{"id":8066,"date":"2023-08-03T22:08:38","date_gmt":"2023-08-03T14:08:38","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=8066"},"modified":"2024-06-16T15:41:26","modified_gmt":"2024-06-16T07:41:26","slug":"rjkzyjsmsb-3","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/8066.html","title":{"rendered":"RS485\u63a5\u53e3\u4e3b\u8981\u63a5\u54ea\u4e9b\u8bbe\u5907?"},"content":{"rendered":"\n

\u3000\u3000\u968f\u7740\u5de5\u4e1a\u81ea\u52a8\u5316\u6c34\u5e73\u7684\u4e0d\u65ad\u63d0\u9ad8\uff0c\u5404\u79cd\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002RS485\u63a5\u53e3\u4f5c\u4e3a\u4e00\u79cd\u5e38\u89c1\u7684\u5de5\u4e1a\u901a\u4fe1\u63a5\u53e3\uff0c\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u3002\u90a3\u4e48\uff0cRS485\u63a5\u53e3\u4e3b\u8981\u63a5\u4ec0\u4e48\u8bbe\u5907\u5462?\u672c\u6587\u5c06\u4e3a\u60a8\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n\n\n\n

\u3000\u30001. RS485\u63a5\u53e3\u7684\u6982\u8ff0<\/h2>\n\n\n\n

\u3000\u3000RS485\u63a5\u53e3\u662f\u4e00\u79cd\u4e32\u884c\u901a\u4fe1\u63a5\u53e3\uff0c\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u3002\u4e0eRS232\u63a5\u53e3\u76f8\u6bd4\uff0cRS485\u63a5\u53e3\u5177\u6709\u66f4\u957f\u7684\u901a\u4fe1\u8ddd\u79bb\u3001\u66f4\u9ad8\u7684\u901a\u4fe1\u901f\u7387\u548c\u66f4\u597d\u7684\u6297\u5e72\u6270\u80fd\u529b\uff0c\u56e0\u6b64\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5de5\u4e1a\u81ea\u52a8\u5316\u3001\u697c\u5b87\u81ea\u63a7\u7b49\u9886\u57df\u3002<\/p>\n\n\n\n

\u3000\u30002. RS485\u63a5\u53e3\u7684\u4e3b\u8981\u5e94\u7528\u8bbe\u5907<\/h2>\n\n\n\n

\u3000\u3000(1)PLC<\/h3>\n\n\n\n

\u3000\u3000PLC\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u5de5\u4e1a\u63a7\u5236\u8bbe\u5907\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u751f\u4ea7\u8fc7\u7a0b\u4e2d\u5404\u79cd\u53c2\u6570\u7684\u91c7\u96c6\u3001\u63a7\u5236\u548c\u76d1\u6d4b\u3002\u5728PLC\u7cfb\u7edf\u4e2d\uff0c\u5404\u79cd\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u9700\u8981\u901a\u8fc7RS485\u63a5\u53e3\u5b9e\u73b0\u3002<\/p>\n\n\n\n

\u3000\u3000(2)\u4eea\u5668\u4eea\u8868<\/h3>\n\n\n\n

\u3000\u3000\u5404\u79cd\u4eea\u5668\u4eea\u8868\u5728\u5de5\u4e1a\u751f\u4ea7\u548c\u79d1\u5b66\u7814\u7a76\u4e2d\u90fd\u6709\u5e7f\u6cdb\u5e94\u7528\u3002\u8fd9\u4e9b\u4eea\u5668\u4eea\u8868\u4e4b\u95f4\u7684\u901a\u4fe1\u4e5f\u9700\u8981\u901a\u8fc7RS485\u63a5\u53e3\u5b9e\u73b0\uff0c\u4ee5\u4fbf\u5b9e\u73b0\u6570\u636e\u7684\u91c7\u96c6\u548c\u5904\u7406\u3002<\/p>\n\n\n\n

\u3000\u3000(3)\u697c\u5b87\u81ea\u63a7\u7cfb\u7edf<\/h3>\n\n\n\n

\u3000\u3000\u697c\u5b87\u81ea\u63a7\u7cfb\u7edf\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u697c\u5b87\u5185\u5404\u79cd\u8bbe\u5907\u7684\u81ea\u52a8\u63a7\u5236\u548c\u7ba1\u7406\u3002\u5728\u697c\u5b87\u81ea\u63a7\u7cfb\u7edf\u4e2d\uff0c\u5404\u79cd\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u4e5f\u9700\u8981\u901a\u8fc7RS485\u63a5\u53e3\u5b9e\u73b0\u3002<\/p>\n\n\n\n

\u3000\u3000(4)\u5b89\u9632\u76d1\u63a7\u7cfb\u7edf<\/h3>\n\n\n\n

\u3000\u3000\u5b89\u9632\u76d1\u63a7\u7cfb\u7edf\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u5404\u79cd\u573a\u6240\u7684\u76d1\u63a7\u548c\u7ba1\u7406\u3002\u5728\u5b89\u9632\u76d1\u63a7\u7cfb\u7edf\u4e2d\uff0c\u5404\u79cd\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u4e5f\u9700\u8981\u901a\u8fc7RS485\u63a5\u53e3\u5b9e\u73b0\u3002<\/p>\n\n\n\n

\u3000\u30003. RS485\u63a5\u53e3\u7684\u4f18\u52bf<\/h2>\n\n\n\n

\u3000\u3000(1)\u957f\u8ddd\u79bb\u901a\u4fe1<\/h3>\n\n\n\n

\u3000\u3000RS485\u63a5\u53e3\u53ef\u4ee5\u5b9e\u73b0\u6700\u957f\u8fbe1200\u7c73\u7684\u901a\u4fe1\u8ddd\u79bb\uff0c\u6bd4RS232\u63a5\u53e3\u66f4\u52a0\u9002\u5408\u5927\u578b\u5de5\u5382\u548c\u5efa\u7b51\u7269\u7b49\u9700\u8981\u957f\u8ddd\u79bb\u901a\u4fe1\u7684\u573a\u5408\u3002<\/p>\n\n\n\n

\u3000\u3000(2)\u9ad8\u901f\u901a\u4fe1<\/h3>\n\n\n\n

\u3000\u3000RS485\u63a5\u53e3\u7684\u901a\u4fe1\u901f\u7387\u6700\u9ad8\u53ef\u8fbe10Mbps\uff0c\u6bd4RS232\u63a5\u53e3\u5feb\u4e86\u5f88\u591a\uff0c\u53ef\u4ee5\u6ee1\u8db3\u5de5\u4e1a\u81ea\u52a8\u5316\u7b49\u9886\u57df\u5bf9\u9ad8\u901f\u901a\u4fe1\u7684\u9700\u6c42\u3002<\/p>\n\n\n\n

\u3000\u3000(3)\u6297\u5e72\u6270\u80fd\u529b<\/h3>\n\n\n\n

\u3000\u3000RS485\u63a5\u53e3\u91c7\u7528\u5dee\u5206\u4fe1\u53f7\u4f20\u8f93\uff0c\u5177\u6709\u5f88\u5f3a\u7684\u6297\u5e72\u6270\u80fd\u529b\uff0c\u53ef\u4ee5\u5728\u7535\u78c1\u5e72\u6270\u548c\u566a\u58f0\u5e72\u6270\u7b49\u73af\u5883\u4e2d\u6b63\u5e38\u901a\u4fe1\u3002<\/p>\n\n\n\n

\u3000\u30004. RS485\u63a5\u53e3\u7684\u6ce8\u610f\u4e8b\u9879<\/h2>\n\n\n\n

\u3000\u3000(1)\u63a5\u7ebf\u65b9\u5f0f<\/h3>\n\n\n\n

\u3000\u3000RS485\u63a5\u53e3\u7684\u63a5\u7ebf\u65b9\u5f0f\u9700\u8981\u6ce8\u610f\uff0c\u4e00\u822c\u9700\u8981\u91c7\u7528\u53cc\u7ede\u7ebf\u8fdb\u884c\u8fde\u63a5\uff0c\u4ee5\u907f\u514d\u4fe1\u53f7\u5931\u771f\u548c\u5e72\u6270\u3002<\/p>\n\n\n\n

\u3000\u3000(2)\u4fe1\u53f7\u8c03\u5236\u65b9\u5f0f<\/h3>\n\n\n\n

\u3000\u3000RS485\u63a5\u53e3\u7684\u4fe1\u53f7\u8c03\u5236\u65b9\u5f0f\u9700\u8981\u4e0e\u63a5\u6536\u8bbe\u5907\u4fdd\u6301\u4e00\u81f4\uff0c\u5426\u5219\u4f1a\u51fa\u73b0\u901a\u4fe1\u5931\u8d25\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n

\u3000\u3000(3)\u5730\u5740\u8bbe\u7f6e<\/h3>\n\n\n\n

\u3000\u3000RS485\u63a5\u53e3\u5728\u591a\u8bbe\u5907\u901a\u4fe1\u65f6\u9700\u8981\u8bbe\u7f6e\u4e0d\u540c\u7684\u5730\u5740\uff0c\u4ee5\u4fbf\u63a5\u6536\u8bbe\u5907\u53ef\u4ee5\u6b63\u786e\u8bc6\u522b\u53d1\u9001\u8bbe\u5907\u3002<\/p>\n\n\n\n

\u3000\u3000\u7ed3\u8bba\uff1a<\/h2>\n\n\n\n

\u3000\u3000RS485\u63a5\u53e3\u4f5c\u4e3a\u4e00\u79cd\u5e38\u89c1\u7684\u5de5\u4e1a\u901a\u4fe1\u63a5\u53e3\uff0c\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\u3002\u5728PLC\u3001\u4eea\u5668\u4eea\u8868\u3001\u697c\u5b87\u81ea\u63a7\u7cfb\u7edf\u548c\u5b89\u9632\u76d1\u63a7\u7cfb\u7edf\u7b49\u9886\u57df\u90fd\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u3002RS485\u63a5\u53e3\u5177\u6709\u957f\u8ddd\u79bb\u901a\u4fe1\u3001\u9ad8\u901f\u901a\u4fe1\u548c\u6297\u5e72\u6270\u80fd\u529b\u7b49\u4f18\u52bf\uff0c\u4f46\u5728\u63a5\u7ebf\u65b9\u5f0f\u3001\u4fe1\u53f7\u8c03\u5236\u65b9\u5f0f\u548c\u5730\u5740\u8bbe\u7f6e\u7b49\u65b9\u9762\u9700\u8981\u6ce8\u610f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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