7684 4G\/5G \u57fa\u7ad9\u4e0a\uff0c\u5360\u7528 180kHz \u9891\u5e26\u3002\u548c 4G DTU \u7684\u533a\u522b\u5728\u4e8e\uff1aNB-IoT \u901f\u7387\u66f4\u4f4e\uff08\u4e0a\u884c\u7ea6 62.5 kbps\uff0c\u4e0b\u884c\u7ea6 26 kbps\uff09\u3001\u529f\u8017\u66f4\u4f4e\uff08PSM \u7701\u7535\u6a21\u5f0f\u4e0b AA \u7535\u6c60\u53ef\u5de5\u4f5c 10 \u5e74\uff09\u3001\u8986\u76d6\u66f4\u5f3a\uff08\u6bd4 4G \u591a 20dB \u8986\u76d6\u589e\u76ca\uff0c\u5730\u4e0b\u5ba4\u3001\u7ba1\u9053\u4e95\u4e5f\u80fd\u8fde\uff09\u3002\n\nRS-485 \u8f6c NB-IoT \u6a21\u5757\u5c06 Modbus \u4e32\u53e3\u6570\u636e\u901a\u8fc7 NB-IoT \u7f51\u7edc\u4f20\u8f93\u5230\u4e91\u5e73\u53f0\uff08\u901a\u5e38\u8d70 UDP\/CoAP\/LwM2M \u534f\u8bae\uff09\uff0c\u4e0d\u9700\u8981 DTU \u90a3\u6837\u4f9d\u8d56\u516c\u7f51 TCP \u8fde\u63a5\u3002NB-IoT \u7684\u4f18\u52bf\u662f\u6df1\u5ea6\u8986\u76d6\u2014\u2014GSM\/4G \u4fe1\u53f7\u5230\u4e0d\u4e86\u7684\u5730\u4e0b\u914d\u7535\u5ba4\uff0cNB-IoT \u7684 20dB \u989d\u5916\u94fe\u8def\u9884\u7b97\u53ef\u80fd\u521a\u597d\u591f\u3002\n\n### 9.2 \u5173\u952e\u7ea6\u675f\n\nNB-IoT \u6709 6-10 \u79d2\u7684\u7f51\u7edc\u5ef6\u8fdf\uff0c\u8fd9\u662f\u5b83\u548c 4G DTU \u7684\u6700\u5927\u533a\u522b\u3002\u5bf9\u4e8e Modbus \u534f\u8bae\u7684\u4e3b\u4ece\u8f6e\u8be2\u6a21\u578b\uff0c\u8fd9\u4e2a\u7ea7\u522b\u7684\u5ef6\u8fdf\u610f\u5473\u7740\u4f60\u4e0d\u80fd\u6307\u671b NB-IoT \u505a\u5b9e\u65f6\u63a7\u5236\u2014\u2014\u5b83\u9002\u5408\u5b9a\u65f6\u4e0a\u62a5\uff08\u5982\u6bcf 15 \u5206\u949f\u4e0a\u62a5\u4e00\u6b21\u7535\u91cf\u6570\u636e\uff09\uff0c\u4e0d\u9002\u5408\u5b9e\u65f6\u54cd\u5e94\u4e3b\u7ad9\u67e5\u8be2\u3002\n\n\u53e6\u5916 NB-IoT \u4e0d\u652f\u6301\u57fa\u7ad9\u95f4\u6f2b\u6e38\uff08\u79fb\u52a8\u6027\u5f31\uff09\uff0c\u57fa\u7ad9\u5207\u6362\u65f6\u901a\u4fe1\u4f1a\u4e2d\u65ad\u3002\u8fd9\u610f\u5473\u7740 NB-IoT \u8bbe\u5907\u5fc5\u987b\u56fa\u5b9a\u4f4d\u7f6e\uff0c\u4e0d\u80fd\u50cf 4G DTU \u90a3\u6837\u88c5\u5728\u79fb\u52a8\u8bbe\u5907\u4e0a\u3002\n\n### 9.3 \u9002\u7528\n\n\u57ce\u5e02\u73af\u5883\u4e0b\u7684\u8d85\u4f4e\u529f\u8017\u6284\u8868\uff08\u6c34\u8868\u3001\u71c3\u6c14\u8868\u3001\u7535\u8868\uff09\u3001\u56fa\u5b9a\u4f4d\u7f6e\u7684\u4f20\u611f\u5668\u6570\u636e\u5b9a\u65f6\u4e0a\u62a5\u3002\u4e0d\u9002\u5408\u5b9e\u65f6\u4ea4\u4e92\u6216\u79fb\u52a8\u573a\u666f\u3002\n\n## \u5341\u3001\u65b9\u6848\u4e5d\uff1aPLC \u4e91\u7f51\u5173 \u2014\u2014 \u8ba9 Modbus \u8bbe\u5907\u652f\u6301\u8fdc\u7a0b\u7f16\u7a0b\u548c\u8c03\u8bd5\n\nPLC \u4e91\u7f51\u5173\u662f\u4e00\u79cd\u300c\u589e\u5f3a\u578b DTU\u300d\u2014\u2014\u5b83\u4e0d\u4ec5\u80fd\u505a\u4e32\u53e3\u6570\u636e\u900f\u4f20\uff0c\u8fd8\u652f\u6301\u4ee5\u592a\u7f51\u7f51\u53e3\u900f\u4f20\u548c USB \u900f\u4f20\uff0c\u8ba9\u5de5\u7a0b\u5e08\u53ef\u4ee5\u8fdc\u7a0b\u5bf9 PLC\u3001HMI\uff08\u4eba\u673a\u754c\u9762\uff09\u8fdb\u884c\u7a0b\u5e8f\u4e0a\u4e0b\u8f7d\u548c\u5728\u7ebf\u8c03\u8bd5\u3002\u5bf9\u4e8e\u897f\u95e8\u5b50\u3001\u4e09\u83f1\u3001\u6b27\u59c6\u9f99\u7684 PLC \u7f16\u7a0b\u8f6f\u4ef6\u6765\u8bf4\uff0c\u5b83\u4eec\u9700\u8981\u901a\u8fc7\u7279\u5b9a\u7684\u4ee5\u592a\u7f51\u534f\u8bae\uff08\u5982 S7\u3001MC Protocol\u3001FINS\uff09\u4e0e PLC \u901a\u4fe1\u2014\u2014\u666e\u901a\u7684\u4e32\u53e3\u900f\u4f20 DTU \u505a\u4e0d\u4e86\uff0cPLC \u4e91\u7f51\u5173\u5185\u7f6e\u4e86\u8fd9\u4e9b\u5de5\u4e1a\u4ee5\u592a\u7f51\u534f\u8bae\u7684\u8f6c\u53d1\u652f\u6301\u3002\n\n\u540c\u6837\u9002\u7528\u7684\u662f PPI\/MPI \u8f6c\u4ee5\u592a\u7f51\u534f\u8bae\u8f6c\u6362\u5668\u2014\u2014\u5f88\u591a\u8001\u897f\u95e8\u5b50 S7-200 \u53ea\u652f\u6301 PPI \u534f\u8bae\uff0c\u901a\u8fc7 PPI \u8f6c\u4ee5\u592a\u7f51\u8f6c\u6362\u5668\u53ef\u4ee5\u5b9e\u73b0\u5728\u4e0d\u5360\u7528 PLC \u539f\u6709\u901a\u4fe1\u53e3\u7684\u60c5\u51b5\u4e0b\uff0c\u8ba9\u89e6\u6478\u5c4f\u3001\u4e0a\u4f4d\u673a\u901a\u8fc7\u4ee5\u592a\u7f51\u4e0e PLC \u4ea4\u4e92\u3002\u8fd9\u672c\u8d28\u4e0a\u4e5f\u662f Modbus \u4f20\u8f93\u94fe\u8def\u4e0a\u7684\u4e00\u79cd\u8865\u5145\u65b9\u6848\u3002\n\n## \u5341\u4e00\u3001\u65b9\u6848\u901f\u67e5\uff1a\u4e00\u5f20\u8868\u8986\u76d6\u5168\u90e8\u9009\u578b\n\n\u65b9\u6848\u8ddd\u79bb\u901f\u7387\u7ebf\u7f06\/SIM\u6700\u4f73\u573a\u666fRS-485 \u76f4\u8fde\u22641200m\u2264115.2kbps\u53cc\u7ede\u7ebf\u6807\u51c6\u6709\u7ebfRS-485 \u4e2d\u7ee7\u5668\u22649.6km\u2264115.2kbps\u53cc\u7ede\u7ebf\u540c\u4e00\u5382\u533a 2-3km\u5149\u7aef\u673a(\u591a\u6a21)2-5km\u22641Mbps\u591a\u6a21\u5149\u7ea4\u56ed\u533a\u5185\u5149\u7aef\u673a(\u5355\u6a21)20-80km\u22641Mbps\u5355\u6a21\u5149\u7ea4\u8de8\u5382\u533a\/\u57ce\u5e024G DTU\u5168\u56fd\u2264115.2kbpsSIM\u5361\u5206\u5e03\u70b9\/\u79fb\u52a8\u8bbe\u5907\u6570\u4f20\u7535\u53f0 433M3-8km\u2264115.2kbps\u65e0\u79c1\u6709\u65e0\u7ebf\/\u65e0SIMWiFi \u4e32\u53e3\u670d\u52a1\u5668100-500m\u2264150Mbps\u65e0\u5de5\u5382\u5c40\u57df\u7f51LoRa1-15km\u226450kbps\u65e0\u4f4e\u6570\u636e\u91cf\u5e7f\u57dfZigBee10-100m\/\u8df3\u2264250kbps\u65e0Mesh\u81ea\u7ec4\u7f51NB-IoT\u5168\u56fd\u226462.5kbpsSIM\u5361\u8d85\u4f4e\u529f\u8017\u5b9a\u65f6\u4e0a\u62a5\n\n## \u5341\u4e8c\u3001\u9009\u578b\u51b3\u7b56\u56db\u6b65\u6cd5\n\n\u9762\u5bf9\u300cModbus \u8bbe\u5907\u8981\u8fdc\u8ddd\u79bb\u63a5\u5165\u300d\u7684\u9700\u6c42\uff0c\u6309\u8fd9\u4e2a\u987a\u5e8f\u505a\u51b3\u5b9a\uff1a\n\n**\u7b2c\u4e00\u6b65\uff1a\u7b97\u8ddd\u79bb\u3002** \u73b0\u573a\u8bbe\u5907\u5230\u4e2d\u63a7\u5ba4\/\u670d\u52a1\u5668\u7684\u76f4\u7ebf\u8ddd\u79bb\u662f\u591a\u5c11\uff1f\u5c0f\u4e8e 1.2 \u516c\u91cc\u2192\u76f4\u63a5\u7528 RS-485 \u8d70\u7ebf\uff08\u52a0\u7ec8\u7aef\u7535\u963b\uff09\u30021.2~3 \u516c\u91cc\u2192\u8003\u8651\u4e2d\u7ee7\u5668\u6216\u5149\u7aef\u673a\u30023 \u516c\u91cc\u4ee5\u4e0a\u2192\u5149\u7aef\u673a\uff08\u5355\u6a21\uff09\u6216\u65e0\u7ebf\uff084G DTU\/\u6570\u4f20\u7535\u53f0\/ LoRa\uff09\u3002\n\n**\u7b2c\u4e8c\u6b65\uff1a\u770b\u73af\u5883\u3002** \u6709\u6ca1\u6709\u5f3a\u7535\u78c1\u5e72\u6270\uff08\u9ad8\u538b\u7ebf\u3001\u53d8\u9891\u7535\u673a\u3001\u7535\u710a\u8f66\u95f4\uff09\uff1f\u6709\u2192\u5fc5\u987b\u7528\u5149\u7ea4\uff08\u5149\u7aef\u673a\uff09\uff0c\u94dc\u7ebf\u6491\u4e0d\u4f4f\u3002\u6709\u6ca1\u6709\u8fd0\u8425\u5546\u4fe1\u53f7\u8986\u76d6\uff1f\u6709\u4e14\u7a33\u5b9a\u21924G DTU \u6700\u7701\u4e8b\uff1b\u6ca1\u6709\u2192\u81ea\u89c9\u7528\u6570\u4f20\u7535\u53f0\u6216 LoRa\u3002\n\n**\u7b2c\u4e09\u6b65\uff1a\u7b97\u6570\u636e\u91cf\u3002** \u6709\u591a\u5c11\u4e2a Modbus \u5bc4\u5b58\u5668\u8981\u8bfb\uff1f\u8f6e\u8be2\u5468\u671f\u8981\u6c42\u591a\u5c11\uff1f\u5982\u679c\u662f\u5b9e\u65f6\u63a7\u5236\u7ea7\u522b\uff08< 100ms\uff09\u2192 \u5fc5\u987b\u7528\u6709\u7ebf\uff08\u76f4\u8fde\/\u4e2d\u7ee7\/\u5149\u7aef\u673a\uff09\uff0c\u65e0\u7ebf\u65b9\u6848\u5e73\u5747\u5ef6\u8fdf\u5728\u6b64\u4e4b\u4e0a\u3002\u5982\u679c\u662f\u5206\u949f\u7ea7\u5b9a\u65f6\u91c7\u96c6\u2192 LoRa\u3001NB-IoT \u90fd\u884c\u3002\u6d41\u5f0f\u5927\u6570\u636e\u91cf\u2192 WiFi \u6216\u5149\u7ea4\uff0c\u7a84\u5e26\u65e0\u7ebf\u625b\u4e0d\u4f4f\u3002\n\n**\u7b2c\u56db\u6b65\uff1a\u7b97\u94b1\u3002** \u4e00\u6b21\u6027\u65bd\u5de5\u6210\u672c\uff08\u5e03\u7ebf + \u8bbe\u5907\uff09vs \u6301\u7eed\u8fd0\u8425\u6210\u672c\uff08SIM \u5361\u6d41\u91cf\u8d39\uff09\u3002\u901a\u5e38 2 \u516c\u91cc\u4ee5\u5185\/\u5de5\u4e1a\u5382\u533a\/\u4e00\u6b21\u65bd\u5de5 \u2192 \u6709\u7ebf\uff08\u5149\u7aef\u673a\u6216\u4e2d\u7ee7\u5668\uff09\uff1b\u8de8\u5730\u533a\/\u591a\u4e2a\u504f\u8fdc\u70b9\/\u5feb\u901f\u4e0a\u7ebf \u2192 4G DTU\uff1b\u96f6\u8fd0\u8425\u8d39\u9700\u6c42 \u2192 \u6570\u4f20\u7535\u53f0\u6216 LoRa\u3002\n\n\u6ca1\u6709\u4e00\u79cd\u65b9\u6848\u662f\u300c\u6700\u597d\u7684\u300d\u2014\u2014\u5168\u770b\u4f60\u73b0\u573a\u7684\u7269\u7406\u7ea6\u675f\u30021200 \u7c73\u7684 Modbus over \u53cc\u7ede\u7ebf\u80fd\u641e\u5b9a\u7684\uff0c\u5c31\u522b\u4e0a 4G\uff1b4G \u6709\u4fe1\u53f7\u7684\u5730\u65b9\uff0c\u522b\u81ea\u5df1\u62c9\u5149\u7ea4\u8de8\u9ad8\u901f\u8def\uff1b\u5149\u7ea4\u5df2\u7ecf\u8fdb\u7ba1\u5eca\u4e86\uff0c\u5c31\u522b\u518d\u7528\u94dc\u7ebf\u3002\u5de5\u5177\u5bf9\u8def\uff0c\u6d3b\u5c31\u597d\u5e72\u3002\n\n\u6709\u95ee\u9898\u518d\u804a\u3002\n\n---\n*modbus.cn*\n"