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<!-- Attention authors: Do not edit directly. Please add your changes to the appropriate source repository -->
<h1 id="iec-62056-21-meter-binding">IEC 62056-21 Meter Binding</h1>
<p>This binding is used to communicate to metering devices supporting serial communication according IEC 62056-21 mode C master. It can be used to read metering data from slaves such as gas, water, heat, or electricity meters.</p>
<p>For further information read Wiki page of <a href="http://en.wikipedia.org/wiki/IEC_62056#IEC_62056-21">IEC 62056-21</a>.</p>
<p>Information received from the meter device are structured according IEC 62056-6-1:2013, Object identification system (OBIS). For further information read Wiki page of <a href="http://de.wikipedia.org/wiki/OBIS-Kennzahlen">OBIS (“Object Identification System”)</a>.</p>
<h2 id="binding-configuration">Binding Configuration</h2>
<p>This binding can be configured in the file <code class="highlighter-rouge">services/iec6205621meter.cfg</code>. The configuration allows the definition of multiple meter devices.</p>
<table>
<thead>
<tr>
<th>Property</th>
<th>Default</th>
<th style="text-align: center">Required</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code class="highlighter-rouge"><meter-id1></code>.serialPort</td>
<td> </td>
<td style="text-align: center">Yes</td>
<td>the serial port to use for connecting to the metering device e.g. COM1 for Windows and /dev/ttyS0 or /dev/ttyUSB0 for Linux</td>
</tr>
<tr>
<td><code class="highlighter-rouge"><meter-id1></code>.baudRateChangeDelay</td>
<td>0</td>
<td style="text-align: center">No</td>
<td>Delay of baud rate change in ms. Default is 0. USB to serial converters often require a delay of up to 250ms</td>
</tr>
<tr>
<td><code class="highlighter-rouge"><meter-id1></code>.echoHandling</td>
<td>true</td>
<td style="text-align: center">No</td>
<td>Enable handling of echos caused by some optical tranceivers</td>
</tr>
<tr>
<td>refresh</td>
<td>600</td>
<td style="text-align: center">No</td>
<td>Perform a module status query every <code class="highlighter-rouge">refresh</code> seconds</td>
</tr>
</tbody>
</table>
<p>NOTE: the <code class="highlighter-rouge"><meter-id1></code> will be used in both the binding item configs and the action calls to defined which of your meter devices is connected to the item.</p>
<h2 id="item-configuration">Item Configuration</h2>
<p>The syntax of an item configuration is shown in the following line in general:</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>iec6205621meter="<meter-id>;<OBIS>"
</code></pre></div></div>
<p>Where <code class="highlighter-rouge"><meter-id></code> matches one of the IDs defined in your <code class="highlighter-rouge">services/iec6205621meter.cfg</code> file.</p>
<p>If you do not know the available OBIS on your meter device, you can probably find them on the local HMI of you meter device. Please review you manual of the meter device or read the instruction of your utility.</p>
<p>You can also start openHAB in debug mode, the binding will then dump all available OBIS it receives from the meter device in the osgi console.</p>
<h3 id="examples">Examples</h3>
<h4 id="items">Items</h4>
<p>Below is an example representing the current energy counter tarif values as numeric items.</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>/* IEC 62056-21 Meter data */
Number Tarif_Period "Chart Period"
Number Tarif1 "High price tarif [%d kwh]" (gEnergy) { iec6205621meter="meter1;1.8.1" }
Number Tarif2 "Low price tarif [%d kwh]" (gEnergy) { iec6205621meter="meter1;1.8.2" }
Number ActualEnergyConsumption "Actual energy consumption [%.2f KW]" (gEnergy) { iec6205621meter="meter1;16.7" }
</code></pre></div></div>
<h4 id="rules">Rules</h4>
<p>In order to calculate the daily accumulated energy consumption, below item and script will allow you to present a chart in your sitemap.</p>
<p>First create the necessary items:</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>Number Tarif1Today "Daily Consumption High Price" (gEnergieConsumption)
Number Tarif2Today "Daily Consumption Low Price" (gEnergieConsumption)
</code></pre></div></div>
<p>Add the following to your rules:</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>rule "Energy chart"
when
Item Tarif1 changed or
Item Tarif2 changed
then
var Number tmp
var Number stopTarif1
var Number stopTarif2
var Number startTarif1
var Number startTarif2
if (Tarif1.state instanceof DecimalType && Tarif2.state instanceof DecimalType) {
stopTarif1 = Tarif1.maximumSince(now.toDateMidnight).state as DecimalType
stopTarif2 = Tarif2.maximumSince(now.toDateMidnight).state as DecimalType
//Today
startTarif1 = Tarif1.minimumSince(now.toDateMidnight).state as DecimalType
startTarif2 = Tarif2.minimumSince(now.toDateMidnight).state as DecimalType
tmp = stopTarif1 - startTarif1
postUpdate(Tarif1Today, tmp)
tmp = stopTarif2 - startTarif2
postUpdate(Tarif2Today, tmp)
}
end
</code></pre></div></div>
<p>Next, add below Frame to your sitemap:</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>Frame label="Energie" {
Text item=Tarif1 icon="energy" {
Frame {
Text item=Tarif1
Text item=Tarif2
Chart item=gEnergieConsumption period=D refresh=600
Chart item=gEnergieConsumption period=W refresh=3600
}
Text item=ActualEnergyConsumption icon="energy" {
Frame {
Text item=ActualEnergyConsumption
Switch item=ActualEnergyConsumption_Chart_Perdiod label="Period" mappings=[0="Hour", 1="Day", 2="Week"]
Chart item=ActualEnergyConsumption period=h visibility=[ActualEnergyConsumption_Period==0, ActualUsage_Chart_Period==Uninitialized ]
Chart item=ActualEnergyConsumption period=D visibility=[ActualEnergyConsumption_Chart_Period==1]
Chart item=ActualEnergyConsumption period=W visibility=[ActualEnergyConsumption_Chart_Period==2]
}
}
}
</code></pre></div></div>
<h2 id="tested-hardware">Tested Hardware</h2>
<p>The binding has been successfully tested with below hardware configuration:</p>
<ul>
<li>Landis & Gyr meter <a href="http://www.landisgyr.ch/product/landisgyr-zmd120ar/">ZMD120AR</a> connected with <a href="http://wiki.volkszaehler.org/hardware/controllers/ir-schreib-lesekopf">IR-Reader RS232</a> from open hardware project in <a href="http://volkszaehler.org/">volkszaehler</a></li>
<li>Landis & Gyr meter <a href="http://www.landisgyr.ch/product/landisgyr-e350-electricity-meter-new-generation/">E350</a> connected with <a href="http://wiki.volkszaehler.org/hardware/controllers/ir-schreib-lesekopf">IR-Reader RS232</a> from open hardware project in <a href="http://volkszaehler.org/">volkszaehler</a></li>
<li>Landis & Gyr meter connected the <a href="http://wiki.volkszaehler.org/hardware/controllers/ir-schreib-lesekopf-usb-ausgang">IR-Reader USB</a> from open hardware project in <a href="http://volkszaehler.org/">volkszaehler</a></li>
</ul>
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