py_ext: rework logic CSV reader FB output refresh logic.
Saving with CSV write FB now triggers CSV read FBs to refresh outputs immediately.
<?xml version='1.0' encoding='utf-8'?>
<project xmlns:ns1="http://www.plcopen.org/xml/tc6_0201" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.plcopen.org/xml/tc6_0201">
<fileHeader companyName="Unknown" productName="Unnamed" productVersion="1" creationDateTime="2019-08-06T14:23:42"/>
<contentHeader name="Unnamed" modificationDateTime="2022-08-23T09:33:50">
<coordinateInfo>
<fbd>
<scaling x="5" y="5"/>
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<ld>
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<sfc>
<scaling x="0" y="0"/>
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</contentHeader>
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<interface>
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<variable name="var0">
<type>
<derived name="HMI_INT"/>
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<variable name="var1">
<type>
<derived name="HMI_INT"/>
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<body>
<FBD>
<inVariable localId="5" executionOrderId="0" height="30" width="125" negated="false">
<position x="445" y="65"/>
<connectionPointOut>
<relPosition x="125" y="15"/>
</connectionPointOut>
<expression>var0</expression>
</inVariable>
<outVariable localId="10" executionOrderId="0" height="25" width="85" negated="false">
<position x="710" y="105"/>
<connectionPointIn>
<relPosition x="0" y="10"/>
<connection refLocalId="5">
<position x="710" y="115"/>
<position x="640" y="115"/>
<position x="640" y="80"/>
<position x="570" y="80"/>
</connection>
</connectionPointIn>
<expression>var1</expression>
</outVariable>
</FBD>
</body>
</pou>
</pous>
</types>
<instances>
<configurations>
<configuration name="config">
<resource name="resource1">
<task name="task0" priority="0" interval="T#20ms">
<pouInstance name="instance0" typeName="MainStuff"/>
</task>
</resource>
</configuration>
</configurations>
</instances>
</project>