三菱FX3U通讯（RTU）实现四台变频器精准控制及实时反馈，PLC编程教程与操作视频,三菱FX3U通讯RTU模式驱动四台变频器：PLC编程与触摸屏控制，支持多种品牌变频器,三菱FX3U通讯（RTU）四
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三菱FX3U通讯（RTU）实现四台变频器精准控制及实时反馈，PLC编程教程与操作视频,三菱FX3U通讯RTU模式驱动四台变频器：PLC编程与触摸屏控制，支持多种品牌变频器,三菱FX3U通讯（RTU）四台变频器的通讯程序1.硬件:三菱FX3U PLC加fx3u485bd通讯板,四台三菱E700变频器，威纶mt6070触摸屏。2.功能:通过rtu方式，使用RS+CRC指令，可以控制四台变频器的正反转停止和频率设定，实时运行频率的读取。支持通讯断线检测。控器效果好，反馈快，plc程序一共四百多步。视频为实际操作效果。3.容包括触摸屏和plc程序，接线说明，变频器参数设置，视频教程。4.更多说明:控制方式为rtu方式，其他变频器只要是支持这个方式都可以在原程序基础上修改然后使用，比如台达vfd-m，ABB510…。,核心关键词：三菱FX3U PLC; fx3u485bd通讯板; 变频器通讯程序; RS+CRC指令; 正反转控制; 频率设定; 实时运行频率读取; 通讯断线检测; 触摸屏; 视频教程; 威纶mt6070触摸屏; 接线说明; 变频器参数设置。,三菱FX3U PLC与 <link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90430820/2/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90430820/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">标题：三菱<span class="_ _0"> </span><span class="ff2">FX3U PLC<span class="_ _0"> </span></span>与四台变频器的<span class="_ _0"> </span><span class="ff2">RTU<span class="_ _0"> </span></span>通讯实战</div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0">摘要：本文将详细介绍如何使用三菱<span class="_ _0"> </span><span class="ff2">FX3U <span class="_ _1"></span>PLC<span class="_"> </span></span>与四台三菱<span class="_ _0"> </span><span class="ff2">E700<span class="_ _0"> </span></span>变频器进行<span class="_ _0"> </span><span class="ff2">RTU<span class="_ _0"> </span></span>通讯。我</div><div class="t m0 x1 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">们将从硬件配置、<span class="_ _2"></span><span class="ff2">PLC<span class="_ _0"> </span><span class="ff1">程序设计、<span class="_ _2"></span>变频器参数设置、<span class="_ _2"></span>触摸屏界面设计以及通讯断线检测等方</span></span></div><div class="t m0 x1 h2 y4 ff1 fs0 fc0 sc0 ls0 ws0">面进行详<span class="_ _1"></span>细阐述<span class="_ _1"></span>，并附<span class="_ _1"></span>上实际<span class="_ _1"></span>操作的<span class="_ _1"></span>视频教<span class="_ _1"></span>程。此<span class="_ _1"></span>外，对<span class="_ _1"></span>于其他<span class="_ _1"></span>支持<span class="_ _0"> </span><span class="ff2">RTU<span class="_"> </span></span>通讯的<span class="_ _1"></span>变频器<span class="_ _1"></span>，</div><div class="t m0 x1 h2 y5 ff1 fs0 fc0 sc0 ls0 ws0">如台达<span class="_ _0"> </span><span class="ff2">VFD-M</span>、<span class="ff2">ABB 510<span class="_ _0"> </span></span>等，也可在原程序基础上进行简单修改后使用。</div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0">一、硬件配置</div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0">首先，<span class="_ _1"></span>我们需<span class="_ _1"></span>要准<span class="_ _1"></span>备三菱<span class="_ _3"> </span><span class="ff2">FX3U PLC<span class="_"> </span></span>以及<span class="_ _0"> </span><span class="ff2">fx3u485bd<span class="_"> </span></span>通讯板<span class="_ _1"></span>，四台<span class="_ _1"></span>三菱<span class="_ _0"> </span><span class="ff2">E700<span class="_"> </span></span>变频器<span class="_ _1"></span>，以<span class="_ _1"></span>及</div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">威纶<span class="_ _3"> </span><span class="ff2">MT6070<span class="_"> </span></span>触摸屏<span class="_ _1"></span>。这<span class="_ _1"></span>些硬<span class="_ _1"></span>件设<span class="_ _1"></span>备将<span class="_ _1"></span>构成<span class="_ _1"></span>我们<span class="_ _1"></span>的控<span class="_ _1"></span>制系<span class="_ _1"></span>统，<span class="_ _1"></span>实现<span class="_ _3"> </span><span class="ff2">PLC<span class="_"> </span></span>与变频<span class="_ _1"></span>器之<span class="_ _1"></span>间的<span class="_ _1"></span>通</div><div class="t m0 x1 h2 y9 ff1 fs0 fc0 sc0 ls0 ws0">讯。</div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">二、<span class="ff2">PLC<span class="_ _0"> </span></span>程序设计</div><div class="t m0 x1 h2 yb ff1 fs0 fc0 sc0 ls0 ws0">在<span class="_ _0"> </span><span class="ff2">PLC<span class="_"> </span></span>程序中，我们将使用<span class="_ _0"> </span><span class="ff2">RTU<span class="_"> </span></span>方式进行通讯，通过<span class="_ _0"> </span><span class="ff2">RS+CRC<span class="_"> </span></span>指令实现与变频器的数据交</div><div class="t m0 x1 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">换。<span class="_ _4"></span>程序将包括正反转控制、<span class="_ _4"></span>停止控制、<span class="_ _4"></span>频率设定以及实时运行频率的读取等功能。<span class="_ _4"></span>整个<span class="_ _0"> </span><span class="ff2">PLC</span></div><div class="t m0 x1 h2 yd ff1 fs0 fc0 sc0 ls0 ws0">程序共计四百多步，控器效果好，反馈快。</div><div class="t m0 x1 h2 ye ff1 fs0 fc0 sc0 ls0 ws0">示例代码（部分）<span class="_ _5"></span>：</div><div class="t m0 x1 h2 yf ff2 fs0 fc0 sc0 ls0 ws0">```plc</div><div class="t m0 x1 h2 y10 ff2 fs0 fc0 sc0 ls0 ws0">// <span class="_ _6"> </span><span class="ff1">初始化通讯参数</span></div><div class="t m0 x1 h2 y11 ff2 fs0 fc0 sc0 ls0 ws0">RS_CRC ON; // <span class="_ _6"> </span><span class="ff1">开启<span class="_ _0"> </span></span>RS+CRC<span class="_ _6"> </span><span class="ff1">通讯协议</span></div><div class="t m0 x1 h2 y12 ff2 fs0 fc0 sc0 ls0 ws0">// <span class="_ _6"> </span><span class="ff1">读取变频器运行频率</span></div><div class="t m0 x1 h2 y13 ff2 fs0 fc0 sc0 ls0 ws0">LD SM0.0 <span class="_ _7"> </span>// <span class="_ _6"> </span><span class="ff1">开始循环</span></div><div class="t m0 x1 h2 y14 ff2 fs0 fc0 sc0 ls0 ws0">... (<span class="ff1">其他逻辑代码</span>)</div><div class="t m0 x1 h2 y15 ff2 fs0 fc0 sc0 ls0 ws0">OUT S7.0 <span class="_ _8"> </span>// <span class="_ _6"> </span><span class="ff1">输出到变频器，读取运行频率</span></div><div class="t m0 x1 h2 y16 ff2 fs0 fc0 sc0 ls0 ws0">...</div><div class="t m0 x1 h2 y17 ff2 fs0 fc0 sc0 ls0 ws0">// <span class="_ _6"> </span><span class="ff1">频率设定及正反转控制等逻辑代码</span>...</div><div class="t m0 x1 h2 y18 ff2 fs0 fc0 sc0 ls0 ws0">```</div><div class="t m0 x1 h2 y19 ff1 fs0 fc0 sc0 ls0 ws0">三、变频器参数设置</div><div class="t m0 x1 h2 y1a ff1 fs0 fc0 sc0 ls0 ws0">对于四台三菱<span class="_ _0"> </span><span class="ff2">E700<span class="_ _0"> </span></span>变频器，<span class="_ _4"></span>我们需要进行相应的参数设置，<span class="_ _4"></span>以匹配<span class="_ _6"> </span><span class="ff2">PLC<span class="_"> </span></span>的通讯协议和指令。</div><div class="t m0 x1 h2 y1b ff1 fs0 fc0 sc0 ls0 ws0">具体设置包括通讯方式、<span class="_ _9"></span>波特率、<span class="_ _9"></span>数据位、<span class="_ _9"></span>停止位、<span class="_ _9"></span>校验方式等。<span class="_ _9"></span>设置完成后，<span class="_ _9"></span>变频器将可</div><div class="t m0 x1 h2 y1c ff1 fs0 fc0 sc0 ls0 ws0">以与<span class="_ _0"> </span><span class="ff2">PLC<span class="_ _0"> </span></span>进行正常的数据交换。</div><div class="t m0 x1 h2 y1d ff1 fs0 fc0 sc0 ls0 ws0">四、触摸屏界面设计</div><div class="t m0 x1 h2 y1e ff1 fs0 fc0 sc0 ls0 ws0">威纶<span class="_ _0"> </span><span class="ff2">MT6070<span class="_ _6"> </span></span>触摸屏将为我们提供友好的人机交互界面。<span class="_ _a"></span>在触摸屏上，<span class="_ _a"></span>我们可以设计相应的</div><div class="t m0 x1 h2 y1f ff1 fs0 fc0 sc0 ls0 ws0">界面元素，如按钮、指示灯、数值显示等，以便于操作人员对变频器进行控制与监控。</div></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div>