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0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">05、网关配置</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">5.2、变量</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>变量配置说明</h1></header><div class="theme-admonition theme-admonition-tip alert alert--success admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span><mdxadmonitiontitle><code>配置须知</code></mdxadmonitiontitle></div><div class="admonitionContent_S0QG"><p> 更改采集设备/变量/上传设备/插件等，需要重启线程（网关状态-运行状态-全部重启/单个采集设备重启）</p></div></div><h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="一添加修改变量">（一）添加/修改变量<a class="hash-link" href="#一添加修改变量" title="Direct link to heading"></a></h3><p><img loading="lazy" src="/thingsgateway/assets/images/variable1-213e0189dd2d03c2f6d5cb6868504514.png" width="2312" height="1467" class="img_ev3q"></p><details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>变量基本属性</summary><div><div class="collapsibleContent_i85q"><div><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="名称">名称<a class="hash-link" href="#名称" title="Direct link to heading"></a></h4><p>当前采集设备名称，全局唯一(采集设备)</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="描述">描述<a class="hash-link" href="#描述" title="Direct link to heading"></a></h4><p>当前采集设备描述</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="设备">设备<a class="hash-link" href="#设备" title="Direct link to heading"></a></h4><p>当前变量选择的采集设备名称，通过选择器选择对应设备名称设置</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="变量地址">变量地址<a class="hash-link" href="#变量地址" title="Direct link to heading"></a></h4><p>对于不同的驱动,变量地址配置不相同，查看第六节，找到对应的驱动说明</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="执行间隔">执行间隔<a class="hash-link" href="#执行间隔" title="Direct link to heading"></a></h4><p>读取时间间隔</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="初始值">初始值<a class="hash-link" href="#初始值" title="Direct link to heading"></a></h4><p>变量初始值</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="读写权限">读写权限<a class="hash-link" href="#读写权限" title="Direct link to heading"></a></h4><p>读写/只写/只读</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="数据类型">数据类型<a class="hash-link" href="#数据类型" title="Direct link to heading"></a></h4><p>对应的数据类型，注意除了特殊驱动，否则不应该选择object</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="读取表达式">读取表达式<a class="hash-link" href="#读取表达式" title="Direct link to heading"></a></h4><p> 支持多种运算符，原始值的代码为raw，具体可查看 <a href="https://github.com/codingseb/ExpressionEvaluator" target="_blank" rel="noopener noreferrer">ExpressionEvaluator WiKi</a> </p><p> 示例：</p><div class="language-csharp codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-csharp codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> raw</span><span class="token operator" style="color:rgb(137, 221, 255)">*</span><span class="token number" style="color:rgb(247, 140, 108)">10</span><span class="token operator" style="color:rgb(137, 221, 255)">+</span><span class="token number" style="color:rgb(247, 140, 108)">3</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">//原始值raw为8，输出实时值83</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="写入表达式">写入表达式<a class="hash-link" href="#写入表达式" title="Direct link to heading"></a></h4><p>同读取表达式，在写入值时转化</p><p> 示例：</p><div class="language-csharp codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-csharp codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> raw</span><span class="token operator" style="color:rgb(137, 221, 255)">*</span><span class="token number" style="color:rgb(247, 140, 108)">10</span><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">//读取表达式</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> raw</span><span class="token operator" style="color:rgb(137, 221, 255)">/</span><span class="token number" style="color:rgb(247, 140, 108)">10</span><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">//写入表达式</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">//PLC原始值为22，读取实时值为220，写入值为230时，会下发23到PLC</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="特殊方法">特殊方法<a class="hash-link" href="#特殊方法" title="Direct link to heading"></a></h4><p>对于不同的驱动,特殊方法配置不相同，查看第六节，找到对应的驱动说明</p></div></div></div></details><details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>报警属性</summary><div><div class="collapsibleContent_i85q"><div><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="报警使能">报警使能<a class="hash-link" href="#报警使能" title="Direct link to heading"></a></h4><p>启用对应报警功能</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="报警限值">报警限值<a class="hash-link" href="#报警限值" title="Direct link to heading"></a></h4><p>超限时产生报警，布尔量为固定</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="报警文本">报警文本<a class="hash-link" href="#报警文本" title="Direct link to heading"></a></h4><p>对应报警文本</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="报警约束">报警约束<a class="hash-link" href="#报警约束" title="Direct link to heading"></a></h4><p>同变量表达式，计算值为true时才能产生报警</p></div></div></div></details><details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>历史属性</summary><div><div class="collapsibleContent_i85q"><div><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="历史使能">历史使能<a class="hash-link" href="#历史使能" title="Direct link to heading"></a></h4><p>启用对应历史转储功能</p><h4 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="存储类型">存储类型<a class="hash-link" href="#存储类型" title="Direct link to heading"></a></h4><p>1、Collect ：每次采集存储一次
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2、Change ：每次变化存储一次</p></div></div></div></details><details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>上传属性</summary><div><div class="collapsibleContent_i85q"><div><p>选择上传设备，点击刷新</p><p><img loading="lazy" src="/thingsgateway/assets/images/variable2-e95c0b99dcb1a4d6ace751078d4c4172.png" width="824" height="739" class="img_ev3q"></p><p>对于不同的驱动,变量上传属性配置不相同，查看第七节，找到对应的驱动说明</p></div></div></div></details><h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="二导入导出变量">（二）导入导出变量<a class="hash-link" href="#二导入导出变量" title="Direct link to heading"></a></h3><p>与设备导入导出一致，移至 <a href="/thingsgateway/docs/05、网关配置/collectdevice#%E4%BA%8C%E5%AF%BC%E5%85%A5%E5%AF%BC%E5%87%BA%E9%87%87%E9%9B%86%E8%AE%BE%E5%A4%87">这里</a> 查看</p></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://gitee.com/diego2098/ThingsGateway/tree/master/handbook/docs/05、网关配置/5.2、变量.mdx" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_vwxv"></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/thingsgateway/docs/05、网关配置/collectdevice"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">5.1、采集设备</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/thingsgateway/docs/05、网关配置/uploaddevice"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">5.3、上传设备</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#一添加修改变量" class="table-of-contents__link toc-highlight">（一）添加/修改变量</a></li><li><a href="#二导入导出变量" class="table-of-contents__link toc-highlight">（二）导入导出变量</a></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">文档</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/thingsgateway/docs">手册</a></li></ul></div><div class="col footer__col"><div class="footer__title">社区</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://gitee.com/diego2098/ThingsGateway/issues" target="_blank" rel="noopener noreferrer" class="footer__link-item">讨论<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li class="footer__item"><a href="https://gitee.com/diego2098/ThingsGateway/board" target="_blank" rel="noopener noreferrer" class="footer__link-item">看板<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li></ul></div><div class="col footer__col"><div class="footer__title">更多</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://gitee.com/diego2098/ThingsGateway" target="_blank" rel="noopener noreferrer" class="footer__link-item">仓库<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2020-2023 Diego.</div></div></div></footer></div>
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