{"id":92301,"date":"2024-04-30T15:03:17","date_gmt":"2024-04-30T07:03:17","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=92301"},"modified":"2024-06-07T15:21:55","modified_gmt":"2024-06-07T07:21:55","slug":"gwlwmkdryt","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/92301.html","title":{"rendered":"4G\u7269\u8054\u7f51\u6a21\u5757\u7684RS485\u7528\u9014"},"content":{"rendered":"\n<p>\u3000\u3000<strong>4G\u7269\u8054\u7f51\u6a21\u5757<\/strong>\u7684<strong>RS485<\/strong>\u7528\u9014\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000\u5de5\u4e1a\u81ea\u52a8\u5316\u9886\u57df\uff1a\u901a\u8fc7RS485\u63a5\u53e3\uff0c4G\u7269\u8054\u7f51\u6a21\u5757\u53ef\u4ee5\u4e0ePLC(\u53ef\u7f16\u7a0b\u903b\u8f91\u63a7\u5236\u5668)\u3001\u4f20\u611f\u5668\u7b49\u8bbe\u5907\u8fdb\u884c\u901a\u4fe1\uff0c\u5b9e\u73b0\u5bf9\u5de5\u4e1a\u8bbe\u5907\u7684\u8fdc\u7a0b\u76d1\u63a7\u548c\u63a7\u5236\u3002\u8fd9\u4f7f\u5f97\u5de5\u5382\u80fd\u591f\u5c06\u8bbe\u5907\u7684\u8fd0\u884c\u6570\u636e\u4f20\u8f93\u5230\u4e91\u5e73\u53f0\u4e0a\uff0c\u4ece\u800c\u5b9e\u73b0\u5bf9\u8bbe\u5907\u7684\u8fdc\u7a0b\u7ba1\u7406\u548c\u6545\u969c\u8bca\u65ad\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u8fdc\u7a0b\u76d1\u63a7\uff1a4G\u7269\u8054\u7f51\u6a21\u5757\u901a\u8fc7\u8fde\u63a5\u4e92\u8054\u7f51\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u7269\u8054\u7f51\u8bbe\u5907\u7684\u8fdc\u7a0b\u76d1\u63a7\u548c\u7ba1\u7406\u3002\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u76d1\u63a7\u6548\u7387\uff0c\u4e5f\u589e\u5f3a\u4e86\u7cfb\u7edf\u7684\u7075\u6d3b\u6027\u548c\u6269\u5c55\u6027\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u6570\u636e\u4f20\u8f93\uff1aRS485\u901a\u4fe1\u6280\u672f\u5141\u8bb8\u7269\u8054\u7f51\u8bbe\u5907\u91c7\u96c6\u5230\u7684\u6570\u636e\u901a\u8fc74G\u7269\u8054\u7f51\u6a21\u5757\u8fdb\u884c\u4f20\u8f93\u3002\u8fd9\u79cd\u6570\u636e\u4f20\u8f93\u65b9\u5f0f\u652f\u6301\u591a\u79cd\u7f51\u7edc\u534f\u8bae\uff0c\u5982TCP\/UDP\u3001HTTP\u3001MQTT\u7b49\uff0c\u786e\u4fdd\u4e86\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\u548c\u6548\u7387\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u652f\u6301\u591a\u70b9\u901a\u4fe1\uff1aRS485\u4f5c\u4e3a\u4e00\u79cd\u591a\u70b9\u901a\u4fe1\u534f\u8bae\uff0c\u5141\u8bb8\u591a\u4e2a\u8bbe\u5907\u5728\u540c\u4e00\u603b\u7ebf\u4e0a\u8fdb\u884c\u901a\u4fe1\uff0c\u6bcf\u4e2a\u8bbe\u5907\u90fd\u53ef\u4ee5\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u3002\u8fd9\u79cd\u7279\u6027\u4f7f\u5f97RS485\u5728\u9700\u8981\u591a\u8bbe\u5907\u95f4\u901a\u4fe1\u7684\u573a\u666f\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u5982\u667a\u80fd\u5bb6\u5c45\u3001\u57ce\u5e02\u7ba1\u7406\u3001\u667a\u80fd\u4ea4\u901a\u7b49\u9886\u57df\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u63d0\u9ad8\u8bbe\u5907\u667a\u80fd\u5316\u6c34\u5e73\uff1a\u968f\u7740\u7269\u8054\u7f51\u6280\u672f\u7684\u5feb\u901f\u53d1\u5c55\uff0c\u8d8a\u6765\u8d8a\u591a\u7684\u8bbe\u5907\u63a5\u5165\u5230\u7269\u8054\u7f51\u5e73\u53f0\u4e2d\u3002RS485\u534f\u8bae\u8bbe\u5907\u4f5c\u4e3a\u4e00\u79cd\u5e38\u89c1\u7684\u5de5\u4e1a\u901a\u4fe1\u534f\u8bae\u8bbe\u5907\uff0c\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u3001\u667a\u80fd\u5efa\u7b51\u7b49\u9886\u57df\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u5b9e\u73b0\u7269\u8054\u7f51\u5e73\u53f0\u4e0eRS485\u534f\u8bae\u8bbe\u5907\u7684\u65e0\u7f1d\u5bf9\u63a5\uff0c\u5bf9\u4e8e\u63d0\u9ad8\u8bbe\u5907\u667a\u80fd\u5316\u6c34\u5e73\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000<strong>4G\u7269\u8054\u7f51\u6a21\u5757\u7684RS485\u7528\u9014\u4e3b\u8981\u4f53\u73b0\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u3001\u8fdc\u7a0b\u76d1\u63a7\u3001\u6570\u636e\u4f20\u8f93\u3001\u652f\u6301\u591a\u70b9\u901a\u4fe1\u4ee5\u53ca\u63d0\u9ad8\u8bbe\u5907\u667a\u80fd\u5316\u6c34\u5e73\u7b49\u65b9\u9762\u3002\u8fd9\u4e9b\u5e94\u7528\u5c55\u793a\u4e86RS485\u6280\u672f\u5728\u7269\u8054\u7f51\u9886\u57df\u7684\u5e7f\u6cdb\u5e94\u7528\u548c\u91cd\u8981\u6027\u3002<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 4G\u7269\u8054\u7f51\u6a21\u5757\u4e0eRS485\u901a\u4fe1\u6280\u672f\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u9886\u57df\u7684\u5177\u4f53\u5e94\u7528\u6848\u4f8b\u662f\u4ec0\u4e48?<\/h2>\n\n\n\n<p>\u3000\u30004G\u7269\u8054\u7f51\u6a21\u5757\u4e0eRS485\u901a\u4fe1\u6280\u672f\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u9886\u57df\u7684\u5177\u4f53\u5e94\u7528\u6848\u4f8b\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000\u5728\u94a2\u94c1\u5236\u9020\u3001\u5316\u5de5\u76d1\u63a7\u3001\u519c\u4e1a\u81ea\u52a8\u5316\u3001\u7535\u529b\u53c2\u6570\u76d1\u63a7\u7b49\u9886\u57df\uff0cRS485\u534f\u8bae\u88ab\u5e7f\u6cdb\u5e94\u7528\u3002\u8fd9\u4e9b\u5e94\u7528\u573a\u666f\u5c55\u793a\u4e86RS485\u5728\u4e0d\u540c\u5de5\u4e1a\u81ea\u52a8\u5316\u63a7\u5236\u7cfb\u7edf\u4e2d\u7684\u91cd\u8981\u4f5c\u7528\u3002<\/li>\n\n\n\n<li>\u3000\u3000N510\u4f5c\u4e3a\u4e00\u6b3eRS485\u5355\u4e32\u53e3\u670d\u52a1\u5668\uff0c\u5728\u4f20\u7edf\u5de5\u4e1a\u573a\u666f\u4e2d\u5e94\u7528\uff0c\u6709\u6548\u89e3\u51b3\u4e86\u5de5\u4eba\u9700\u8981\u5728\u73b0\u573a\u76d1\u63a7\u8bbe\u5907\u7684\u96be\u9898\uff0c\u8282\u7701\u4e86\u4eba\u529b\u6210\u672c\uff0c\u540c\u65f6\u589e\u52a0\u4e86\u751f\u4ea7\u6548\u7387\u53ca\u5b89\u5168\u7cfb\u6570\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u5728\u519c\u4e1a\u751f\u4ea7\u4e2d\uff0cRS485\u7684\u5e94\u7528\u4f7f\u5f97\u81ea\u52a8\u5316\u7cfb\u7edf\u7684\u5e94\u7528\u65e5\u76ca\u5e7f\u6cdb\u3002\u8fd9\u79cd\u901a\u4fe1\u65b9\u5f0f\u56e0\u5176\u9ad8\u53ef\u9760\u6027\u3001\u9ad8\u6297\u5e72\u6270\u80fd\u529b\u548c\u826f\u597d\u7684\u4f20\u8f93\u8ddd\u79bb\u7279\u6027\uff0c\u5728\u519c\u4e1a\u81ea\u52a8\u5316\u7cfb\u7edf\u4e2d\u53d1\u6325\u4e86\u91cd\u8981\u4f5c\u7528\u3002<\/li>\n\n\n\n<li>\u3000\u3000RS485\u901a\u4fe1\u6280\u672f\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u548c\u8bbe\u5907\u76d1\u63a7\u9886\u57df\u5f97\u5230\u4e86\u5e7f\u6cdb\u5e94\u7528\uff0c\u7279\u522b\u662f\u5728LoRa\u7f51\u5173\u4e2d\u7684\u5e94\u7528\uff0c\u5c55\u73b0\u4e86\u5176\u5728\u7269\u8054\u7f51\u9886\u57df\u5c24\u5176\u662f\u5728\u9700\u8981\u8986\u76d6\u5e7f\u9614\u5730\u533a\u7684\u5e94\u7528\u573a\u666f\u4e2d\u7684\u5de8\u5927\u6f5c\u529b\u3002<\/li>\n\n\n\n<li>\u3000\u3000Modbus RS-485\u4f5c\u4e3a\u4e00\u79cd\u5e38\u7528\u7684\u5de5\u4e1a\u901a\u4fe1\u534f\u8bae\uff0c\u5728\u5b9e\u73b0\u5de5\u4e1a\u81ea\u52a8\u5316\u901a\u4fe1\u4e2d\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\u3002\u5b83\u652f\u6301\u591a\u79cd\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u5305\u62ecPLC\u3001\u4f20\u611f\u5668\u7b49\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u5b9e\u73b0\u5de5\u4e1a\u81ea\u52a8\u5316\u63a7\u5236\u548c\u76d1\u6d4b\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000\u8fd9\u4e9b\u6848\u4f8b\u8868\u660e\uff0c4G\u7269\u8054\u7f51\u6a21\u5757\u4e0eRS485\u901a\u4fe1\u6280\u672f\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u9886\u57df\u7684\u5e94\u7528\u975e\u5e38\u5e7f\u6cdb\uff0c\u4ece\u4f20\u7edf\u7684\u5236\u9020\u4e1a\u5230\u73b0\u4ee3\u519c\u4e1a\uff0c\u518d\u5230\u667a\u80fd\u8bbe\u5907\u7684\u76d1\u63a7\u548c\u63a7\u5236\uff0c\u90fd\u80fd\u770b\u5230\u5b83\u4eec\u7684\u8eab\u5f71\u3002\u901a\u8fc7\u8fd9\u4e9b\u6280\u672f\u7684\u5e94\u7528\uff0c\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u751f\u4ea7\u6548\u7387\u548c\u5b89\u5168\u6027\uff0c\u8fd8\u5b9e\u73b0\u4e86\u8d44\u6e90\u7684\u6709\u6548\u7ba1\u7406\u548c\u4f18\u5316\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 RS485\u901a\u4fe1\u534f\u8bae\u5982\u4f55\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\u548c\u6548\u7387?<\/h2>\n\n\n\n<p>\u3000\u3000RS485\u901a\u4fe1\u534f\u8bae\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\u548c\u6548\u7387\u4e3b\u8981\u901a\u8fc7\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u5b9e\u73b0\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000\u4f18\u5316\u7b97\u6cd5\u548c\u901a\u4fe1\u534f\u8bae\uff1a\u901a\u8fc7\u91c7\u7528\u66f4\u4f18\u7684\u8c03\u5236\u89e3\u8c03\u7b97\u6cd5\u548c\u901a\u4fe1\u534f\u8bae\uff0c\u4ee5\u53ca\u5bf9RS485 Modbus\u901a\u4fe1\u7cfb\u7edf\u8fdb\u884c\u6027\u80fd\u8bc4\u4f30\u548c\u4f18\u5316\u8c03\u6574\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u548c\u51c6\u786e\u6027\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u9ad8\u901f\u3001\u9ad8\u7075\u6d3b\u6027\u3001\u9ad8\u53ef\u9760\u6027\uff1aRS485\u603b\u7ebf\u6280\u672f\u5177\u6709\u9ad8\u901f\u3001\u9ad8\u7075\u6d3b\u6027\u3001\u9ad8\u53ef\u9760\u6027\u7b49\u7279\u70b9\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u5de5\u4e1a\u63a7\u5236\u73af\u5883\u4e0b\u7684\u901a\u4fe1\u9700\u6c42\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u6570\u636e\u5305\u683c\u5f0f\u8bbe\u8ba1\uff1a\u901a\u8fc7\u8bbe\u8ba1\u5305\u542b\u5f15\u5bfc\u7801\u3001\u957f\u5ea6\u7801\u3001\u5730\u5740\u7801\u3001\u547d\u4ee4\u7801\u3001\u6570\u636e\u3001\u6821\u9a8c\u7801\u3001\u5c3e\u7801\u7b49\u5143\u7d20\u7684\u6570\u636e\u5305\u683c\u5f0f\uff0c\u6bcf\u4e2a\u6570\u636e\u5305\u957f\u5ea6\u8fbe20~30\u5b57\u8282\uff0c\u5e76\u5bf9\u6bcf\u4e2a\u5b57\u8282\u8fdb\u884c\u6821\u9a8c\uff0c\u4ee5\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u8d28\u91cf\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u652f\u6301\u591a\u8bbe\u5907\u8fde\u63a5\uff1aRS485\u80fd\u591f\u652f\u6301\u591a\u8bbe\u5907\u8fde\u63a5\uff0c\u8fd9\u63d0\u9ad8\u4e86\u5176\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u7075\u6d3b\u6027\u548c\u6548\u7387\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u4e2d\u7ebf\u5708\u6280\u672f\uff1aRS485\u4e2d\u7ebf\u5708\u7684\u9ad8\u53ef\u9760\u6027\u786e\u4fdd\u4e86\u6570\u636e\u4f20\u8f93\u7684\u51c6\u786e\u6027\u548c\u53ef\u9760\u6027\uff0c\u5373\u4f7f\u5728\u6076\u52a3\u7684\u73af\u5883\u4e2d\u4e5f\u80fd\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u7684\u8d28\u91cf\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u7535\u6c14\u7279\u6027\uff1aRS485\u7684\u7535\u6c14\u7279\u6027(\u5982\u9ad8\u901f\u4f20\u8f93\u3001\u9ad8\u7a33\u5b9a\u6027\u548c\u9ad8\u53ef\u9760\u6027)\u51b3\u5b9a\u4e86\u5176\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u4e2d\u4f20\u8f93\u6570\u636e\u7684\u80fd\u529b\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u9519\u8bef\u68c0\u6d4b\u673a\u5236\uff1a\u91c7\u7528CRC\u6821\u9a8c\u6216\u5176\u4ed6\u9519\u8bef\u68c0\u6d4b\u673a\u5236\u6765\u786e\u4fdd\u6570\u636e\u7684\u51c6\u786e\u6027\uff0c\u4ece\u800c\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u6ce2\u7279\u7387\u8ba1\u7b97\uff1a\u5408\u7406\u8ba1\u7b97\u548c\u5e94\u7528485\u6ce2\u7279\u7387\u5bf9\u4e8e\u5de5\u4e1a\u63a7\u5236\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u81f3\u5173\u91cd\u8981\uff0c\u76f4\u63a5\u5f71\u54cd\u7740\u6570\u636e\u4f20\u8f93\u7684\u901f\u5ea6\u548c\u8d28\u91cf\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u65f6\u95f4\u504f\u79fb\u91cf\u8ba1\u7b97\uff1a\u5728RS485\u901a\u8baf\u7684\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u8ba1\u7b97\u6536\u53d1\u4fe1\u606f\u7684\u65f6\u95f4\u5dee\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u4e3b\u8981\u662f\u4e3a\u4e86\u786e\u4fdd\u901a\u8baf\u7684\u53ef\u9760\u6027\u3001\u540c\u6b65\u6027\u548c\u7cbe\u786e\u6027\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000\u901a\u8fc7\u4e0a\u8ff0\u63aa\u65bd\uff0cRS485\u901a\u4fe1\u534f\u8bae\u80fd\u591f\u5728\u591a\u4e2a\u8bbe\u5907\u4e4b\u95f4\u8fdb\u884c\u9ad8\u6548\u4e14\u53ef\u9760\u7684\u6570\u636e\u4f20\u8f93\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 \u5728\u8fdc\u7a0b\u76d1\u63a7\u7cfb\u7edf\u4e2d\uff0c4G\u7269\u8054\u7f51\u6a21\u5757\u901a\u8fc7RS485\u63a5\u53e3\u5b9e\u73b0\u54ea\u4e9b\u9ad8\u7ea7\u529f\u80fd?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728\u8fdc\u7a0b\u76d1\u63a7\u7cfb\u7edf\u4e2d\uff0c4G\u7269\u8054\u7f51\u6a21\u5757\u901a\u8fc7RS485\u63a5\u53e3\u5b9e\u73b0\u7684\u9ad8\u7ea7\u529f\u80fd\u4e3b\u8981\u5305\u62ec\u8fdc\u7a0b\u63a7\u5236\u3001\u8fdc\u7a0b\u76d1\u63a7\u3001\u8fdc\u7a0b\u62a5\u8b66\u7b49\u3002RS485\u63a5\u53e3\u53ef\u4ee5\u7528\u4e8e\u7f51\u7edc\u901a\u4fe1\uff0c\u5b9e\u73b0\u8fdc\u7a0b\u63a7\u5236\u8bbe\u5907\u7684\u529f\u80fd\uff0c\u5982\u8fdc\u7a0b\u76d1\u63a7\u3001\u8fdc\u7a0b\u62a5\u8b66\u548c\u8fdc\u7a0b\u63a7\u5236\u7b49\u3002\u6b64\u5916\uff0cRS485\u63a5\u53e3\u7684\u5e94\u7528\u573a\u666f\u975e\u5e38\u5e7f\u6cdb\uff0c\u5305\u62ec\u5de5\u4e1a\u63a7\u5236\u3001\u81ea\u52a8\u5316\u3001\u667a\u80fd\u5bb6\u5c45\u7b49\u9886\u57df\uff0c\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7RS485\u63a5\u53e3\u8fdb\u884c\u8fde\u63a5\uff0c\u5e76\u914d\u7f6e\u76f8\u5e94\u7684\u53c2\u6570\u548c\u8bbe\u7f6e\uff0c\u4ee5\u5b9e\u73b0\u8fdc\u7a0b\u76d1\u63a7\u548c\u7ba1\u7406\u7684\u529f\u80fd\uff0c\u4f8b\u5982\u67e5\u770b\u95e8\u53e3\u60c5\u51b5\u3001\u63a5\u542c\u901a\u8bdd\u8bf7\u6c42\u3001\u63a7\u5236\u5f00\u95e8\u7b49\u529f\u80fd\u3002\u8fd9\u8868\u660eRS485\u63a5\u53e3\u5728\u8fdc\u7a0b\u76d1\u63a7\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\u4e0d\u4ec5\u9650\u4e8e\u57fa\u672c\u7684\u6570\u636e\u4f20\u8f93\uff0c\u8fd8\u5305\u62ec\u4e86\u66f4\u4e3a\u590d\u6742\u7684\u63a7\u5236\u548c\u7ba1\u7406\u529f\u80fd\uff0c\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u53ef\u9760\u6027\u548c\u5b89\u5168\u6027\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u5f97\u51fa\u7ed3\u8bba\uff0c4G\u7269\u8054\u7f51\u6a21\u5757\u901a\u8fc7RS485\u63a5\u53e3\u5728\u8fdc\u7a0b\u76d1\u63a7\u7cfb\u7edf\u4e2d\u5b9e\u73b0\u4e86\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u8fdc\u7a0b\u63a7\u5236\u3001\u8fdc\u7a0b\u76d1\u63a7\u3001\u8fdc\u7a0b\u62a5\u8b66\u5728\u5185\u7684\u591a\u79cd\u9ad8\u7ea7\u529f\u80fd\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 \u5982\u4f55\u89e3\u51b3RS485\u591a\u70b9\u901a\u4fe1\u4e2d\u7684\u51b2\u7a81\u548c\u9519\u8bef\u95ee\u9898?<\/h2>\n\n\n\n<p>\u3000\u3000\u89e3\u51b3RS485\u591a\u70b9\u901a\u4fe1\u4e2d\u7684\u51b2\u7a81\u548c\u9519\u8bef\u95ee\u9898\uff0c\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul 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