{"id":94637,"date":"2024-06-28T14:33:57","date_gmt":"2024-06-28T06:33:57","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=94637"},"modified":"2024-06-28T14:34:03","modified_gmt":"2024-06-28T06:34:03","slug":"xyhmxyqb","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/94637.html","title":{"rendered":"485\u534f\u8bae\u548cModbus\u534f\u8bae\u533a\u522b"},"content":{"rendered":"\n<p>\u3000\u3000<strong>485\u534f\u8bae<\/strong>\u548c<strong>Modbus\u534f\u8bae<\/strong>\u5728\u5de5\u4e1a\u901a\u4fe1\u9886\u57df\u4e2d\u90fd\u6709\u5e7f\u6cdb\u5e94\u7528\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u5b58\u5728\u4e00\u4e9b\u5173\u952e\u7684\u533a\u522b\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4ece\u7269\u7406\u5c42\u6807\u51c6\u6765\u770b\uff0c485\u534f\u8bae\u4e3b\u8981\u662f\u4e00\u4e2a\u7269\u7406\u63a5\u53e3\u6807\u51c6\uff0c\u901a\u5e38\u6307\u7684\u662fRS-485.\u8fd9\u662f\u4e00\u79cd\u5dee\u5206\u4fe1\u53f7\u4f20\u8f93\u6280\u672f\uff0c\u7528\u4e8e\u957f\u8ddd\u79bb\u3001\u591a\u8bbe\u5907\u7684\u4e32\u884c\u901a\u4fe1\u3002\u800cModbus\u534f\u8bae\u5219\u662f\u4e00\u79cd\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u5b83\u5b9a\u4e49\u4e86\u6570\u636e\u4ea4\u6362\u7684\u683c\u5f0f\u548c\u5185\u5bb9\uff0c\u800c\u4e0d\u7279\u5b9a\u4e8e\u4efb\u4f55\u7269\u7406\u5c42\u6807\u51c6\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u4f20\u8f93\u6a21\u5f0f\u4e0a\uff0c485\u534f\u8bae\u4f7f\u7528\u534a\u53cc\u5de5\u4f20\u8f93\u6a21\u5f0f\uff0c\u652f\u6301\u6700\u5927\u8ddd\u79bb\u4e3a1200\u7c73\uff0c\u4ee5\u53ca\u6700\u5927\u901f\u7387\u4e3a10Mbps\u3002\u800cModbus\u534f\u8bae\u4f7f\u7528\u5168\u53cc\u5de5\u4f20\u8f93\u6a21\u5f0f\uff0c\u652f\u6301\u6700\u5927\u8ddd\u79bb\u4e3a4000\u7c73\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u7f51\u7edc\u62d3\u6251\u65b9\u9762\uff0c485\u534f\u8bae\u53ef\u4ee5\u652f\u6301\u591a\u8fbe128\u4e2a\u8282\u70b9\u7684\u7f51\u7edc\u62d3\u6251\uff0c\u800cModbus\u534f\u8bae\u53ef\u4ee5\u652f\u6301\u591a\u8fbe247\u4e2a\u8282\u70b9\u7684\u7f51\u7edc\u62d3\u6251\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6b64\u5916\uff0cModbus\u534f\u8bae\u662f\u4e00\u79cd\u6a21\u5757\u5316\u901a\u4fe1\u534f\u8bae\uff0c\u4e13\u95e8\u7528\u4e8e\u63a7\u5236\u5668\u548c\u53ef\u63a7\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u3002\u5b83\u91c7\u7528\u4e3b\u4ece\u65b9\u5f0f\u901a\u4fe1\uff0c\u5373\u4e3b\u673a\u53d1\u8d77\u8bf7\u6c42\uff0c\u4ece\u673a\u5e94\u7b54\uff0c\u4e0d\u80fd\u540c\u6b65\u8fdb\u884c\u901a\u4fe1\u3002\u800cRS-485\u4ec5\u63d0\u4f9b\u4e86\u57fa\u672c\u7684\u7269\u7406\u5c42\u4f20\u8f93\uff0c\u9700\u8981\u989d\u5916\u7684\u534f\u8bae\u6765\u5b9e\u73b0\u9ad8\u7ea7\u529f\u80fd\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>485\u534f\u8bae\u548cModbus\u534f\u8bae\u867d\u7136\u5728\u67d0\u4e9b\u65b9\u9762\u6709\u5171\u540c\u4e4b\u5904\uff0c\u4f46\u5b83\u4eec\u5728\u7269\u7406\u5c42\u6807\u51c6\u3001\u4f20\u8f93\u6a21\u5f0f\u3001\u7f51\u7edc\u62d3\u6251\u548c\u652f\u6301\u7684\u529f\u80fd\u7b49\u65b9\u9762\u5b58\u5728\u660e\u663e\u7684\u5dee\u5f02\u3002<\/strong>485\u534f\u8bae\u66f4\u591a\u5730\u5173\u6ce8\u4e8e\u7269\u7406\u5c42\u7684\u4f20\u8f93\uff0c\u800cModbus\u534f\u8bae\u5219\u4fa7\u91cd\u4e8e\u5e94\u7528\u5c42\u7684\u6570\u636e\u4ea4\u6362\u548c\u901a\u4fe1\u89c4\u8303\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 485\u534f\u8bae\u548cModbus\u534f\u8bae\u5728\u6570\u636e\u4ea4\u6362\u683c\u5f0f\u548c\u5185\u5bb9\u65b9\u9762\u7684\u5177\u4f53\u5dee\u5f02<\/h2>\n\n\n\n<p>\u3000\u3000485\u534f\u8bae\u548cModbus\u534f\u8bae\u5728\u6570\u636e\u4ea4\u6362\u683c\u5f0f\u548c\u5185\u5bb9\u65b9\u9762\u5b58\u5728\u663e\u8457\u5dee\u5f02\uff0c\u5177\u4f53\u5982\u4e0b\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001.&nbsp;<strong>\u6570\u636e\u5e27\u7ed3\u6784<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000485\u534f\u8bae\u7684\u6570\u636e\u5e27\u7531\u8d77\u59cb\u4f4d\u3001\u5730\u5740\u4f4d\u3001\u529f\u80fd\u7801\u3001\u6570\u636e\u4f4d\u3001\u6821\u9a8c\u4f4d\u548c\u7ed3\u675f\u4f4d\u7ec4\u6210\u3002<\/p>\n\n\n\n<p>\u3000\u3000Modbus\u534f\u8bae\u7684\u6570\u636e\u5e27\u5305\u62ec\u8d77\u59cb\u7b26\u3001\u8bbe\u5907\u5730\u5740\u3001\u529f\u80fd\u4ee3\u7801\u3001\u6570\u636e\u3001\u6821\u9a8c\u548c\u7ed3\u675f\u7b26\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002.&nbsp;<strong>\u901a\u4fe1\u901f\u7387<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000485\u534f\u8bae\u652f\u6301\u591a\u79cd\u901a\u4fe1\u901f\u7387\uff0c\u6700\u9ad8\u53ef\u8fbe10Mbps\u3002<\/p>\n\n\n\n<p>\u3000\u3000Modbus\u534f\u8bae\u7684\u901a\u4fe1\u901f\u7387\u8f83\u4f4e\uff0c\u901a\u5e38\u57289600bps\u5230115200bps\u4e4b\u95f4\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30003.&nbsp;<strong>\u901a\u4fe1\u6a21\u5f0f<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000485\u534f\u8bae\u53ef\u4ee5\u540c\u65f6\u4f20\u8f93\u591a\u4e2a\u8bbe\u5907\u7684\u6570\u636e\uff0c\u652f\u6301\u591a\u70b9\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u3000\u3000Modbus\u534f\u8bae\u4e00\u6b21\u53ea\u80fd\u4f20\u8f93\u4e00\u4e2a\u8bbe\u5907\u7684\u6570\u636e\uff0c\u652f\u6301\u70b9\u5bf9\u70b9\u901a\u4fe1\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30004.&nbsp;<strong>\u5e94\u7528\u573a\u666f<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000485\u534f\u8bae\u57fa\u4e8eRS-485\u603b\u7ebf\u8bbe\u8ba1\uff0c\u9002\u7528\u4e8e\u591a\u8282\u70b9\u7f51\u7edc\u901a\u8baf\uff0c\u80fd\u591f\u5b9e\u73b0\u591a\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4ea4\u6362\u548c\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u3000\u3000Modbus\u534f\u8bae\u5e7f\u6cdb\u7528\u4e8e\u5de5\u4e1a\u7535\u5b50\u8bbe\u5907\u4e2d\u7684\u4e32\u884c\u901a\u4fe1\uff0c\u7279\u522b\u662f\u5728\u4e3b\u7ad9(\u4e3b\u673a)\u548c\u4ece\u7ad9\u4e4b\u95f4\u7684\u901a\u4fe1\u4e2d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30005.&nbsp;<strong>\u6570\u636e\u4f20\u8f93\u65b9\u5f0f<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000485\u534f\u8bae\u901a\u8fc7\u5dee\u5206\u4fe1\u53f7\u4f20\u8f93\uff0c\u53ef\u4ee5\u5b9e\u73b0\u591a\u8282\u70b9\u7f51\u7edc\u901a\u8baf\u3002<\/p>\n\n\n\n<p>\u3000\u3000Modbus\u534f\u8bae\u5219\u4e3b\u8981\u7528\u4e8e\u70b9\u5bf9\u70b9\u6216\u70b9\u5bf9\u591a\u70b9\u7684\u901a\u4fe1\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 Modbus\u534f\u8bae\u5982\u4f55\u5b9e\u73b0\u4e3b\u4ece\u901a\u4fe1\u65b9\u5f0f<\/h2>\n\n\n\n<p>\u3000\u3000Modbus\u534f\u8bae\u901a\u8fc7\u4e3b\u4ece(Master-Slave)\u6a21\u5f0f\u5b9e\u73b0\u901a\u4fe1\u3002\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u4e00\u4e2a\u8bbe\u5907\u5145\u5f53\u4e3b\u7ad9(Master)\uff0c\u800c\u5176\u4ed6\u8bbe\u5907\u5145\u5f53\u4ece\u7ad9(Slave)\u3002\u4e3b\u7ad9\u8d1f\u8d23\u53d1\u8d77\u8bf7\u6c42\uff0c\u4ece\u7ad9\u5219\u8d1f\u8d23\u54cd\u5e94\u8fd9\u4e9b\u8bf7\u6c42\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u4e3b\u8bbe\u5907(\u4e3b\u673a)\u4e3b\u52a8\u67e5\u8be2\u548c\u64cd\u4f5c\u4ece\u8bbe\u5907(\u4ece\u673a)\uff0c\u4ece\u8bbe\u5907\u4e0d\u4f1a\u4e3b\u52a8\u53d1\u9001\u6570\u636e\uff0c\u53ea\u6709\u5728\u63a5\u6536\u5230\u4e3b\u8bbe\u5907\u7684\u8bf7\u6c42\u540e\u624d\u4f1a\u8fdb\u884c\u54cd\u5e94\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u8fd9\u79cd\u4e3b\u4ece\u901a\u4fe1\u65b9\u5f0f\u5bf9\u7cfb\u7edf\u7a33\u5b9a\u6027\u6709\u663e\u8457\u5f71\u54cd\u3002\u9996\u5148\uff0c\u7531\u4e8e\u4e3b\u8bbe\u5907\u63a7\u5236\u6574\u4e2a\u901a\u4fe1\u8fc7\u7a0b\uff0c\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6570\u636e\u6d41\uff0c\u786e\u4fdd\u4fe1\u606f\u7684\u51c6\u786e\u6027\u548c\u53ca\u65f6\u6027\u3002\u5176\u6b21\uff0c\u4ece\u8bbe\u5907\u4e0d\u4f1a\u4e3b\u52a8\u53d1\u9001\u6570\u636e\uff0c\u8fd9\u51cf\u5c11\u4e86\u7f51\u7edc\u62e5\u585e\u7684\u53ef\u80fd\u6027\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u6b64\u5916\uff0c\u4e3b\u4ece\u6a21\u5f0f\u5141\u8bb8\u4e3b\u8bbe\u5907\u7075\u6d3b\u5730\u8bbf\u95ee\u591a\u4e2a\u4ece\u8bbe\u5907\uff0c\u9002\u5e94\u4e0d\u540c\u7684\u5de5\u4e1a\u81ea\u52a8\u5316\u9700\u6c42\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 485\u534f\u8bae\u548cModbus\u534f\u8bae\u7684\u6027\u80fd\u8868\u73b0<\/h2>\n\n\n\n<p>\u3000\u3000\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c485\u534f\u8bae\u548cModbus\u534f\u8bae\u7684\u6027\u80fd\u8868\u73b0(\u5982\u901f\u5ea6\u3001\u5ef6\u8fdf)\u5b58\u5728\u663e\u8457\u5dee\u5f02\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4ece\u4f20\u8f93\u901f\u5ea6\u6765\u770b\uff0cRS-485\u534f\u8bae\u652f\u6301\u8f83\u9ad8\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u3002\u4f8b\u5982\uff0c\u5728\u8f83\u77ed\u7684\u8ddd\u79bb(10\u7c73)\u4e0a\uff0cRS-485\u53ef\u4ee5\u8fbe\u523030-35 Mbps\u7684\u4f20\u8f93\u901f\u5ea6\uff0c\u800c\u5728\u957f\u8fbe1200\u7c73\u7684\u8ddd\u79bb\u4e0a\uff0c\u5176\u4f20\u8f93\u901f\u7387\u53ef\u4ee5\u8fbe\u5230100 Kbps \u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0cModbus\u534f\u8bae\u7684\u4f20\u8f93\u901f\u7387\u76f8\u5bf9\u8f83\u4f4e\uff0c\u7279\u522b\u662f\u5728\u4e32\u53e3\u901a\u4fe1\u6a21\u5f0f\u4e0b\uff0c\u901a\u5e38\u6700\u9ad8\u901f\u5ea6\u4e3a115200bps \u3002\u56e0\u6b64\uff0cRS-485\u5728\u9ad8\u901f\u6570\u636e\u4f20\u8f93\u65b9\u9762\u5177\u6709\u4f18\u52bf\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4ece\u5ef6\u8fdf\u89d2\u5ea6\u6765\u770b\uff0cRS-485\u534f\u8bae\u7531\u4e8e\u5176\u8f83\u9ad8\u7684\u4f20\u8f93\u901f\u7387\uff0c\u901a\u5e38\u4f1a\u6709\u66f4\u4f4e\u7684\u5ef6\u8fdf\u3002\u800cModbus\u534f\u8bae\u7531\u4e8e\u4f20\u8f93\u901f\u7387\u8f83\u4f4e\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u66f4\u9ad8\u7684\u5ef6\u8fdf 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class=\"wp-block-heading\">\u3000\u30001.&nbsp;<strong>\u7269\u7406\u5c42\u4e0e\u5e94\u7528\u5c42\u7684\u533a\u522b<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000RS485\u662f\u4e00\u79cd\u7269\u7406\u5c42\u6807\u51c6\uff0c\u4e3b\u8981\u7528\u4e8e\u8bbe\u5907\u95f4\u7684\u5dee\u5206\u4fe1\u53f7\u4f20\u8f93\uff0c\u5177\u6709\u4f20\u8f93\u8ddd\u79bb\u8fdc\u3001\u6297\u5e72\u6270\u80fd\u529b\u5f3a\u7684\u4f18\u70b9\u3002<\/p>\n\n\n\n<p>\u3000\u3000Modbus\u5219\u662f\u4e00\u79cd\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u5b9a\u4e49\u4e86\u6570\u636e\u4f20\u8f93\u7684\u5177\u4f53\u683c\u5f0f\u548c\u89c4\u5219\uff0c\u9002\u7528\u4e8e\u591a\u79cd\u7269\u7406\u4ecb\u8d28\u3002<\/p>\n\n\n\n<h3 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