{"id":245,"date":"2025-11-27T11:38:43","date_gmt":"2025-11-27T03:38:43","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=245"},"modified":"2025-11-27T11:38:43","modified_gmt":"2025-11-27T03:38:43","slug":"%e5%9f%ba%e7%a1%80-db9%e4%b9%9d%e5%ad%94%e6%af%8d%e5%a4%b4%e3%80%81%e4%b9%9d%e9%92%88%e5%85%ac%e5%a4%b4-%ef%bc%88rs232%ef%bc%89%e6%8e%a5%e5%8f%a3%e5%ae%9a%e4%b9%89","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2025\/11\/27\/%e5%9f%ba%e7%a1%80-db9%e4%b9%9d%e5%ad%94%e6%af%8d%e5%a4%b4%e3%80%81%e4%b9%9d%e9%92%88%e5%85%ac%e5%a4%b4-%ef%bc%88rs232%ef%bc%89%e6%8e%a5%e5%8f%a3%e5%ae%9a%e4%b9%89\/","title":{"rendered":"\u57fa\u7840\u2014\u2014DB9\u4e5d\u5b54\u6bcd\u5934\u3001\u4e5d\u9488\u516c\u5934 \uff08RS232\uff09\u63a5\u53e3\u5b9a\u4e49"},"content":{"rendered":"\n<p>\u4e0b\u9762\u7ed9\u4f60\u6574\u7406\u4e00\u4efd <strong>RS-232\uff08DB9\uff09\u63a5\u53e3\u57fa\u7840\u5b9a\u4e49<\/strong>\uff0c\u6db5\u76d6\u4e5d\u9488\u516c\u5934\/\u6bcd\u5934\u7684\u9488\u811a\u5b9a\u4e49\u548c\u5e38\u7528\u4fe1\u53f7\u8bf4\u660e\uff0c\u975e\u5e38\u9002\u5408\u786c\u4ef6\u3001\u901a\u4fe1\u6216\u4e32\u53e3\u8c03\u8bd5\u5165\u95e8\u4f7f\u7528\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udc27 RS-232 DB9 \u63a5\u53e3\u57fa\u7840<\/h1>\n\n\n\n<p>RS-232 \u662f\u6700\u7ecf\u5178\u7684\u4e32\u53e3\u901a\u4fe1\u6807\u51c6\uff0c\u5e7f\u6cdb\u7528\u4e8e PC\u3001\u5d4c\u5165\u5f0f\u8bbe\u5907\u3001\u4eea\u5668\u4eea\u8868\u7b49\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DB9\uff1a9 \u9488 D-sub \u63a5\u53e3<\/li>\n\n\n\n<li>\u5206 <strong>\u516c\u5934\uff08Male, 9 \u9488\u51f8\u9488\uff09<\/strong> \u548c <strong>\u6bcd\u5934\uff08Female, 9 \u5b54\uff09<\/strong><\/li>\n\n\n\n<li>\u5e38\u7528\u4e8e <strong>DTE \u2194 DCE<\/strong> \u901a\u4fe1\uff08\u5982 PC \u2194 \u8c03\u5236\u89e3\u8c03\u5668\uff09<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">1\ufe0f\u20e3 DB9\u9488\u811a\u56fe\u793a<\/h1>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n      DB9 \u6bcd\u5934\uff089\u5b54\uff09 \u6b63\u89c6\u56fe\n     \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n  5  \u2502 o o o o o \u2502 1\n     \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n<\/pre><\/div>\n\n\n<p>\u9488\u811a\u7f16\u53f7\u89c4\u5219\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n 5 4 3 2 1\n 9 8 7 6\n\n<\/pre><\/div>\n\n\n<p>\u8be6\u7ec6\u5206\u5e03\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u9488\u53f7<\/th><th>\u4fe1\u53f7\u540d<\/th><th>\u7c7b\u578b<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>DCD (Data Carrier Detect)<\/td><td>\u8f93\u5165<\/td><td>\u8c03\u5236\u89e3\u8c03\u5668\u8f7d\u6ce2\u68c0\u6d4b<\/td><\/tr><tr><td>2<\/td><td>RXD (Receive Data)<\/td><td>\u8f93\u5165<\/td><td>\u63a5\u6536\u6570\u636e<\/td><\/tr><tr><td>3<\/td><td>TXD (Transmit Data)<\/td><td>\u8f93\u51fa<\/td><td>\u53d1\u9001\u6570\u636e<\/td><\/tr><tr><td>4<\/td><td>DTR (Data Terminal Ready)<\/td><td>\u8f93\u51fa<\/td><td>\u7ec8\u7aef\u51c6\u5907\u597d<\/td><\/tr><tr><td>5<\/td><td>GND (Signal Ground)<\/td><td>\u5730\u7ebf<\/td><td>\u516c\u5171\u53c2\u8003\u5730<\/td><\/tr><tr><td>6<\/td><td>DSR (Data Set Ready)<\/td><td>\u8f93\u5165<\/td><td>\u8c03\u5236\u89e3\u8c03\u5668\u51c6\u5907\u597d<\/td><\/tr><tr><td>7<\/td><td>RTS (Request To Send)<\/td><td>\u8f93\u51fa<\/td><td>\u8bf7\u6c42\u53d1\u9001\u4fe1\u53f7<\/td><\/tr><tr><td>8<\/td><td>CTS (Clear To Send)<\/td><td>\u8f93\u5165<\/td><td>\u6e05\u9664\u53d1\u9001\u4fe1\u53f7<\/td><\/tr><tr><td>9<\/td><td>RI (Ring Indicator)<\/td><td>\u8f93\u5165<\/td><td>\u6765\u7535\u6307\u793a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">2\ufe0f\u20e3 \u516c\u6bcd\u5934\u533a\u522b<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7c7b\u578b<\/th><th>\u5916\u89c2<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td>\u6bcd\u5934<\/td><td>9 \u4e2a\u5b54<\/td><td>\u901a\u5e38\u5728\u8bbe\u5907\u7aef<\/td><\/tr><tr><td>\u516c\u5934<\/td><td>9 \u6839\u9488<\/td><td>\u901a\u5e38\u5728\u7535\u7f06\u7aef<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u8fde\u63a5\u89c4\u5219<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6bcd\u5934 \u2194 \u516c\u5934 \u5bf9\u63a5<\/li>\n\n\n\n<li>DTE \u2194 DCE \u6b63\u786e\u8fde\u63a5\u624d\u80fd\u901a\u4fe1<\/li>\n\n\n\n<li>\u76f4\u8fde\u7ebf\u6216\u4ea4\u53c9\u7ebf\uff08Null Modem\uff09\u53d6\u51b3\u4e8e\u8bbe\u5907\u89d2\u8272<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">3\ufe0f\u20e3 \u4fe1\u53f7\u5206\u7c7b<\/h1>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6570\u636e\u7ebf\uff08Data\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>TXD\uff1a\u53d1\u9001\u6570\u636e<\/li>\n\n\n\n<li>RXD\uff1a\u63a5\u6536\u6570\u636e<\/li>\n<\/ul>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u63a7\u5236\u7ebf\uff08Control\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RTS \/ CTS\uff1a\u786c\u4ef6\u6d41\u63a7<\/li>\n\n\n\n<li>DTR \/ DSR\uff1a\u7ec8\u7aef\/\u8c03\u5236\u89e3\u8c03\u5668\u51c6\u5907\u72b6\u6001<\/li>\n\n\n\n<li>DCD\uff1a\u8f7d\u6ce2\u68c0\u6d4b<\/li>\n\n\n\n<li>RI\uff1a\u6765\u7535\u6307\u793a<\/li>\n<\/ul>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u5730\u7ebf<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>GND\uff1a\u6240\u6709\u4fe1\u53f7\u516c\u5171\u53c2\u8003\u5730<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">4\ufe0f\u20e3 \u5e38\u7528\u4e32\u53e3\u8fde\u63a5\u793a\u4f8b<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">\u2460 PC \u2194 Modem\uff08\u76f4\u8fde\uff09<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nPC DB9\u6bcd\u5934  \u2194 Modem DB9\u516c\u5934\nTXD \u2194 RXD\nRXD \u2194 TXD\nGND \u2194 GND\nRTS \u2194 CTS\nCTS \u2194 RTS\nDTR \u2194 DSR\nDSR \u2194 DTR\nDCD \u2194 DCD\n\n<\/pre><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u2461 \u4e24\u53f0 PC \u76f4\u63a5\u8fde\u63a5\uff08Null Modem \u4ea4\u53c9\u7ebf\uff09<\/h3>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nTXD \u2194 RXD\nRXD \u2194 TXD\nRTS \u2194 CTS\nCTS \u2194 RTS\nDTR \u2194 DSR\nDSR \u2194 DTR\nGND \u2194 GND\n\n<\/pre><\/div>\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Null Modem \u7ebf\u5e38\u7528\u4e8e PC \u2194 PC \u4e32\u53e3\u901a\u4fe1\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">5\ufe0f\u20e3 \u5c0f\u7ed3<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DB9 9 \u9488\u63a5\u53e3\u662f RS-232 \u6700\u7ecf\u5178\u63a5\u53e3<\/li>\n\n\n\n<li>\u9488\u811a\u4fe1\u53f7\u5206\u4e3a <strong>\u6570\u636e\u7ebf\u3001\u63a7\u5236\u7ebf\u3001\u5730\u7ebf<\/strong><\/li>\n\n\n\n<li>\u516c\u6bcd\u5934\u5bf9\u63a5\uff0cDTE \u2194 DCE \u89d2\u8272\u6b63\u786e\uff0c\u624d\u80fd\u901a\u4fe1<\/li>\n\n\n\n<li>\u8c03\u8bd5\u5e38\u7528\u76f4\u8fde\u7ebf\u6216 Null Modem \u7ebf<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0b\u9762\u7ed9\u4f60\u6574\u7406\u4e00\u4efd RS-232\uff08DB9\uff09\u63a5\u53e3\u57fa\u7840\u5b9a\u4e49\uff0c\u6db5\u76d6\u4e5d\u9488\u516c\u5934\/\u6bcd\u5934\u7684\u9488\u811a\u5b9a&#8230; <a class=\"more-link\" href=\"https:\/\/www.52runoob.com\/index.php\/2025\/11\/27\/%e5%9f%ba%e7%a1%80-db9%e4%b9%9d%e5%ad%94%e6%af%8d%e5%a4%b4%e3%80%81%e4%b9%9d%e9%92%88%e5%85%ac%e5%a4%b4-%ef%bc%88rs232%ef%bc%89%e6%8e%a5%e5%8f%a3%e5%ae%9a%e4%b9%89\/\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-245","post","type-post","status-publish","format-standard","hentry","category-java"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/245","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=245"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/245\/revisions"}],"predecessor-version":[{"id":246,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/245\/revisions\/246"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=245"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=245"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=245"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}