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Site updated at 2018-01-28 22:02:31 UTC

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components/sensor.dsmr/index.html
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<h3><a class="title-link" name="technical-overview" href="#technical-overview"></a> Technical overview</h3>
<p>DSMR is a standard to which Dutch smartmeters must comply. It specifies that the smartmeter must send out a ‘telegram’ every 10 seconds over a serial port.</p>
<p>The contents of this telegram differ between version but they generally consist of lines with ‘obis’ (Object Identification System, a numerical ID for a value) followed with the value and unit.</p>
<p>This module sets up a asynchronous reading loop using the <code class="highlighter-rouge">dsmr_parser</code> module which waits for a complete telegram, parser it and puts it on an async queue as a dictionary of <code class="highlighter-rouge">obis</code>/object mapping. The numeric value and unit of each value can be read from the objects attributes. Because the <code class="highlighter-rouge">obis</code> are know for each DSMR version the Entities for this component are create during bootstrap.</p>
<p>This module sets up an asynchronous reading loop using the <code class="highlighter-rouge">dsmr_parser</code> module which waits for a complete telegram, parser it and puts it on an async queue as a dictionary of <code class="highlighter-rouge">obis</code>/object mapping. The numeric value and unit of each value can be read from the objects attributes. Because the <code class="highlighter-rouge">obis</code> are know for each DSMR version the Entities for this component are create during bootstrap.</p>
<p>Another loop (DSMR class) is setup which reads the telegram queue, stores/caches the latest telegram and notifies the Entities that the telegram has been updated.</p>
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