{"id":480,"date":"2025-05-31T02:01:49","date_gmt":"2025-05-30T18:01:49","guid":{"rendered":"https:\/\/cennum.top\/?p=480"},"modified":"2025-05-31T02:11:31","modified_gmt":"2025-05-30T18:11:31","slug":"%e5%9f%ba%e4%ba%8ers485%e7%9a%84modbus-rtu-%e5%8d%8f%e8%ae%ae%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/cennum.top\/index.php\/2025\/05\/31\/%e5%9f%ba%e4%ba%8ers485%e7%9a%84modbus-rtu-%e5%8d%8f%e8%ae%ae%e8%af%a6%e8%a7%a3\/","title":{"rendered":"\u57fa\u4e8eRS485\u7684Modbus RTU \u534f\u8bae\u8be6\u89e3"},"content":{"rendered":"\n<p><strong>Modbus RTU\uff08Remote Terminal Unit\uff09<\/strong> \u662f\u4e00\u79cd <strong>\u4e32\u884c\u901a\u4fe1\u534f\u8bae<\/strong>\uff0c\u8fd0\u884c\u5728 RS-485\u3001RS-232 \u7b49\u7269\u7406\u5c42\u4e4b\u4e0a\uff0c\u7528\u4e8e\u5b9e\u73b0 <strong>\u4e3b\u4ece\u901a\u4fe1<\/strong>\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7531 Modicon \u516c\u53f8\u4e8e 1979 \u5e74\u5236\u5b9a<\/li>\n\n\n\n<li>\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e PLC\u3001\u5de5\u4e1a\u63a7\u5236\u7cfb\u7edf\u3001\u8fdc\u7a0bI\/O\u6a21\u5757<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">1.\u901a\u4fe1\u67b6\u6784\uff1a\u4e3b\u4ece\u5f0f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e3b\u7ad9\uff08PLC \u6216\u4e0a\u4f4d\u673a\uff09\u53d1\u51fa\u8bf7\u6c42<\/li>\n\n\n\n<li>\u4ece\u7ad9\uff08\u63a5\u53e3\u6a21\u5757\uff09\u6309\u5730\u5740\u54cd\u5e94<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.\u62a5\u6587\u7ed3\u6784\uff08\u6807\u51c6 RTU \u5e27\uff09<\/h3>\n\n\n\n<p>[\u8d77\u59cb\u9759\u9ed8] [\u4ece\u7ad9\u5730\u5740] [\u529f\u80fd\u7801] [\u6570\u636e] [CRC\u6821\u9a8c] [\u7ed3\u5c3e\u9759\u9ed8]<\/p>\n\n\n\n<p>\u5176\u4e2d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>[\u8d77\u59cb\u9759\u9ed8]<\/strong> \u65f6\u95f4\u957f\u5ea6\u22653.5\u4e2a\u5b57\u7b26\u65f6\u95f4\uff0c\u8868\u793a\u4e00\u6b21\u4f20\u8f93\u5f00\u59cb<\/li>\n\n\n\n<li> <strong>[\u4ece\u7ad9\u5730\u5740]<\/strong> \u957f\u5ea61\u5b57\u8282\uff088bit\uff09\uff0c\u8868\u793a\u76ee\u6807\u8bbe\u5907\u5730\u5740\uff081~247\uff09<\/li>\n\n\n\n<li> <strong>[\u529f\u80fd\u7801]<\/strong> \u957f\u5ea61\u5b57\u8282\uff0c\u8868\u793a\u64cd\u4f5c\u7c7b\u578b\uff0c\u5982\u8bfb\u5199\u5bc4\u5b58\u5668<\/li>\n\n\n\n<li> <strong>[\u6570\u636e] <\/strong>\u957f\u5ea6N\u5b57\u8282\uff08\u7531\u8981\u8bfb\u6216\u5199\u7684\u4f4d\u51b3\u5b9a\uff09\uff0c\u8868\u793a\u64cd\u4f5c\u53c2\u6570\uff0c\u5982\u5bc4\u5b58\u5668\u5730\u5740\u3001\u6570\u91cf\u7b49<\/li>\n\n\n\n<li> <strong>[CRC\u6821\u9a8c]<\/strong> \u957f\u5ea62 \u5b57\u8282\uff0816bit\uff09\uff0c\u5e27\u5c3e16\u4f4d CRC \u68c0\u67e5\u7801<\/li>\n\n\n\n<li><strong> [\u7ed3\u5c3e\u9759\u9ed8] <\/strong>\u65f6\u95f4\u957f\u5ea6\u22653.5\u4e2a\u5b57\u7b26\u65f6\u95f4\uff0c\u8868\u793a\u4e00\u6b21\u4f20\u8f93\u7ed3\u675f<\/li>\n<\/ul>\n\n\n\n<p>\u6807\u51c6 RTU \u5e27\u6ca1\u6709\u5f00\u59cb\u5e27\u548c\u7ed3\u675f\u5e27\uff0c\u800c\u662f\u4ee5<strong>\u65f6\u95f4<\/strong>\u4f5c\u4e3a<strong>\u754c\u5b9a<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.\u5e38\u7528\u529f\u80fd\u7801<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"729\" height=\"816\" src=\"https:\/\/cennum.top\/wp-content\/uploads\/2025\/05\/image-3.png\" alt=\"\" class=\"wp-image-481\" style=\"width:540px;height:auto\" srcset=\"https:\/\/cennum.top\/wp-content\/uploads\/2025\/05\/image-3.png 729w, https:\/\/cennum.top\/wp-content\/uploads\/2025\/05\/image-3-268x300.png 268w\" sizes=\"auto, (max-width: 729px) 100vw, 729px\" \/><\/figure>\n\n\n\n<p>\u6700\u5e38\u7528\u7684\u670901\uff08\u8bfb\u4e00\u4e2a\/\u591a\u4e2a\u4f4d\uff09\uff0c05\uff08\u5199\u4e00\u4e2a\u4f4d\uff09\uff0c15\uff08\u5199\u591a\u4e2a\u4f4d\uff0903\uff08\u8bfb\u4e00\u4e2a\/\u591a\u4e2a\u5bc4\u5b58\u5668\uff09\uff0c06\uff08\u5199\u4e00\u4e2a\u5bc4\u5b58\u5668\uff09\uff0c16\uff08\u5199\u591a\u4e2a\u5bc4\u5b58\u5668\uff09<\/p>\n\n\n\n<p>\u8be6\u7ec6\u529f\u80fd\u7801\u89c1Modbus RTU \u534f\u8bae\u4ea7\u54c1\u7684\u7528\u6237\u624b\u518c<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.\u5176\u4ed6<\/h3>\n\n\n\n<p>\u5b66\u4e60Modbus RTU \u534f\u8bae\u53ef\u4ee5\u4f7f\u7528<strong>Modbus poll<\/strong>\uff08Modbus \u4e3b\u673a\u8bbe\u5907\u6a21\u62df\u8f6f\u4ef6\uff09\u548c<strong>Modbus slave<\/strong>\uff08Modbus 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&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[],"class_list":["post-480","post","type-post","status-publish","format-standard","hentry","category-qrs"],"_links":{"self":[{"href":"https:\/\/cennum.top\/index.php\/wp-json\/wp\/v2\/posts\/480","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cennum.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cennum.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cennum.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cennum.top\/index.php\/wp-json\/wp\/v2\/comments?post=480"}],"version-history":[{"count":6,"href":"https:\/\/cennum.top\/index.php\/wp-json\/wp\/v2\/posts\/480\/revisions"}],"predecessor-version":[{"id":489,"href":"https:\/\/cennum.top\/index.php\/wp-json\/wp\/v2\/posts\/480\/revisions\/489"}],"wp:attachment":[{"href":"https:\/\/cennum.top\/index.php\/wp-json\/wp\/v2\/media?parent=480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cennum.top\/index.php\/wp-json\/wp\/v2\/categories?post=480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cennum.top\/index.php\/wp-json\/wp\/v2\/tags?post=480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}