RS232与RS485区别及传输距离

<section><section><section><section><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p></section></section></section></section><p style="margin-top: 0px; margin-bottom: 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.9); font-size: 17px; letter-spacing: 0.544px; text-align: justify; text-wrap: wrap; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; font-size: 14px;"><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-align: start; text-indent: 34px; widows: 1;">1、RS232：</span></strong></span></p><p style="margin-top: 0px; margin-bottom: 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.9); font-size: 17px; letter-spacing: 0.544px; text-align: justify; text-wrap: wrap; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-align: start; text-indent: 34px; widows: 1; font-size: 14px;">RS232传输距离有限，最大传输距离标准值为<strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;">15米</strong>，且只能点对点通讯，<strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;">最大传输速率最大为20kB/s。</strong></span></p><p style="margin-top: 0px; margin-bottom: 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.9); font-size: 17px; letter-spacing: 0.544px; text-align: justify; text-wrap: wrap; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; font-size: 14px;"><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-align: start; text-indent: 34px; widows: 1;">2、RS485：</span></strong></span></p><p style="margin-top: 0px; margin-bottom: 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.9); font-size: 17px; letter-spacing: 0.544px; text-align: justify; text-wrap: wrap; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; letter-spacing: 0.544px; text-align: start; text-indent: 34px; widows: 1; font-size: 14px;">RS485最大<strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important;">传输距离为1219米</strong>。最大传输速率为10Mbps，在100Kb/S的传输速率下，才可以达到最大的通信距离。</span></p><p style="margin-top: 0px; margin-bottom: 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.9); font-size: 17px; letter-spacing: 0.544px; text-align: justify; text-wrap: wrap; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; letter-spacing: 0.544px; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 14px; text-align: start; text-indent: 34px; widows: 1;">采用阻抗匹配</span><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; letter-spacing: 0.544px; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 14px; text-align: start; text-indent: 34px; widows: 1;">、低衰减的</strong><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; letter-spacing: 0.544px; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 14px; text-align: start; text-indent: 34px; widows: 1;">专用电缆可以达到1800米！超过1200米，可加</span><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; letter-spacing: 0.544px; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 14px; text-align: start; text-indent: 34px; widows: 1;">中继器</strong><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; box-sizing: border-box !important; overflow-wrap: break-word !important; letter-spacing: 0.544px; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 14px; text-align: start; text-indent: 34px; widows: 1;">（最多8只），这样传输距离接近10Km。</span></p><p style="margin-top: 0px; margin-bottom: 24px; padding: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; color: rgba(0, 0, 0, 0.9); font-size: 17px; letter-spacing: 0.544px; text-wrap: wrap; font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif; 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