"# RS485\u63a7\u5236\u7ebf\u7684\u5e03\u7ebf\u5b89\u88c5\u4e0e\u6ce8\u610f\u4e8b\u9879\n\n> 2023-08-22 | 2026-07-01\n> https:\/\/www.modbus.cn\/en\/24493.html\n\n**Modbus \u534f\u8bae\u6807\u51c6**\n\n---\n\n\u505a\u5de5\u7a0b\u5f88\u591a\u65f6\u5019\u4f1a\u63d0\u5230RS485\u63a7\u5236\u7ebf\uff0c\u5b83\u5230\u5e95\u662f\u4ec0\u4e48\u5462\uff1f\u4eca\u5929\u6211\u804a\u804aRS485\u76f8\u5173\u7684\u5e94\u7528\uff0c\u6df1\u5165\u4e86\u89e3RS485\uff0c\u4f60\u4f1a\u53d1\u73b0\u91cc\u9762\u7684\u77e5\u8bc6\u786e\u5b9e\u6709\u5f88\u591a\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u9009\u62e9\u4e00\u4e9b\u5e73\u65f6\u5728\u5f31\u7535\u4e2d\u4f1a\u8003\u8651\u5230\u7684\u95ee\u9898\u4f9b\u5927\u5bb6\u4e86\u89e3\u3002\n\n\r\n\n\r\n\r\n\n\r\n\n**\u4e00\u3001\u4ec0\u4e48\u662fRS485\u603b\u7ebf**\n\n\r\n\n\r\n\r\n\n\r\n\n\u5de5\u4e1a\u73b0\u573a\u7ecf\u5e38\u8981\u91c7\u96c6\u591a\u70b9\u6570\u636e\uff0c\u6a21\u62df\u4fe1\u53f7\u6216\u5f00\u5173\u4fe1\u53f7\uff0c\u4e00\u822c\u7528\u5230RS485\u603b\u7ebf\uff0c**RS-485\u91c7\u7528\u534a\u53cc\u5de5\u5de5\u4f5c\u65b9\u5f0f\uff0c\u652f\u6301\u591a\u70b9\u6570\u636e\u901a\u4fe1\u3002**RS-485\u603b\u7ebf\u7f51\u7edc\u62d3\u6251\u4e00\u822c\u91c7\u7528\u7ec8\u7aef\u5339\u914d\u7684\u603b\u7ebf\u578b\u7ed3\u6784\u3002\u5373\u91c7\u7528\u4e00\u6761\u603b\u7ebf\u5c06\u5404\u4e2a\u8282\u70b9\u4e32\u63a5\u8d77\u6765\uff0c\u4e0d\u652f\u6301\u73af\u5f62\u6216\u661f\u578b\u7f51\u7edc\u3002\n\n\r\n\n\r\n\r\n\n\r\n\n**RS485\u65e0\u5177\u4f53\u7684\u7269\u7406\u5f62\u72b6\uff0c**\u6839\u636e\u5de5\u7a0b\u7684\u5b9e\u9645\u60c5\u51b5\u800c\u91c7\u7528\u7684\u63a5\u53e3\uff0cRS485\u91c7\u7528\u5dee\u5206\u4fe1\u53f7\u8d1f\u903b\u8f91\uff0c\uff0b2V\uff5e\uff0b6V\u8868\u793a\"0\"\uff0c- 6V\uff5e- 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u7684\u5f00\u5173\u7535\u6e90(\u7eb9\u6ce2\u5e72\u6270\u5c0f\u4e8e50mV)\u3002\n\n\r\n\n\r\n\r\n\n\r\n\n**7\u3001\u4ec0\u4e48\u60c5\u51b5\u4e0b\u5728485\u603b\u7ebf\u4e0a\u8981\u589e\u52a0\u7ec8\u7aef\u7535\u963b\uff1f**\n\n\r\n\n\u4e00\u822c\u60c5\u51b5\u4e0b\u4e0d\u9700\u8981\u589e\u52a0\u7ec8\u7aef\u7535\u963b\uff0c\u53ea\u6709\u5728485\u901a\u4fe1\u8ddd\u79bb\u8d85\u8fc7300\u7c73\u7684\u60c5\u51b5\u4e0b\uff0c\u8981\u5728485\u901a\u8baf\u7684\u5f00\u59cb\u7aef\u548c\u7ed3\u675f\u7aef\u589e\u52a0\u7ec8\u7aef\u7535\u963b\u3002\u5c24\u5176\u662f485\u603b\u7ebf\u4e0a\u8bbe\u5907\u6570\u91cf\u8f83\u5c11\u65f6\u3002\u5f53\u8bbe\u5907\u6570\u91cf\u8f83\u591a\u65f6\uff08\u5982\u8d85\u8fc722\u53f0\uff09\u3002\u4e00\u822c\u4e0d\u9700\u589e\u52a0\u7ec8\u7aef\u7535\u963b\uff0c\u56e0\u4e3a\u7ec8\u7aef\u7535\u963b\u4f1a\u964d\u4f4e485\u603b\u7ebf\u7684\u8d1f\u8f7d\u80fd\u529b\uff0c\u7403\u673a\u7ec8\u7aef120\u03a9\u5339\u914d\u7535\u963b\u7684\u8fde\u63a5\u65b9\u5f0f\u5982\u4e0b\uff1a\u7403\u673a\u7ec8\u7aef120\u03a9\u5339\u914d\u7535\u963b\u53ef\u901a\u8fc7\u5728\u7403\u673a\u5e95\u76d8\u4e0a\u7684\u62e8\u7801\u5f00\u5173\u62e8\u7801\u6765\u8fde\u63a5\u3002\u7403\u673a\u51fa\u5382\u65f6\uff0c120\u03a9\u5339\u914d\u7535\u963b\u9ed8\u8ba4\u4e3a\u672a\u63a5\u5165\uff0c\u53ef\u901a\u8fc7\u628a\u62e8\u7801\u5f00\u5173\u7684\u7b2c10\u4f4d\u62e8\u5230ON\uff0c\u628a120\u03a9\u5339\u914d\u7535\u963b\u63a5\u5165\u7ebf\u8def\u3002\u53cd\u4e4b\uff0c\u5982\u679c\u4e0d\u63a5\u5165120\u03a9\u5339\u914d\u7535\u963b\uff0c\u5219\u628a\u7b2c10\u4f4d\u62e8\u5230OFF\u5373\u53ef\u3002\n\n\r\n\n\r\n\r\n\n\r\n\n**8\u3001\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u95ee\u9898**\n\n\r\n\n\u5b9e\u9645\u65bd\u5de5\u4f7f\u7528\u4e2d\u7528\u6237\u5e38\u91c7\u7528\u661f\u5f62\u8fde\u63a5\u65b9\u5f0f\uff0c\u6b64\u65f6\u7ec8\u7aef\u7535\u963b\u5fc5\u987b\u8fde\u63a5\u5728\u7ebf\u8def\u8ddd\u79bb\u6700\u8fdc\u7684\u4e24\u4e2a\u8bbe\u5907\u4e0a\uff08\u5982\u4e0b\u56fe\uff0c1\uff03\u4e0e15\uff03\u8bbe\u5907\uff09\uff0c\u4f46\u662f\u7531\u4e8e\u8be5\u8fde\u63a5\u65b9\u5f0f\u4e0d\u7b26\u5408RS485\u5de5\u4e1a\u6807\u51c6\u7684\u4f7f\u7528\u8981\u6c42\uff0c\u56e0\u6b64\u5728\u5404\u8bbe\u5907\u7ebf\u8def\u8ddd\u79bb\u8f83\u8fdc\u65f6\uff0c\u5bb9\u6613\u4ea7\u751f\u4fe1\u53f7\u53cd\u5c04\u3001\u6297\u5e72\u6270\u80fd\u529b\u4e0b\u964d\u7b49\u95ee\u9898\uff0c\u5bfc\u81f4\u63a7\u5236\u4fe1\u53f7\u7684\u53ef\u9760\u6027\u4e0b\u964d\u3002\u6b64\u65f6\uff0c\u51fa\u73b0\u7684\u73b0\u8c61\u4e3a\u7403\u673a\u5b8c\u5168\u4e0d\u53d7\u63a7\uff0c\u6216\u81ea\u884c\u8fd0\u8f6c\u65e0\u6cd5\u505c\u6b62\u7b49\u3002\n\n\r\n\n\r\n\n\u5bf9\u4e8e\u8fd9\u79cd\u60c5\u51b5\uff0c\u5efa\u8bae\u91c7\u7528\u589e\u52a0\u4e00\u4e2aRS485\u5206\u914d\u5668\u3002\u8be5\u4ea7\u54c1\u53ef\u4ee5\u6709\u6548\u5730\u5c06\u661f\u5f62\u8fde\u63a5\u8f6c\u6362\u4e3a\u7b26\u5408RS485\u5de5\u4e1a\u6807\u51c6\u6240\u89c4\u5b9a\u7684\u8fde\u63a5\u65b9\u5f0f\uff0c\u4ece\u800c\u907f\u514d\u4ea7\u751f\u95ee\u9898\uff0c\u63d0\u9ad8\u901a\u4fe1\u53ef\u9760\u6027\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002\r\n\r\n\n\r\n\n\r\n\n\r\n\r\n\n\r\n\n**9\u3001\u65e0\u4e2d\u7ee7\u6700\u5927\u4f20\u8f93\u8ddd\u79bb\u63a8\u8350\u7528\u7ebf**\n\n\r\n\n\uff081\uff09\u666e\u901a\u53cc\u7ede\u5c4f\u853d\u578b\u7535\u7f06 STP-120\u03a9\uff08for RS485 & CAN\uff09 one pair 20 AWG \uff0c\u7535\u7f06\u5916\u5f847.7mm\u5de6\u53f3\u3002\u9002\u7528\u4e8e\u5ba4\u5185\u3001\u7ba1\u9053\u53ca\u4e00\u822c\u5de5\u4e1a\u73af\u5883\u3002\u4f7f\u7528\u65f6\uff0c\u5c4f\u853d\u5c42\u4e00\u7aef\u63a5\u5730\uff01\n\n\r\n\n(2) \u666e\u901a\u53cc\u7ede\u5c4f\u853d\u578b\u7535\u7f06 STP-120\u03a9\uff08for RS485 & CAN\uff09 one pair 18 AWG \uff0c\u7535\u7f06\u5916\u5f848.2mm\u5de6\u53f3\u3002\u9002\u7528\u4e8e\u5ba4\u5185\u3001\u7ba1\u9053\u53ca\u4e00\u822c\u5de5\u4e1a\u73af\u5883\u3002\u4f7f\u7528\u65f6\uff0c\u5c4f\u853d\u5c42\u4e00\u7aef\u63a5\u5730\uff01\n\n\r\n\n(3) \u94e0\u88c5\u53cc\u7ede\u5c4f\u853d\u578b\u7535\u7f06 ASTP-120\u03a9\uff08for RS485 & CAN\uff09 one pair 18 AWG \uff0c\u7535\u7f06\u5916\u5f8412.3mm\u5de6\u53f3\u3002\u53ef\u7528\u4e8e\u5e72\u6270\u4e25\u91cd\u3001\u9f20\u5bb3\u9891\u7e41\u4ee5\u53ca\u6709\u9632\u96f7\u3001\u9632\u7206\u8981\u6c42\u7684\u573a\u6240\u3002\u4f7f\u7528\u65f6\uff0c\u5efa\u8bae\u94e0\u88c5\u5c42\u4e24\u7aef\u63a5\u5730\uff0c\u6700\u5185\u5c42\u5c4f\u853d\u4e00\u7aef\u63a5\u5730\n\n\r\n\n\r\n\r\n\n\r\n\n**\u56db\u3001RS485\u5e38\u89c1\u7684\u6545\u969c\u4e0e\u89e3\u51b3\u65b9\u6cd5**\n\n\r\n\n\r\n\r\n\n\r\n\n**\u4e00\u3001\u5982\u4f55\u9884\u9632\u6545\u969c\u7684\u53d1\u751f\u5462\uff1f**\n\n\r\n\n\r\n\r\n\n\r\n\n\u4e3a\u51cf\u5c11\u901a\u4fe1\u6545\u969c\u63d0\u51fa\u4e0b\u9762\u51e0\u6761\u5efa\u8bae\u3002\r\n\r\n\n\r\n\n1\u3001\u5efa\u8bae\u7528\u6237\u4f7f\u7528\u548c\u8d2d\u4e70\u5382\u5bb6\u63d0\u4f9b\u7684485\u8f6c\u6362\u5668\u6216\u8005\u5382\u5bb6\u6307\u5b9a\u63a8\u8350\u54c1\u724c\u7684485\u8f6c\u6362\u5668\u3002\n\n\r\n\n2\u3001\u5382\u5bb6\u4f1a\u5bf9\u4e0e\u5176\u914d\u5957\u7684485\u8f6c\u6362\u5668\u505a\u5927\u91cf\u7684\u6d4b\u8bd5\u5de5\u4f5c\uff0c\u5e76\u4e14\u4f1a\u8981\u6c42485\u8f6c\u6362\u5668\u751f\u4ea7\u5382\u5bb6\u6309\u7167\u5176\u56fa\u5b9a\u7684\u6027\u80fd\u53c2\u6570\u8fdb\u884c\u751f\u4ea7\u548c\u54c1\u8d28\u68c0\u6d4b\uff0c\u6240\u4ee5\u5b83\u4e0e\u95e8\u7981\u8bbe\u5907\u5177\u5907\u8f83\u597d\u7684\u517c\u5bb9\u6027\u3002\u5343\u4e07\u4e0d\u8981\u8d2a\u56fe\u4fbf\u5b9c\u8d2d\u4e70\u6742\u724c\u5382\u5bb6\u7684485\u8f6c\u6362\u5668\u3002\n\n\r\n\n\r\n\n3\u3001\u4e25\u683c\u6309\u7167485\u603b\u7ebf\u7684\u65bd\u5de5\u89c4\u8303\u8fdb\u884c\u65bd\u5de5\uff0c\u675c\u7edd\u4efb\u4f55\u4fa5\u5e78\u5fc3\u7406\u3002\r\n\r\n\n\r\n\n4\u3001\u5bf9\u7ebf\u8def\u8f83\u957f\u3001\u8d1f\u8f7d\u8f83\u591a\u7684485\u603b\u7ebf\u5de5\u7a0b\u91c7\u7528\u79d1\u5b66\u7684\u3001\u6709\u9884\u7559\u7684\u89e3\u51b3\u65b9\u6848\u3002\n\n\r\n\n5\u3001\u5982\u679c\u901a\u8baf\u8ddd\u79bb\u8fc7\u957f\uff0c 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2026\u5e74\u73b0\u573a\u7ecf\u9a8c\u8865\u5145\uff1a\u5927\u9879\u76ee\u5e03\u7ebf\u6392\u5751\u6307\u5357\n\n\u5728\u8fd1\u767e\u4e2a\u5de5\u4e1a\u73b0\u573a\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u603b\u7ed3\u4e86\u4ee5\u4e0b\u9ad8\u9891\u8e29\u5751\u70b9\u548c\u6700\u4f73\u5b9e\u8df5\uff1a\n\n- **\u5f3a\u5f31\u7535\u5206\u79bb\u8ddd\u79bb\u81f3\u5c1130cm**\uff1aRS485\u4fe1\u53f7\u7ebf\u4e0e\u52a8\u529b\u7535\u7f06\uff08380V\/220V\uff09\u5e73\u884c\u8d70\u7ebf\u65f6\uff0c\u95f4\u9694\u4e0d\u5e94\u5c11\u4e8e30cm\uff0c\u4ea4\u53c9\u65f6\u5e94\u5782\u76f4\u4ea4\u53c9\u3002\u8ddd\u79bb\u4e0d\u591f\u65f6\u52a1\u5fc5\u4f7f\u7528\u53cc\u5c4f\u853d\u7535\u7f06\uff08\u94dd\u7b94+\u7f16\u7ec7\u7f51\u53cc\u5c42\u5c4f\u853d\uff09\uff0c\u4e14\u5c4f\u853d\u5c42\u5355\u7aef\u63a5\u5730\u3002\n- 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**\u9884\u7559\u8c03\u8bd5\u63a5\u53e3**\uff1a\u5efa\u8bae\u5728\u603b\u7ebf\u7684\u4e24\u7aef\u548c\u4e2d\u70b9\u5404\u9884\u7559\u4e00\u4e2a\u8c03\u8bd5\u63a5\u7ebf\u53e3\uff0c\u65b9\u4fbf\u540e\u671f\u7528Modbus\u8c03\u8bd5\u5de5\u5177\u6392\u67e5\u95ee\u9898\u3002\n\nmodbus.cn\u63d0\u4f9b\u5de5\u4e1a\u7ea7RS485\u9694\u79bb\u4e2d\u7ee7\u5668\u3001\u96c6\u7ebf\u5668\u53ca\u5404\u7c7b\u7f51\u5173\u8bbe\u5907\uff0c\u6b22\u8fce\u67e5\u9605\u4ea7\u54c1\u4e2d\u5fc3\u83b7\u53d6\u8be6\u7ec6\u53c2\u6570\u3002\n\n---\n*modbus.cn*\n"