fix bug with TextViewer instance in debug mode, appears after transferring new program on PLC
TextViewer isn't able to display debug values, so calling for this class SubscribeAllDataConsumers method causes error
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<project xmlns="http://www.plcopen.org/xml/tc6_0201" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xhtml="http://www.w3.org/1999/xhtml" xsi:schemaLocation="http://www.plcopen.org/xml/tc6_0201">
<fileHeader companyName="Beremiz" productName="Beremiz" productVersion="1" creationDateTime="2012-09-12T23:30:19"/>
<contentHeader name="Wiimote example" modificationDateTime="2017-06-06T13:10:31">
<coordinateInfo>
<fbd>
<scaling x="5" y="5"/>
</fbd>
<ld>
<scaling x="0" y="0"/>
</ld>
<sfc>
<scaling x="0" y="0"/>
</sfc>
</coordinateInfo>
</contentHeader>
<types>
<dataTypes/>
<pous>
<pou name="main" pouType="program">
<interface>
<localVars>
<variable name="x">
<type>
<INT/>
</type>
</variable>
<variable name="y">
<type>
<INT/>
</type>
</variable>
<variable name="a">
<type>
<INT/>
</type>
</variable>
<variable name="b">
<type>
<INT/>
</type>
</variable>
<variable name="c">
<type>
<INT/>
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<variable name="b1">
<type>
<WORD/>
</type>
</variable>
<variable name="b0">
<type>
<WORD/>
</type>
</variable>
</localVars>
<externalVars>
<variable name="WiiNunchuckStickX">
<type>
<INT/>
</type>
</variable>
<variable name="WiiNunchuckStickY">
<type>
<INT/>
</type>
</variable>
<variable name="WiiNunchuckButtons">
<type>
<WORD/>
</type>
</variable>
<variable name="WiiButtons">
<type>
<WORD/>
</type>
</variable>
<variable name="WiiNunchuckAccX">
<type>
<INT/>
</type>
</variable>
<variable name="WiiNunchuckAccY">
<type>
<INT/>
</type>
</variable>
<variable name="WiiNunchuckAccZ">
<type>
<INT/>
</type>
</variable>
</externalVars>
</interface>
<body>
<FBD>
<outVariable localId="1" height="30" width="20">
<position x="345" y="40"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="3">
<position x="345" y="55"/>
<position x="295" y="55"/>
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<expression>x</expression>
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<inVariable localId="3" height="30" width="150">
<position x="145" y="40"/>
<connectionPointOut>
<relPosition x="150" y="15"/>
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<expression>WiiNunchuckStickX</expression>
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<inVariable localId="4" height="30" width="150">
<position x="145" y="100"/>
<connectionPointOut>
<relPosition x="150" y="15"/>
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<expression>WiiNunchuckStickY</expression>
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<position x="115" y="175"/>
<connectionPointOut>
<relPosition x="155" y="15"/>
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<expression>WiiNunchuckButtons</expression>
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<inVariable localId="6" height="30" width="90">
<position x="180" y="225"/>
<connectionPointOut>
<relPosition x="90" y="15"/>
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<expression>WiiButtons</expression>
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<position x="345" y="100"/>
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<position x="295" y="115"/>
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<expression>y</expression>
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<outVariable localId="9" height="30" width="30">
<position x="345" y="175"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="5">
<position x="345" y="190"/>
<position x="270" y="190"/>
</connection>
</connectionPointIn>
<expression>b1</expression>
</outVariable>
<outVariable localId="10" height="30" width="30">
<position x="345" y="225"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="6">
<position x="345" y="240"/>
<position x="270" y="240"/>
</connection>
</connectionPointIn>
<expression>b0</expression>
</outVariable>
<inVariable localId="11" height="30" width="135">
<position x="135" y="295"/>
<connectionPointOut>
<relPosition x="135" y="15"/>
</connectionPointOut>
<expression>WiiNunchuckAccX</expression>
</inVariable>
<inVariable localId="12" height="30" width="135">
<position x="135" y="340"/>
<connectionPointOut>
<relPosition x="135" y="15"/>
</connectionPointOut>
<expression>WiiNunchuckAccY</expression>
</inVariable>
<inVariable localId="13" height="30" width="130">
<position x="140" y="385"/>
<connectionPointOut>
<relPosition x="130" y="15"/>
</connectionPointOut>
<expression>WiiNunchuckAccZ</expression>
</inVariable>
<outVariable localId="14" height="30" width="20">
<position x="345" y="295"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="11">
<position x="345" y="310"/>
<position x="270" y="310"/>
</connection>
</connectionPointIn>
<expression>a</expression>
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<outVariable localId="15" height="30" width="20">
<position x="345" y="340"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="12">
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<position x="270" y="355"/>
</connection>
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<expression>b</expression>
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<outVariable localId="16" height="30" width="20">
<position x="345" y="385"/>
<connectionPointIn>
<relPosition x="0" y="15"/>
<connection refLocalId="13">
<position x="345" y="400"/>
<position x="270" y="400"/>
</connection>
</connectionPointIn>
<expression>c</expression>
</outVariable>
<comment localId="17" height="125" width="500">
<position x="450" y="30"/>
<content>
<xhtml:p><![CDATA[This example shows interaction of PLC program with Nintendo Wii Remote controller.
To work this example requires python-cwiid library to be installed.]]></xhtml:p>
</content>
</comment>
</FBD>
</body>
<documentation>
<xhtml:p><![CDATA[]]></xhtml:p>
</documentation>
</pou>
</pous>
</types>
<instances>
<configurations>
<configuration name="config">
<resource name="resource1">
<task name="tsk1" interval="T#1ms" priority="0">
<pouInstance name="inst1" typeName="main"/>
</task>
</resource>
</configuration>
</configurations>
</instances>
</project>