【弱电基础】RS485相关介绍
<section style="box-sizing: border-box; background-color: rgb(255, 255, 255);"><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px; text-align: center;box-sizing: border-box; "> <section style="padding: 20px 10px; box-sizing: border-box; background-image: url(http://mmbiz.qpic.cn/mmbiz/p8CaKzvQibq6thDC9Dcibm41zWow31ph0UhFcZBpdq1EnnN9Ifx0O3qk31BIQ0DsbGQbmSkrX4TZam2UZDhzSoVw/0?wx_fmt=png); background-color: rgb(246, 243, 234); background-position: 50% 50%; background-repeat: repeat;" class=""><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section style="transform: rotate(-5deg); width: 230px; height: 110px; padding-top: 20px; padding-bottom: 20px; margin-left: auto; margin-right: auto; color: rgb(255, 255, 240); font-size: 28.8px; box-sizing: border-box; background-image: url(http://mmbiz.qpic.cn/mmbiz/p8CaKzvQibq6thDC9Dcibm41zWow31ph0UjKu66X5hic0aWibNAUYx73hYGcPU4NoRbbGzW0rZfr5nxJ8tsoWMUib0Q/0?wx_fmt=png); background-size: cover; background-position: 50% 50%; background-repeat: no-repeat;" class=""><section style="box-sizing: border-box;">RS485</section></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><section style="box-sizing: border-box;"><br style="box-sizing: border-box;"></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" padding-left: 15px;box-sizing: border-box; "><section class="" style="display: inline-block; vertical-align: top; width: 95%; box-sizing: border-box;"><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); height: 1.2em; box-sizing: border-box;"></section><section class="" style="border: 1px solid; color: rgb(166, 91, 203); font-size: 19.2px; display: inline-block; float: left; width: 1.33em; height: 1.33em; line-height: 1.33em; margin-left: -0.666em; border-radius: 100%; text-align: center; box-sizing: border-box; background-color: rgb(254, 255, 255);"><section style="box-sizing: border-box;">1</section></section><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); width: 95%; box-sizing: border-box;"><section class="" style="padding-left: 5px; width: 94%; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" padding-right: 10px; padding-bottom: 10px; padding-left: 10px;box-sizing: border-box; "><section class="" style="color: rgb(166, 91, 203); font-size: 18px; box-sizing: border-box;"><section style="box-sizing: border-box;">RS485的工作原理</section></section></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; border: 1px solid rgb(192, 200, 209); padding: 10px; box-shadow: rgb(170, 170, 170) 0px 0px 10px; box-sizing: border-box; background-color: rgb(250, 250, 239);"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="color: rgb(51, 51, 51); box-sizing: border-box;"><p style="box-sizing: border-box;">RS485的逻辑特性：</p><p style="box-sizing: border-box;">RS485以+（2~6）V表示逻辑1，以-（2~6）V表示逻辑0。</p><p style="box-sizing: border-box;">也就是说RS485信号的电压范围是2-6V，靠电压变化来识别信号。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" padding-left: 15px;box-sizing: border-box; "><section class="" style="display: inline-block; vertical-align: top; width: 95%; box-sizing: border-box;"><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); height: 1.2em; box-sizing: border-box;"></section><section class="" style="border: 1px solid; color: rgb(166, 91, 203); font-size: 19.2px; display: inline-block; float: left; width: 1.33em; height: 1.33em; line-height: 1.33em; margin-left: -0.666em; border-radius: 100%; text-align: center; box-sizing: border-box; background-color: rgb(254, 255, 255);"><section style="box-sizing: border-box;">2</section></section><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); width: 95%; box-sizing: border-box;"><section class="" style="padding-left: 5px; width: 94%; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" padding-right: 10px; padding-bottom: 10px; padding-left: 10px;box-sizing: border-box; "><section class="" style="color: rgb(166, 91, 203); font-size: 18px; box-sizing: border-box;"><section style="box-sizing: border-box;">RS485线的选择</section></section></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; border: 1px solid rgb(192, 200, 209); padding: 10px; box-shadow: rgb(170, 170, 170) 0px 0px 10px; box-sizing: border-box; background-color: rgb(250, 250, 239);"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="color: rgb(51, 51, 51); box-sizing: border-box;"><section style="box-sizing: border-box;">建议屏蔽双绞线，保证有较好的抗干扰性。</section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" padding-left: 15px;box-sizing: border-box; "><section class="" style="display: inline-block; vertical-align: top; width: 95%; box-sizing: border-box;"><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); height: 1.2em; box-sizing: border-box;"></section><section class="" style="border: 1px solid; color: rgb(166, 91, 203); font-size: 19.2px; display: inline-block; float: left; width: 1.33em; height: 1.33em; line-height: 1.33em; margin-left: -0.666em; border-radius: 100%; text-align: center; box-sizing: border-box; background-color: rgb(254, 255, 255);"><section style="box-sizing: border-box;">3</section></section><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); width: 95%; box-sizing: border-box;"><section class="" style="padding-left: 5px; width: 94%; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" padding-right: 10px; padding-bottom: 10px; padding-left: 10px;box-sizing: border-box; "><section class="" style="color: rgb(166, 91, 203); font-size: 18px; box-sizing: border-box;"><section style="box-sizing: border-box;">引起RS485信号衰减的因素</section></section></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; border: 1px solid rgb(192, 200, 209); padding: 10px; box-shadow: rgb(170, 170, 170) 0px 0px 10px; box-sizing: border-box; background-color: rgb(250, 250, 239);"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="color: rgb(51, 51, 51); box-sizing: border-box;"><p style="box-sizing: border-box;">485信号传输过程中会因为：</p><p style="box-sizing: border-box;">线材（如使用非屏蔽双绞线，或者将网线改造成控制线）、</p><p style="box-sizing: border-box;">外部环境（有大功率的设备产生静电干扰）、</p><p style="box-sizing: border-box;">连接的设备数等因素导致电压值下降。</p><section style="box-sizing: border-box;"><br style="box-sizing: border-box;"></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" padding-left: 15px;box-sizing: border-box; "><section class="" style="display: inline-block; vertical-align: top; width: 95%; box-sizing: border-box;"><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); height: 1.2em; box-sizing: border-box;"></section><section class="" style="border: 1px solid; color: rgb(166, 91, 203); font-size: 19.2px; display: inline-block; float: left; width: 1.33em; height: 1.33em; line-height: 1.33em; margin-left: -0.666em; border-radius: 100%; text-align: center; box-sizing: border-box; background-color: rgb(254, 255, 255);"><section style="box-sizing: border-box;">4</section></section><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); width: 95%; box-sizing: border-box;"><section class="" style="padding-left: 5px; width: 94%; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" padding-right: 10px; padding-bottom: 10px; padding-left: 10px;box-sizing: border-box; "><section class="" style="color: rgb(166, 91, 203); font-size: 18px; box-sizing: border-box;"><section style="box-sizing: border-box;">RS485信号的干扰</section></section></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; border: 1px solid rgb(192, 200, 209); padding: 10px; box-shadow: rgb(170, 170, 170) 0px 0px 10px; box-sizing: border-box; background-color: rgb(250, 250, 239);"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="color: rgb(51, 51, 51); box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="color: rgb(249, 110, 87); box-sizing: border-box;">共模干扰</span>：</p><p style="box-sizing: border-box;">是指485传输线以外的导体对485传输信号产生的干扰，这类干扰会导致485传输线的电压同向变化（正负都增加或者减小），超出正常范围。</p><p style="box-sizing: border-box;">一般多为地线或者电源线的干扰。</p><section style="box-sizing: border-box;"><br style="box-sizing: border-box;"></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="padding-top: 1.1em; box-sizing: border-box;"><section style="display: inline-block; vertical-align: top; box-sizing: border-box;"><section class="" style="border-radius: 0px 0.5em 0.5em 0px; padding: 0.2em 0.4em; color: rgb(255, 255, 255); box-sizing: border-box; background-color: rgb(166, 91, 203);"><section style="box-sizing: border-box;">解决办法</section></section><section style="width: 0px; border-right-width: 4px; border-right-style: solid; border-right-color: rgb(166, 91, 203); border-top-width: 4px; border-top-style: solid; border-top-color: rgb(166, 91, 203); border-left-width: 4px !important; border-left-style: solid !important; border-left-color: transparent !important; border-bottom-width: 4px !important; border-bottom-style: solid !important; border-bottom-color: transparent !important; box-sizing: border-box;"></section></section><section class="" style="display: inline-block; vertical-align: top; padding-left: 10px; font-size: 20.8px; box-sizing: border-box;"><section style="box-sizing: border-box;"><br style="box-sizing: border-box;"></section></section><section class="" style="border: 1px solid rgb(204, 204, 204); padding: 3.5em 10px 10px; margin-left: 8px; margin-top: -3.5em; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><section style="box-sizing: border-box;">使用屏蔽双绞线。</section></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; border: 1px solid rgb(192, 200, 209); padding: 10px; box-shadow: rgb(170, 170, 170) 0px 0px 10px; box-sizing: border-box; background-color: rgb(250, 250, 239);"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="color: rgb(51, 51, 51); box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="color: rgb(249, 110, 87); box-sizing: border-box;">差模干扰</span>：</p><p style="box-sizing: border-box;">是指485传输线正负线之间的干扰，会导致485信号的电压反向变化（正负变化不一致）。</p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="padding-top: 1.1em; box-sizing: border-box;"><section style="display: inline-block; vertical-align: top; box-sizing: border-box;"><section class="" style="border-radius: 0px 0.5em 0.5em 0px; padding: 0.2em 0.4em; color: rgb(255, 255, 255); box-sizing: border-box; background-color: rgb(166, 91, 203);"><section style="box-sizing: border-box;">解决办法</section></section><section style="width: 0px; border-right-width: 4px; border-right-style: solid; border-right-color: rgb(166, 91, 203); border-top-width: 4px; border-top-style: solid; border-top-color: rgb(166, 91, 203); border-left-width: 4px !important; border-left-style: solid !important; border-left-color: transparent !important; border-bottom-width: 4px !important; border-bottom-style: solid !important; border-bottom-color: transparent !important; box-sizing: border-box;"></section></section><section class="" style="display: inline-block; vertical-align: top; padding-left: 10px; font-size: 20.8px; box-sizing: border-box;"><section style="box-sizing: border-box;"><br style="box-sizing: border-box;"></section></section><section class="" style="border: 1px solid rgb(204, 204, 204); padding: 3.5em 10px 10px; margin-left: 8px; margin-top: -3.5em; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;">多个球机之间的连接建议使用手拉手的方式，不使用星型方式。</p><p style="box-sizing: border-box;">不使用星型连接方式的原因有两点：</p><p style="box-sizing: border-box;">1、星型连接方式容易在485控制线汇总的一端产生共模干扰。</p><p style="box-sizing: border-box;">2、485线之间的差模干扰全汇聚到汇总端，容易导致信号失真。</p></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em;box-sizing: border-box; "><section class="" style="display: inline-block; vertical-align: top; width: 50%; text-align: right; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "></section></section></section><section class="" style="display: inline-block; vertical-align: top; width: 50%; padding-left: 5px; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em; padding-left: 19px;box-sizing: border-box; "><section class="" style="width: 0px; margin-top: 2em; margin-right: 22px; margin-left: -19px; display: inline-block; vertical-align: top; box-sizing: border-box;"><section style="width: 0px; border-right-width: 20px; border-right-style: solid; border-right-color: rgb(166, 91, 203); border-top-width: 10px !important; border-top-style: solid !important; border-top-color: transparent !important; border-bottom-width: 10px !important; border-bottom-style: solid !important; border-bottom-color: transparent !important; box-sizing: border-box;"></section><section style="width: 0px; margin-top: -19px; margin-bottom: -19px; margin-left: 3px; border-right-width: 18px; border-right-style: solid; border-right-color: rgb(255, 255, 255); box-sizing: border-box; border-top-width: 9px !important; border-top-style: solid !important; border-top-color: transparent !important; border-bottom-width: 9px !important; border-bottom-style: solid !important; border-bottom-color: transparent !important;"></section></section><section class="" style="padding: 10px; width: 100%; margin-top: -2em; min-height: 4em; border: 1px solid rgb(166, 91, 203); box-shadow: rgb(204, 204, 204) -3px 3px 5px; box-sizing: border-box; background-color: rgb(254, 255, 255);"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 19.2px; color: rgb(166, 91, 203); box-sizing: border-box;"><section style="box-sizing: border-box;">推荐方式：手拉手连接</section></section></section></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em;box-sizing: border-box; "><section class="" style="display: inline-block; vertical-align: top; width: 50%; padding-right: 20px; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em;box-sizing: border-box; "><section class="" style="display: inline-block; padding: 10px; vertical-align: top; width: 100%; border: 1px solid rgb(166, 91, 203); box-shadow: rgb(204, 204, 204) 3px 3px 5px; margin-right: -20px; box-sizing: border-box; background-color: rgb(254, 255, 255);"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 19.2px; box-sizing: border-box;"><section style="box-sizing: border-box;">不建议的方式：星型连接</section></section></section></section></section><section class="" style="display: inline-block; vertical-align: top; width: 0px; margin-top: 2em; margin-left: 19px; box-sizing: border-box;"><section style="width: 0px; border-left-width: 20px; border-left-style: solid; border-left-color: rgb(166, 91, 203); border-top-width: 10px !important; border-top-style: solid !important; border-top-color: transparent !important; border-bottom-width: 10px !important; border-bottom-style: solid !important; border-bottom-color: transparent !important; box-sizing: border-box;"></section><section style="width: 0px; margin-top: -19px; margin-bottom: -19px; border-left-width: 18px; border-left-style: solid; border-left-color: rgb(255, 255, 255); box-sizing: border-box; border-top-width: 9px !important; border-top-style: solid !important; border-top-color: transparent !important; border-bottom-width: 9px !important; border-bottom-style: solid !important; border-bottom-color: transparent !important;"></section></section></section></section></section><section class="" style="display: inline-block; vertical-align: top; width: 50%; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" padding-left: 15px;box-sizing: border-box; "><section class="" style="display: inline-block; vertical-align: top; width: 95%; box-sizing: border-box;"><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); height: 1.2em; box-sizing: border-box;"></section><section class="" style="border: 1px solid; color: rgb(166, 91, 203); font-size: 19.2px; display: inline-block; float: left; width: 1.33em; height: 1.33em; line-height: 1.33em; margin-left: -0.666em; border-radius: 100%; text-align: center; box-sizing: border-box; background-color: rgb(254, 255, 255);"><section style="box-sizing: border-box;">5</section></section><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); width: 95%; box-sizing: border-box;"><section class="" style="padding-left: 5px; width: 94%; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" padding-right: 10px; padding-bottom: 10px; padding-left: 10px;box-sizing: border-box; "><section class="" style="color: rgb(166, 91, 203); font-size: 18px; box-sizing: border-box;"><section style="box-sizing: border-box;">485分配器</section></section></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; border: 1px solid rgb(192, 200, 209); padding: 10px; box-shadow: rgb(170, 170, 170) 0px 0px 10px; box-sizing: border-box; background-color: rgb(250, 250, 239);"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="color: rgb(51, 51, 51); box-sizing: border-box;"><section style="box-sizing: border-box;">比如采用星型链接方式，实现一台录像机需要控制多台球机，可以使用485分配器来实现。</section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" padding-left: 15px;box-sizing: border-box; "><section class="" style="display: inline-block; vertical-align: top; width: 95%; box-sizing: border-box;"><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); height: 1.2em; box-sizing: border-box;"></section><section class="" style="border: 1px solid; color: rgb(166, 91, 203); font-size: 19.2px; display: inline-block; float: left; width: 1.33em; height: 1.33em; line-height: 1.33em; margin-left: -0.666em; border-radius: 100%; text-align: center; box-sizing: border-box; background-color: rgb(254, 255, 255);"><section style="box-sizing: border-box;">6</section></section><section style="border-left-width: 1px; border-left-style: solid; border-color: rgb(166, 91, 203); width: 95%; box-sizing: border-box;"><section class="" style="padding-left: 5px; width: 94%; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" padding-right: 10px; padding-bottom: 10px; padding-left: 10px;box-sizing: border-box; "><section class="" style="color: rgb(166, 91, 203); font-size: 18px; box-sizing: border-box;"><section style="box-sizing: border-box;">485共享器</section></section></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; border: 1px solid rgb(192, 200, 209); padding: 10px; box-shadow: rgb(170, 170, 170) 0px 0px 10px; box-sizing: border-box; background-color: rgb(250, 250, 239);"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="color: rgb(51, 51, 51); box-sizing: border-box;"><section style="box-sizing: border-box;">比如一个模拟球机需要接入多台录像机实现控制，可以使用485共享器来实现。</section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; "><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="padding-left: 1em; padding-right: 1em; display: inline-block; text-align: center; box-sizing: border-box;"><span style="display: inline-block; padding: 0.3em 0.5em; border-radius: 0.5em; font-size: 14.08px; color: rgb(255, 255, 255); box-sizing: border-box; background-color: rgb(166, 91, 203);" class=""><section style="box-sizing: border-box;">END</section></span> </section><section class="" style="border: 1px solid rgb(192, 200, 209); margin-top: -1em; padding: 20px 10px 10px; box-sizing: border-box; background-color: rgb(239, 239, 239);"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><section style="text-align: center; box-sizing: border-box;">那些关于RS485的事就说到这了~</section></section></section></section></section></section></section></section><p><br></p>
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