{"id":78128,"date":"2024-01-15T09:01:04","date_gmt":"2024-01-15T01:01:04","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=78128"},"modified":"2024-01-15T09:01:04","modified_gmt":"2024-01-15T01:01:04","slug":"rrhrdqb","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/78128.html","title":{"rendered":"RS232\u3001RS422\u548cRS485\u7684\u533a\u522b"},"content":{"rendered":"
RS232\u3001RS422\u548cRS485\u662f\u5e38\u89c1\u7684\u4e32\u884c\u901a\u4fe1\u6807\u51c6\uff0c\u5b83\u4eec\u5728\u5de5\u4e1a\u63a7\u5236\u3001\u901a\u4fe1\u9886\u57df\u7b49\u90fd\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u4eca\u5929\u6211\u4eec\u5c06\u4ecb\u7ecd\u5b83\u4eec\u4e4b\u95f4\u7684\u533a\u522b\u3002<\/p>\n
RS232\u548cRS422\u662f\u4e24\u79cd\u4e0d\u540c\u7684\u4e32\u884c\u901a\u4fe1\u6807\u51c6\uff0c\u5b83\u4eec\u5728\u6570\u636e\u4f20\u8f93\u3001\u4f20\u8f93\u8ddd\u79bb\u3001\u63a5\u7ebf\u65b9\u5f0f\u7b49\u65b9\u9762\u6709\u6240\u4e0d\u540c\u3002<\/p>\n
RS232\u91c7\u7528\u8d1f\u7535\u5e73\u8868\u793a\u903b\u8f91\u201c1\u201d\u548c\u6b63\u7535\u5e73\u8868\u793a\u903b\u8f91\u201c0\u201d\uff0c\u901a\u5e38\u4e3a-3V\u81f3-15V\u8868\u793a\u903b\u8f91\u201c1\u201d\uff0c+3V\u81f3+15V\u8868\u793a\u903b\u8f91\u201c0\u201d\u3002\u800cRS422\u4f7f\u7528\u4e0d\u5e73\u8861\u4fe1\u53f7\u4f20\u8f93\uff0c\u91c7\u7528\u4e24\u6839\u4fe1\u53f7\u7ebf\uff08A\u548cB\uff09\u76f8\u5bf9\u5730\u53cd\u5411\u4f20\u8f93\u5dee\u5206\u4fe1\u53f7\uff0c\u56e0\u6b64\u53ef\u5b9e\u73b0\u66f4\u8fdc\u7684\u4f20\u8f93\u8ddd\u79bb\uff0c\u5178\u578b\u5de5\u4f5c\u7535\u538b\u4e3a\u00b12V\u3002<\/p>\n
RS232\u901a\u5e38\u53ef\u4f20\u8f93\u8ddd\u79bb\u4e3a15\u7c73\u5de6\u53f3\uff0c\u800cRS422\u53ef\u8986\u76d6\u66f4\u8fdc\u7684\u8ddd\u79bb\uff0c\u5e38\u89c4\u53ef\u8fbe1200\u7c73\uff0c\u56e0\u6b64\u5728\u9700\u8981\u8fdc\u8ddd\u79bb\u901a\u4fe1\u7684\u573a\u5408\u4f7f\u7528RS422\u66f4\u4e3a\u9002\u5408\u3002<\/p>\n
RS422\u548cRS485\u90fd\u662f\u5dee\u5206\u4f20\u8f93\u7684\u4e32\u884c\u901a\u4fe1\u6807\u51c6\uff0c\u4f46\u5728\u4fe1\u53f7\u7ebf\u6570\u91cf\u3001\u4f20\u8f93\u8ddd\u79bb\u548c\u7f51\u7edc\u7ed3\u6784\u7b49\u65b9\u9762\u6709\u6240\u4e0d\u540c\u3002<\/p>\n
RS422\u4f7f\u75284\u6839\u4fe1\u53f7\u7ebf\u8fdb\u884c\u5168\u53cc\u5de5<\/a>\u901a\u4fe1\uff08A+\u3001A-\u3001B+\u3001B-\uff09\uff0c\u53ef\u4ee5\u5b9e\u73b0\u53d1\u9001\u548c\u63a5\u6536\u4fe1\u53f7\u7684\u72ec\u7acb\u7ebf\u8def\uff0c\u800cRS485\u4f7f\u7528\u534a\u53cc\u5de5<\/a>\u901a\u4fe1\u6a21\u5f0f\uff0c\u53ea\u9700\u89812\u6839\u7ebf\u5b9e\u73b0\u53cc\u5411\u901a\u4fe1\u3002<\/p>\n \u7f51\u7edc\u7ed3\u6784<\/h3>\n