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home-assistant.github.io/components/modbus/index.html
Travis CI b8845607d4 Site updated at 2016-07-30 21:23:25 UTC
2016-07-30 21:23:25 +00:00

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Modbus
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<p><a href="http://www.modbus.org/">Modbus</a> is a serial communication protocol to control PLCs (Programmable logic controller). It currently supports sensors and switches which can be controlled over serial, TCP, and UDP connections.</p>
<p>To add modbus to your installation, add the following to your <code>configuration.yaml</code> file:</p>
<p>For a network connection:</p>
<div class="highlighter-coderay"><div class="CodeRay">
<div class="code"><pre><span class="comment">#Modbus TCP</span>
<span class="key">modbus</span>:
<span class="key">type</span>: <span class="string"><span class="content">tcp</span></span>
<span class="key">host</span>: <span class="string"><span class="content">IP_ADDRESS</span></span>
<span class="key">port</span>: <span class="string"><span class="content">2020</span></span>
</pre></div>
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<p>Configuration variables:</p>
<ul>
<li><strong>type</strong> (<em>Required</em>): Type of the connection to Modebus.</li>
<li><strong>host</strong> (<em>Required</em>): The IP address of your router, eg. 192.168.1.1.</li>
<li><strong>port</strong> (<em>Required</em>): The port for the comminication.</li>
</ul>
<p>For a serial connection:</p>
<div class="highlighter-coderay"><div class="CodeRay">
<div class="code"><pre><span class="comment"># Example configuration.yaml entry</span>
<span class="key">modbus</span>:
<span class="key">type</span>: <span class="string"><span class="content">serial</span></span>
<span class="key">method</span>: <span class="string"><span class="content">rtu</span></span>
<span class="key">port</span>: <span class="string"><span class="content">/dev/ttyUSB0</span></span>
<span class="key">baudrate</span>: <span class="string"><span class="content">9600</span></span>
<span class="key">stopbits</span>: <span class="string"><span class="content">1</span></span>
<span class="key">bytesize</span>: <span class="string"><span class="content">8</span></span>
<span class="key">parity</span>: <span class="string"><span class="content">N</span></span>
</pre></div>
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</div>
<p>Configuration variables:</p>
<ul>
<li><strong>type</strong> (<em>Required</em>): Type of the connection to Modebus.</li>
<li><strong>method</strong> (<em>Required</em>): Method of the connection to Modbus.</li>
<li><strong>port</strong> (<em>Required</em>): The port where your Modbus device is connected to your Home Assistant host.</li>
<li><strong>baudrate</strong> (<em>Required</em>): The speed for the serial connection.</li>
<li><strong>stopbits</strong> (<em>Required</em>): The stopbits for the serial connection.</li>
<li><strong>bytesize</strong> (<em>Required</em>): The bytesize for the serial connection.</li>
<li><strong>parity</strong> (<em>Required</em>): The parity for the serial connection.</li>
</ul>
<h2><a class="title-link" name="building-on-top-of-modbus" href="#building-on-top-of-modbus"></a> Building on top of Modbus</h2>
<ul>
<li><a href="/components/sensor.modbus/">Modbus Sensor</a></li>
<li><a href="/components/switch.modbus/">Modbus Switch</a></li>
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Introduced in release: pre 0.7
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<h1 class='title delta'>Related components</h1>
<ul class='divided'>
<li><a href='/components/sensor.modbus/'>
Modbus Sensor
</a></li>
<li><a href='/components/switch.modbus/'>
Modbus Switch
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