Labview与三菱FX-PLC串口通讯程序
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Labview与三菱FX_PLC串口通讯程序 <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/90274210/2/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/90274210/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">LabVIEW<span class="_ _0"> </span><span class="ff2">与三菱<span class="_ _1"> </span></span>FX_PLC<span class="_ _0"> </span><span class="ff2">串口通讯程序</span></div><div class="t m0 x1 h2 y2 ff2 fs0 fc0 sc0 ls0 ws0">引言<span class="ff3">：</span></div><div class="t m0 x1 h2 y3 ff2 fs0 fc0 sc0 ls0 ws0">在工业自动化领域<span class="ff3">，<span class="ff1">PLC</span>（<span class="ff1">Programmable Logic Controller</span>，</span>可编程逻辑控制器<span class="ff3">）</span>是一种常见</div><div class="t m0 x1 h2 y4 ff2 fs0 fc0 sc0 ls0 ws0">且重要的设备<span class="ff4">。</span>而与<span class="_ _1"> </span><span class="ff1">PLC<span class="_ _0"> </span></span>进行通信的方式又有多种<span class="ff3">，</span>串口通信是其中之一<span class="ff4">。</span>本文将重点探讨</div><div class="t m0 x1 h2 y5 ff1 fs0 fc0 sc0 ls0 ws0">LabVIEW<span class="_ _0"> </span><span class="ff2">与三菱<span class="_ _1"> </span></span>FX_PLC<span class="_ _0"> </span><span class="ff2">之间的串口通信程序的开发与实现<span class="ff4">。</span></span></div><div class="t m0 x1 h2 y6 ff2 fs0 fc0 sc0 ls0 ws0">一<span class="ff4">、</span>背景介绍</div><div class="t m0 x1 h3 y7 ff1 fs0 fc0 sc0 ls0 ws0">1.1 LabVIEW</div><div class="t m0 x2 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">LabVIEW<span class="_ _0"> </span><span class="ff2">是全称为<span class="_ _1"> </span></span>Laboratory Virtual Instrument Engineering Workbench<span class="ff3">（<span class="ff2">实验室</span></span></div><div class="t m0 x1 h2 y9 ff2 fs0 fc0 sc0 ls0 ws0">虚拟仪器工程平台<span class="ff3">）</span>的缩写<span class="ff3">，</span>是一款全球应用最广泛的面向工程师和科学家的系统设计软件<span class="ff4">。</span>它以图</div><div class="t m0 x1 h2 ya ff2 fs0 fc0 sc0 ls0 ws0">形化的编程语言<span class="_ _1"> </span><span class="ff1">G<span class="_ _0"> </span></span>语言为基础<span class="ff3">，</span>集成了数据采集<span class="ff4">、</span>仪器控制<span class="ff4">、</span>信号处理<span class="ff4">、</span>分析以及可视化等多种功能</div><div class="t m0 x1 h4 yb ff4 fs0 fc0 sc0 ls0 ws0">。</div><div class="t m0 x1 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">1.2 <span class="ff2">三菱<span class="_ _1"> </span></span>FX_PLC</div><div class="t m0 x1 h2 yd ff2 fs0 fc0 sc0 ls0 ws0">三菱<span class="_ _1"> </span><span class="ff1">FX_PLC<span class="_ _0"> </span></span>是三菱电机公司推出的一种小型可编程控制器<span class="ff3">，</span>广泛应用于各类工业自动化系统中<span class="ff4">。</span>它</div><div class="t m0 x1 h2 ye ff2 fs0 fc0 sc0 ls0 ws0">具有体积小<span class="ff4">、</span>功能强<span class="ff4">、</span>稳定性高等特点<span class="ff3">，</span>在许多自动化控制场景中得到了广泛的应用<span class="ff4">。</span></div><div class="t m0 x1 h2 yf ff2 fs0 fc0 sc0 ls0 ws0">二<span class="ff4">、</span>串口通信原理</div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">2.1 <span class="ff2">串口通信概述</span></div><div class="t m0 x1 h2 y11 ff2 fs0 fc0 sc0 ls0 ws0">串口通信是计算机与外部设备之间进行数据传输的一种常见方式<span class="ff4">。</span>它通过计算机的串口接口与外部设</div><div class="t m0 x1 h2 y12 ff2 fs0 fc0 sc0 ls0 ws0">备进行连接<span class="ff3">，</span>实现数据的收发<span class="ff4">。</span>在本文中<span class="ff3">，</span>我们将使用<span class="_ _1"> </span><span class="ff1">LabVIEW<span class="_ _0"> </span></span>作为计算机的软件平台<span class="ff3">，</span>通过串口</div><div class="t m0 x1 h2 y13 ff2 fs0 fc0 sc0 ls0 ws0">与三菱<span class="_ _1"> </span><span class="ff1">FX_PLC<span class="_ _0"> </span></span>进行通信<span class="ff4">。</span></div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0">2.2 <span class="ff2">三菱<span class="_ _1"> </span></span>FX_PLC<span class="_ _0"> </span><span class="ff2">串口通信协议</span></div><div class="t m0 x1 h2 y15 ff2 fs0 fc0 sc0 ls0 ws0">三菱<span class="_ _1"> </span><span class="ff1">FX_PLC<span class="_ _0"> </span></span>的串口通信协议采用了一种特定的格式<span class="ff3">，</span>其中包含了数据的起始位<span class="ff4">、</span>停止位<span class="ff4">、</span>校验位等</div><div class="t m0 x1 h2 y16 ff4 fs0 fc0 sc0 ls0 ws0">。<span class="ff1">LabVIEW<span class="_ _0"> </span><span class="ff2">通过串口通信模块与三菱<span class="_ _1"> </span></span>FX_PLC<span class="_ _0"> </span><span class="ff2">进行通信时<span class="ff3">，</span>需要按照该协议的格式进行数据的发送</span></span></div><div class="t m0 x1 h2 y17 ff2 fs0 fc0 sc0 ls0 ws0">和接收<span class="ff4">。</span></div><div class="t m0 x1 h2 y18 ff2 fs0 fc0 sc0 ls0 ws0">三<span class="ff4">、<span class="ff1">LabVIEW<span class="_ _0"> </span></span></span>与三菱<span class="_ _1"> </span><span class="ff1">FX_PLC<span class="_ _0"> </span></span>串口通信程序的开发</div><div class="t m0 x1 h2 y19 ff1 fs0 fc0 sc0 ls0 ws0">3.1 <span class="ff2">硬件环境配置</span></div><div class="t m0 x1 h2 y1a ff2 fs0 fc0 sc0 ls0 ws0">首先<span class="ff3">，</span>我们需要准备好<span class="_ _1"> </span><span class="ff1">LabVIEW<span class="_ _0"> </span></span>开发环境和三菱<span class="_ _1"> </span><span class="ff1">FX_PLC<span class="_ _0"> </span></span>设备<span class="ff4">。<span class="ff1">LabVIEW<span class="_ _0"> </span></span></span>的安装和配置可以参考官</div><div class="t m0 x1 h2 y1b ff2 fs0 fc0 sc0 ls0 ws0">方文档进行<span class="ff3">；</span>三菱<span class="_ _1"> </span><span class="ff1">FX_PLC<span class="_ _0"> </span></span>的连接和调试可以参考三菱<span class="_ _1"> </span><span class="ff1">FX_PLC<span class="_ _0"> </span></span>的相关文档进行<span class="ff4">。</span></div><div class="t m0 x1 h2 y1c ff1 fs0 fc0 sc0 ls0 ws0">3.2 <span class="ff2">创建串口通信模块</span></div><div class="t m0 x1 h2 y1d ff2 fs0 fc0 sc0 ls0 ws0">在<span class="_ _1"> </span><span class="ff1">LabVIEW<span class="_ _0"> </span></span>中<span class="ff3">，</span>我们可以创建一个串口通信模块<span class="ff3">，</span>用于与三菱<span class="_ _1"> </span><span class="ff1">FX_PLC<span class="_ _0"> </span></span>进行数据的收发<span class="ff4">。</span>首先<span class="ff3">，</span>在</div><div class="t m0 x1 h2 y1e ff1 fs0 fc0 sc0 ls0 ws0">LabVIEW<span class="_ _0"> </span><span class="ff2">的开发环境中创建一个新的<span class="_ _1"> </span></span>VI<span class="ff3">，<span class="ff2">然后选择<span class="_ _1"> </span></span></span>Serial Instrument<span class="_ _0"> </span><span class="ff2">模板<span class="ff3">，</span>进行串口通信模</span></div><div class="t m0 x1 h2 y1f ff2 fs0 fc0 sc0 ls0 ws0">块的创建<span class="ff4">。</span></div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>