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Runtime/win32: no sys.stdout with pythonw.exe
authorEdouard Tisserant <edouard.tisserant@gmail.com>
Thu, 28 Sep 2023 17:56:03 +0200
changeset 3843 832bcf1b5b60
parent 3842 3922024076b3
child 3844 58a331434e92
Runtime/win32: no sys.stdout with pythonw.exe
Beremiz_service.py file | annotate | diff | comparison | revisions
exemples/python/plc.xml file | annotate | diff | comparison | revisions
exemples/python/python@py_ext/pyfile.xml file | annotate | diff | comparison | revisions
runtime/PLCObject.py file | annotate | diff | comparison | revisions
runtime/PyroServer.py file | annotate | diff | comparison | revisions 
--- a/Beremiz_service.py	Mon Aug 07 18:17:12 2023 +0200
+++ b/Beremiz_service.py	Thu Sep 28 17:56:03 2023 +0200
@@ -558,8 +558,9 @@
 
     # Beremiz IDE detects LOCAL:// runtime is ready by looking
     # for self.workdir in the daemon's stdout.
-    sys.stdout.write(_("Current working directory :") + WorkingDir + "\n")
-    sys.stdout.flush()
+    if sys.stdout:
+        sys.stdout.write(_("Current working directory :") + WorkingDir + "\n")
+        sys.stdout.flush()
 
     runtime.GetPLCObjectSingleton().AutoLoad(autostart)
 
--- a/exemples/python/plc.xml	Mon Aug 07 18:17:12 2023 +0200
+++ b/exemples/python/plc.xml	Thu Sep 28 17:56:03 2023 +0200
@@ -1,1678 +1,1678 @@
-<?xml version='1.0' encoding='utf-8'?>
-<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="" productName="Beremiz" productVersion="0.0" creationDateTime="2008-12-14T16:21:19" contentDescription="This example shows many features in Beremiz:&#10;&#10;   1. How to implement python extensions.&#10;   2. How to implement basic C extension.&#10;   3. How to use C code in IEC POUs.&#10;   4. How to call C functions from python code.&#10;   5. How to avoid race conditions between IEC, C and python code.&#10;   6. How to convert betweet different IEC types.&#10;"/>
-  <contentHeader name="Beremiz Python Support Tests" modificationDateTime="2022-07-03T16:04:31">
-    <coordinateInfo>
-      <pageSize x="1024" y="1024"/>
-      <fbd>
-        <scaling x="5" y="5"/>
-      </fbd>
-      <ld>
-        <scaling x="5" y="5"/>
-      </ld>
-      <sfc>
-        <scaling x="5" y="5"/>
-      </sfc>
-    </coordinateInfo>
-  </contentHeader>
-  <types>
-    <dataTypes>
-      <dataType name="CPLX_TYPE">
-        <baseType>
-          <struct>
-            <variable name="FIRSTBYTE">
-              <type>
-                <SINT/>
-              </type>
-            </variable>
-            <variable name="SECONDBYTE">
-              <type>
-                <SINT/>
-              </type>
-            </variable>
-          </struct>
-        </baseType>
-      </dataType>
-      <dataType name="StateMachine">
-        <baseType>
-          <enum>
-            <values>
-              <value name="STANDBY"/>
-              <value name="START"/>
-              <value name="STOP"/>
-            </values>
-          </enum>
-        </baseType>
-      </dataType>
-      <dataType name="datatype0">
-        <baseType>
-          <BOOL/>
-        </baseType>
-      </dataType>
-      <dataType name="blups">
-        <baseType>
-          <array>
-            <dimension lower="0" upper="31"/>
-            <baseType>
-              <derived name="CPLX_TYPE"/>
-            </baseType>
-          </array>
-        </baseType>
-      </dataType>
-    </dataTypes>
-    <pous>
-      <pou name="main_pytest" pouType="program">
-        <interface>
-          <localVars>
-            <variable name="mux1_sel">
-              <type>
-                <INT/>
-              </type>
-              <initialValue>
-                <simpleValue value="3"/>
-              </initialValue>
-              <documentation>
-                <xhtml:p><![CDATA[blah]]></xhtml:p>
-              </documentation>
-            </variable>
-            <variable name="mux2_sel">
-              <type>
-                <INT/>
-              </type>
-              <initialValue>
-                <simpleValue value="3"/>
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-            </variable>
-            <variable name="pytest_var1">
-              <type>
-                <string/>
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-            </variable>
-            <variable name="fefvsd">
-              <type>
-                <derived name="datatype0"/>
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-                <derived name="python_eval"/>
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-            </variable>
-            <variable name="Block3">
-              <type>
-                <derived name="python_eval"/>
-              </type>
-            </variable>
-            <variable name="pytest_var3">
-              <type>
-                <BOOL/>
-              </type>
-            </variable>
-            <variable name="FromC">
-              <type>
-                <SINT/>
-              </type>
-            </variable>
-            <variable name="C_Pragma0">
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-                <derived name="C_Pragma"/>
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-            </variable>
-          </localVars>
-          <externalVars>
-            <variable name="TestInput">
-              <type>
-                <SINT/>
-              </type>
-            </variable>
-            <variable name="TestOutput">
-              <type>
-                <SINT/>
-              </type>
-            </variable>
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-          <localVars>
-            <variable name="FromInput">
-              <type>
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-            </variable>
-            <variable name="Test_BCD">
-              <type>
-                <WORD/>
-              </type>
-              <initialValue>
-                <simpleValue value="151"/>
-              </initialValue>
-            </variable>
-            <variable name="Test_BCD_WRONG">
-              <type>
-                <WORD/>
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-                <simpleValue value="154"/>
-              </initialValue>
-            </variable>
-            <variable name="Test_BCD_CONVERTED">
-              <type>
-                <BOOL/>
-              </type>
-            </variable>
-            <variable name="Test_BCD_RESULT">
-              <type>
-                <UINT/>
-              </type>
-            </variable>
-            <variable name="Test_BCD_WRONG_RESULT">
-              <type>
-                <UINT/>
-              </type>
-            </variable>
-            <variable name="Test_DT">
-              <type>
-                <DT/>
-              </type>
-              <initialValue>
-                <simpleValue value="DT#2013-02-23-22:35:46"/>
-              </initialValue>
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-                <TOD/>
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-            </variable>
-            <variable name="Test_TOD_STRING">
-              <type>
-                <string/>
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-              <type>
-                <DATE/>
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-              <type>
-                <string/>
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-              <type>
-                <INT/>
-              </type>
-            </variable>
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-              <type>
-                <INT/>
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-            <variable name="Grumpf">
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-          </localVars>
-          <externalVars>
-            <variable name="SomeVarName">
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-            </variable>
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-        <body>
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-                <xhtml:p><![CDATA[This part of the example test that, despite of 2T period clock stimulating TRIG pin of pyth_eval blocks, blocks keep executing one after the other, in respect of execution order.]]></xhtml:p>
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-            <block localId="26" width="80" height="45" typeName="C_Pragma" instanceName="C_Pragma0" executionOrderId="0">
-              <position x="185" y="1060"/>
-              <inputVariables>
-                <variable formalParameter="IN">
-                  <connectionPointIn>
-                    <relPosition x="0" y="30"/>
-                    <connection refLocalId="1">
-                      <position x="185" y="1090"/>
-                      <position x="135" y="1090"/>
-                    </connection>
-                  </connectionPointIn>
-                </variable>
-              </inputVariables>
-              <inOutVariables/>
-              <outputVariables>
-                <variable formalParameter="OUT">
-                  <connectionPointOut>
-                    <relPosition x="80" y="30"/>
-                  </connectionPointOut>
-                </variable>
-              </outputVariables>
-            </block>
-            <inVariable localId="27" height="30" width="90" executionOrderId="0" negated="false">
-              <position x="100" y="1190"/>
-              <connectionPointOut>
-                <relPosition x="90" y="15"/>
-              </connectionPointOut>
-              <expression>TestInput</expression>
-            </inVariable>
-            <outVariable localId="28" height="30" width="105" executionOrderId="0" negated="false">
-              <position x="195" y="1125"/>
-              <connectionPointIn>
-                <relPosition x="0" y="15"/>
-                <connection refLocalId="2">
-                  <position x="195" y="1140"/>
-                  <position x="140" y="1140"/>
-                </connection>
-              </connectionPointIn>
-              <expression>TestOutput</expression>
-            </outVariable>
-            <outVariable localId="29" height="30" width="85" executionOrderId="0" negated="false">
-              <position x="215" y="1190"/>
-              <connectionPointIn>
-                <relPosition x="0" y="15"/>
-                <connection refLocalId="27">
-                  <position x="215" y="1205"/>
-                  <position x="190" y="1205"/>
-                </connection>
-              </connectionPointIn>
-              <expression>FromInput</expression>
-            </outVariable>
-            <inVariable localId="2" height="30" width="30" executionOrderId="0" negated="false">
-              <position x="110" y="1125"/>
-              <connectionPointOut>
-                <relPosition x="30" y="15"/>
-              </connectionPointOut>
-              <expression>10</expression>
-            </inVariable>
-            <comment localId="30" height="105" width="465">
-              <position x="50" y="925"/>
-              <content>
-                <xhtml:p><![CDATA[You will be ready to use beremiz with C and Python when you will understand why "FromInput" is equal  to 75.
-Happy hacking! ]]></xhtml:p>
-              </content>
-            </comment>
-            <comment localId="6" height="80" width="345">
-              <position x="295" y="630"/>
-              <content>
-                <xhtml:p><![CDATA[Prints FBID to stdout of PLC runtime. FBID is a unique reference to py_eval instance.]]></xhtml:p>
-              </content>
-            </comment>
-            <comment localId="10" height="85" width="345">
-              <position x="295" y="770"/>
-              <content>
-                <xhtml:p><![CDATA[Simple_C_Call is declared in C_File "1.x:c_code". See python ctypes manual for details on typing.]]></xhtml:p>
-              </content>
-            </comment>
-            <comment localId="32" height="145" width="235">
-              <position x="25" y="505"/>
-              <content>
-                <xhtml:p><![CDATA[Fast clock, at least faster that sleep(1). See what happens when python takes time to answer : PLC continues.]]></xhtml:p>
-              </content>
-            </comment>
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-              <expression>Test_BCD_RESULT</expression>
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-                </variable>
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-                  </connectionPointOut>
-                </variable>
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-            </block>
-            <block localId="38" width="195" height="45" typeName="DATE_AND_TIME_TO_DATE" executionOrderId="0">
-              <position x="265" y="1834"/>
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-                </variable>
-              </inputVariables>
-              <inOutVariables/>
-              <outputVariables>
-                <variable formalParameter="OUT">
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-                  </connectionPointOut>
-                </variable>
-              </outputVariables>
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-              <expression>Test_Date</expression>
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-                </connection>
-              </connectionPointIn>
-              <expression>Test_Bool</expression>
-            </outVariable>
-            <block localId="44" width="135" height="45" typeName="STRING_TO_BOOL" executionOrderId="0">
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-              <inputVariables>
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-              </inputVariables>
-              <inOutVariables/>
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-                <variable formalParameter="OUT">
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-                  </connectionPointOut>
-                </variable>
-              </outputVariables>
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-                <variable formalParameter="OUT">
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-              </connectionPointOut>
-              <expression>Global_RS.Q1</expression>
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-              <position x="240" y="2255"/>
-              <inputVariables>
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-                      <position x="180" y="2325"/>
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-                </variable>
-              </inputVariables>
-              <inOutVariables/>
-              <outputVariables>
-                <variable formalParameter="OUT">
-                  <connectionPointOut>
-                    <relPosition x="70" y="35"/>
-                  </connectionPointOut>
-                </variable>
-              </outputVariables>
-            </block>
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-              <connectionPointOut>
-                <relPosition x="105" y="15"/>
-              </connectionPointOut>
-              <expression>BOOL#TRUE</expression>
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-              <expression>Global_RS.S</expression>
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-              </connectionPointOut>
-              <expression>Global_RS.Q1</expression>
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-              <position x="240" y="2370"/>
-              <inputVariables>
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-                      <position x="180" y="2405"/>
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-                </variable>
-                <variable formalParameter="IN2">
-                  <connectionPointIn>
-                    <relPosition x="0" y="70"/>
-                    <connection refLocalId="48">
-                      <position x="240" y="2440"/>
-                      <position x="180" y="2440"/>
-                    </connection>
-                  </connectionPointIn>
-                </variable>
-              </inputVariables>
-              <inOutVariables/>
-              <outputVariables>
-                <variable formalParameter="OUT">
-                  <connectionPointOut>
-                    <relPosition x="70" y="35"/>
-                  </connectionPointOut>
-                </variable>
-              </outputVariables>
-            </block>
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-              <position x="75" y="2425"/>
-              <connectionPointOut>
-                <relPosition x="105" y="15"/>
-              </connectionPointOut>
-              <expression>BOOL#FALSE</expression>
-            </inVariable>
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-              <connectionPointIn>
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-                  <position x="855" y="1790"/>
-                </connection>
-              </connectionPointIn>
-              <expression>Test_TOD_STRING</expression>
-            </outVariable>
-            <block localId="55" width="125" height="45" typeName="TOD_TO_STRING" executionOrderId="0">
-              <position x="730" y="1759"/>
-              <inputVariables>
-                <variable formalParameter="IN">
-                  <connectionPointIn>
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-                  </connectionPointIn>
-                </variable>
-              </inputVariables>
-              <inOutVariables/>
-              <outputVariables>
-                <variable formalParameter="OUT">
-                  <connectionPointOut>
-                    <relPosition x="125" y="31"/>
-                  </connectionPointOut>
-                </variable>
-              </outputVariables>
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-              <position x="760" y="1170"/>
-              <inputVariables>
-                <variable formalParameter="LocalVar0">
-                  <connectionPointIn>
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-                    <connection refLocalId="62">
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-                      <position x="723" y="1200"/>
-                    </connection>
-                  </connectionPointIn>
-                </variable>
-              </inputVariables>
-              <inOutVariables/>
-              <outputVariables>
-                <variable formalParameter="OUT">
-                  <connectionPointOut>
-                    <relPosition x="111" y="30"/>
-                  </connectionPointOut>
-                </variable>
-              </outputVariables>
-            </block>
-            <inVariable localId="62" executionOrderId="0" height="30" width="58" negated="false">
-              <position x="665" y="1185"/>
-              <connectionPointOut>
-                <relPosition x="58" y="15"/>
-              </connectionPointOut>
-              <expression>fefvsd</expression>
-            </inVariable>
-            <outVariable localId="63" executionOrderId="0" height="30" width="58" negated="false">
-              <position x="905" y="1185"/>
-              <connectionPointIn>
-                <relPosition x="0" y="15"/>
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-                  <position x="905" y="1200"/>
-                  <position x="871" y="1200"/>
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-              </connectionPointIn>
-              <expression>fefvsd</expression>
-            </outVariable>
-            <comment localId="53" height="80" width="420">
-              <position x="75" y="2160"/>
-              <content>
-                <xhtml:p><![CDATA[Shows global variables access from resource configuration (res_pytest) and from project's configuration.]]></xhtml:p>
-              </content>
-            </comment>
-            <inVariable localId="18" height="30" width="74" executionOrderId="0" negated="false">
-              <position x="986" y="795"/>
-              <connectionPointOut>
-                <relPosition x="74" y="15"/>
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-              <expression>mux2_sel</expression>
-            </inVariable>
-            <comment localId="60" height="45" width="930">
-              <position x="60" y="1480"/>
-              <content>
-                <xhtml:p><![CDATA[Here is shown how to convert values between different types (BCD, DT, TOD, STRING and others) using standard functions.]]></xhtml:p>
-              </content>
-            </comment>
-            <comment localId="64" height="55" width="300">
-              <position x="665" y="1095"/>
-              <content>
-                <xhtml:p><![CDATA[Example of usage of user-defined function.]]></xhtml:p>
-              </content>
-            </comment>
-            <comment localId="65" height="45" width="410">
-              <position x="55" y="1315"/>
-              <content>
-                <xhtml:p><![CDATA[Shows access variable defined in python extension. ]]></xhtml:p>
-              </content>
-            </comment>
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-              <position x="60" y="1685"/>
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-              </connectionPointOut>
-              <expression>Test_BCD_WRONG</expression>
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-              <position x="265" y="1620"/>
-              <inputVariables>
-                <variable formalParameter="EN">
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-                  </connectionPointIn>
-                </variable>
-                <variable formalParameter="IN">
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-                    <relPosition x="0" y="80"/>
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-                      <position x="265" y="1700"/>
-                      <position x="255" y="1700"/>
-                      <position x="255" y="1700"/>
-                      <position x="345" y="1700"/>
-                      <position x="345" y="1700"/>
-                      <position x="197" y="1700"/>
-                    </connection>
-                  </connectionPointIn>
-                </variable>
-              </inputVariables>
-              <inOutVariables/>
-              <outputVariables>
-                <variable formalParameter="ENO">
-                  <connectionPointOut>
-                    <relPosition x="106" y="40"/>
-                  </connectionPointOut>
-                </variable>
-                <variable formalParameter="OUT">
-                  <connectionPointOut>
-                    <relPosition x="106" y="80"/>
-                  </connectionPointOut>
-                </variable>
-              </outputVariables>
-            </block>
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-              <position x="580" y="1685"/>
-              <connectionPointIn>
-                <relPosition x="0" y="15"/>
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-                  <position x="371" y="1700"/>
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-              <expression>Test_BCD_WRONG_RESULT</expression>
-            </outVariable>
-            <comment localId="69" height="165" width="375">
-              <position x="795" y="1590"/>
-              <content>
-                <xhtml:p><![CDATA[Incorrect BCD number is not converted to UINT.
-
-151 (16#97) is good BCD number , but 
-154 (16#9A) is not.  
-
-Try this out and look at value of  Test_BCD_CONVERTED variable.
-
-
-]]></xhtml:p>
-              </content>
-            </comment>
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-              <expression>Test_BCD_CONVERTED</expression>
-            </outVariable>
-            <comment localId="71" height="215" width="680">
-              <position x="35" y="30"/>
-              <content>
-                <xhtml:p><![CDATA[This example shows many features in Beremiz:
-
-   1. How to implement python extensions.
-   2. How to implement basic C extension.
-   3. How to use C code in IEC POUs.
-   4. How to call C functions from python code.
-   5. How to avoid race conditions between IEC, C and python code.
-   6. How to convert betweet different IEC types.
-]]></xhtml:p>
-              </content>
-            </comment>
-            <outVariable localId="72" executionOrderId="0" height="30" width="60" negated="false">
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-                  <position x="1025" y="1995"/>
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-                      <position x="735" y="1960"/>
-                      <position x="735" y="1955"/>
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-                      <position x="760" y="1995"/>
-                      <position x="727" y="1995"/>
-                      <position x="727" y="1990"/>
-                      <position x="695" y="1990"/>
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-                  <position x="515" y="405"/>
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-              </connectionPointIn>
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-            <continuation name="Connection0" localId="82" height="30" width="130">
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-              <connectionPointOut>
-                <relPosition x="130" y="15"/>
-              </connectionPointOut>
-            </continuation>
-          </FBD>
-        </body>
-      </pou>
-      <pou name="C_Pragma" pouType="functionBlock">
-        <interface>
-          <outputVars>
-            <variable name="OUT">
-              <type>
-                <SINT/>
-              </type>
-            </variable>
-          </outputVars>
-          <inputVars>
-            <variable name="IN">
-              <type>
-                <SINT/>
-              </type>
-            </variable>
-          </inputVars>
-          <localVars>
-            <variable name="COORDS">
-              <type>
-                <array>
-                  <dimension lower="0" upper="5"/>
-                  <baseType>
-                    <SINT/>
-                  </baseType>
-                </array>
-              </type>
-              <initialValue>
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-                  <value>
-                    <simpleValue value="54"/>
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-                  <value>
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-                  </value>
-                  <value>
-                    <simpleValue value="59"/>
-                  </value>
-                </arrayValue>
-              </initialValue>
-            </variable>
-            <variable name="SMURF">
-              <type>
-                <derived name="CPLX_TYPE"/>
-              </type>
-            </variable>
-          </localVars>
-          <externalVars>
-            <variable name="Global_RS">
-              <type>
-                <derived name="RS"/>
-              </type>
-            </variable>
-            <variable name="Dudiduda">
-              <type>
-                <derived name="blups"/>
-              </type>
-            </variable>
-          </externalVars>
-        </interface>
-        <body>
-          <ST>
-            <xhtml:p><![CDATA[(* hereafter is a C pragma accessing FB interface in a clean way *)
-{{
-  char toPLC;
-  char fromPLC = GetFbVar(IN);
-  extern int PLC_C_Call(char, char *);
-  if(PLC_C_Call(fromPLC, &toPLC)){
-    SetFbVar(OUT, toPLC);
-  }
-  if(0){
-    /* that code demonstrate C access to complex types */
-    char somebyte = GetFbVar(COORDS, .table[3]);
-    SetFbVar(SMURF, somebyte, .FIRSTBYTE);
-    SetFbVar(COORDS, somebyte, .table[4]);
-  }
-}}
-(* If you do not use GetFbVar and SetFbVar macros, expect unexpected behaviour*)
-Global_RS();
-
-(* testing access to global struct array *)
-Dudiduda[2].FIRSTBYTE := 0;
-]]></xhtml:p>
-          </ST>
-        </body>
-      </pou>
-      <pou name="norm" pouType="function">
-        <interface>
-          <returnType>
-            <REAL/>
-          </returnType>
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-            <variable name="IN1">
-              <type>
-                <REAL/>
-              </type>
-            </variable>
-            <variable name="IN2">
-              <type>
-                <REAL/>
-              </type>
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-        </interface>
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-          <ST>
-            <xhtml:p><![CDATA[NORM := SQRT(IN1 * IN1 + IN2 * IN2);]]></xhtml:p>
-          </ST>
-        </body>
-      </pou>
-      <pou name="function0" pouType="function">
-        <interface>
-          <returnType>
-            <derived name="datatype0"/>
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-          <inputVars>
-            <variable name="LocalVar0">
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-                <derived name="datatype0"/>
-              </type>
-            </variable>
-          </inputVars>
-        </interface>
-        <body>
-          <ST>
-            <xhtml:p><![CDATA[function0 := LocalVar0;
-]]></xhtml:p>
-          </ST>
-        </body>
-      </pou>
-    </pous>
-  </types>
-  <instances>
-    <configurations>
-      <configuration name="config">
-        <resource name="res_pytest">
-          <task name="pytest_task" priority="0" interval="T#500ms"/>
-          <globalVars>
-            <variable name="TOTO">
-              <type>
-                <INT/>
-              </type>
-            </variable>
-          </globalVars>
-          <pouInstance name="pytest_instance" typeName="main_pytest"/>
-        </resource>
-        <globalVars>
-          <variable name="Global_RS">
-            <type>
-              <derived name="RS"/>
-            </type>
-          </variable>
-          <variable name="Dudiduda">
-            <type>
-              <derived name="blups"/>
-            </type>
-          </variable>
-          <variable name="TUTU">
-            <type>
-              <INT/>
-            </type>
-          </variable>
-        </globalVars>
-      </configuration>
-    </configurations>
-  </instances>
-</project>
+<?xml version='1.0' encoding='utf-8'?>
+<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="" productName="Beremiz" productVersion="0.0" creationDateTime="2008-12-14T16:21:19" contentDescription="This example shows many features in Beremiz:&#10;&#10;   1. How to implement python extensions.&#10;   2. How to implement basic C extension.&#10;   3. How to use C code in IEC POUs.&#10;   4. How to call C functions from python code.&#10;   5. How to avoid race conditions between IEC, C and python code.&#10;   6. How to convert betweet different IEC types.&#10;"/>
+  <contentHeader name="Beremiz Python Support Tests" modificationDateTime="2023-09-28T17:24:49">
+    <coordinateInfo>
+      <pageSize x="1024" y="1024"/>
+      <fbd>
+        <scaling x="5" y="5"/>
+      </fbd>
+      <ld>
+        <scaling x="5" y="5"/>
+      </ld>
+      <sfc>
+        <scaling x="5" y="5"/>
+      </sfc>
+    </coordinateInfo>
+  </contentHeader>
+  <types>
+    <dataTypes>
+      <dataType name="CPLX_TYPE">
+        <baseType>
+          <struct>
+            <variable name="FIRSTBYTE">
+              <type>
+                <SINT/>
+              </type>
+            </variable>
+            <variable name="SECONDBYTE">
+              <type>
+                <SINT/>
+              </type>
+            </variable>
+          </struct>
+        </baseType>
+      </dataType>
+      <dataType name="StateMachine">
+        <baseType>
+          <enum>
+            <values>
+              <value name="STANDBY"/>
+              <value name="START"/>
+              <value name="STOP"/>
+            </values>
+          </enum>
+        </baseType>
+      </dataType>
+      <dataType name="datatype0">
+        <baseType>
+          <BOOL/>
+        </baseType>
+      </dataType>
+      <dataType name="blups">
+        <baseType>
+          <array>
+            <dimension lower="0" upper="31"/>
+            <baseType>
+              <derived name="CPLX_TYPE"/>
+            </baseType>
+          </array>
+        </baseType>
+      </dataType>
+    </dataTypes>
+    <pous>
+      <pou name="main_pytest" pouType="program">
+        <interface>
+          <localVars>
+            <variable name="mux1_sel">
+              <type>
+                <INT/>
+              </type>
+              <initialValue>
+                <simpleValue value="3"/>
+              </initialValue>
+              <documentation>
+                <xhtml:p><![CDATA[blah]]></xhtml:p>
+              </documentation>
+            </variable>
+            <variable name="mux2_sel">
+              <type>
+                <INT/>
+              </type>
+              <initialValue>
+                <simpleValue value="3"/>
+              </initialValue>
+            </variable>
+            <variable name="pytest_var1">
+              <type>
+                <string/>
+              </type>
+            </variable>
+            <variable name="fefvsd">
+              <type>
+                <derived name="datatype0"/>
+              </type>
+            </variable>
+            <variable name="pytest_var2">
+              <type>
+                <BOOL/>
+              </type>
+            </variable>
+            <variable name="py1">
+              <type>
+                <derived name="python_eval"/>
+              </type>
+            </variable>
+            <variable name="Block1">
+              <type>
+                <derived name="python_eval"/>
+              </type>
+            </variable>
+            <variable name="Block2">
+              <type>
+                <derived name="python_eval"/>
+              </type>
+            </variable>
+            <variable name="Block3">
+              <type>
+                <derived name="python_eval"/>
+              </type>
+            </variable>
+            <variable name="pytest_var3">
+              <type>
+                <BOOL/>
+              </type>
+            </variable>
+            <variable name="FromC">
+              <type>
+                <SINT/>
+              </type>
+            </variable>
+            <variable name="C_Pragma0">
+              <type>
+                <derived name="C_Pragma"/>
+              </type>
+            </variable>
+          </localVars>
+          <externalVars>
+            <variable name="TestInput">
+              <type>
+                <SINT/>
+              </type>
+            </variable>
+            <variable name="TestOutput">
+              <type>
+                <SINT/>
+              </type>
+            </variable>
+          </externalVars>
+          <localVars>
+            <variable name="FromInput">
+              <type>
+                <SINT/>
+              </type>
+            </variable>
+            <variable name="Test_BCD">
+              <type>
+                <WORD/>
+              </type>
+              <initialValue>
+                <simpleValue value="151"/>
+              </initialValue>
+            </variable>
+            <variable name="Test_BCD_WRONG">
+              <type>
+                <WORD/>
+              </type>
+              <initialValue>
+                <simpleValue value="154"/>
+              </initialValue>
+            </variable>
+            <variable name="Test_BCD_CONVERTED">
+              <type>
+                <BOOL/>
+              </type>
+            </variable>
+            <variable name="Test_BCD_RESULT">
+              <type>
+                <UINT/>
+              </type>
+            </variable>
+            <variable name="Test_BCD_WRONG_RESULT">
+              <type>
+                <UINT/>
+              </type>
+            </variable>
+            <variable name="Test_DT">
+              <type>
+                <DT/>
+              </type>
+              <initialValue>
+                <simpleValue value="DT#2013-02-23-22:35:46"/>
+              </initialValue>
+            </variable>
+            <variable name="Test_TOD">
+              <type>
+                <TOD/>
+              </type>
+            </variable>
+            <variable name="Test_TOD_STRING">
+              <type>
+                <string/>
+              </type>
+            </variable>
+            <variable name="Test_Date">
+              <type>
+                <DATE/>
+              </type>
+            </variable>
+            <variable name="Test_String">
+              <type>
+                <string/>
+              </type>
+              <initialValue>
+                <simpleValue value="test"/>
+              </initialValue>
+            </variable>
+            <variable name="Test_Bool">
+              <type>
+                <BOOL/>
+              </type>
+            </variable>
+          </localVars>
+          <externalVars>
+            <variable name="Global_RS">
+              <type>
+                <derived name="RS"/>
+              </type>
+            </variable>
+            <variable name="TUTU">
+              <type>
+                <INT/>
+              </type>
+            </variable>
+            <variable name="TOTO">
+              <type>
+                <INT/>
+              </type>
+            </variable>
+            <variable name="Test_Python_Var">
+              <type>
+                <INT/>
+              </type>
+            </variable>
+            <variable name="Second_Python_Var">
+              <type>
+                <INT/>
+              </type>
+            </variable>
+            <variable name="Grumpf">
+              <type>
+                <string/>
+              </type>
+            </variable>
+          </externalVars>
+          <localVars>
+            <variable name="RTC0">
+              <type>
+                <derived name="RTC"/>
+              </type>
+            </variable>
+          </localVars>
+          <externalVars>
+            <variable name="SomeVarName">
+              <type>
+                <DINT/>
+              </type>
+            </variable>
+          </externalVars>
+        </interface>
+        <body>
+          <FBD>
+            <inVariable localId="4" height="30" width="315" executionOrderId="0" negated="false">
+              <position x="200" y="390"/>
+              <connectionPointOut>
+                <relPosition x="315" y="15"/>
+              </connectionPointOut>
+              <expression>'MyPrintFunction("Hello world\n")'</expression>
+            </inVariable>
+            <block localId="5" width="125" height="80" typeName="python_eval" instanceName="py1" executionOrderId="0">
+              <position x="686" y="400"/>
+              <inputVariables>
+                <variable formalParameter="TRIG">
+                  <connectionPointIn>
+                    <relPosition x="0" y="35"/>
+                    <connection refLocalId="7" formalParameter="OUT">
+                      <position x="686" y="435"/>
+                      <position x="285" y="435"/>
+                      <position x="285" y="480"/>
+                      <position x="250" y="480"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+                <variable formalParameter="CODE">
+                  <connectionPointIn>
+                    <relPosition x="0" y="65"/>
+                    <connection refLocalId="80" formalParameter="OUT">
+                      <position x="686" y="465"/>
+                      <position x="653" y="465"/>
+                      <position x="653" y="485"/>
+                      <position x="630" y="485"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="ACK">
+                  <connectionPointOut>
+                    <relPosition x="125" y="35"/>
+                  </connectionPointOut>
+                </variable>
+                <variable formalParameter="RESULT">
+                  <connectionPointOut>
+                    <relPosition x="125" y="65"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <block localId="7" width="70" height="45" typeName="NOT" executionOrderId="0">
+              <position x="180" y="450"/>
+              <inputVariables>
+                <variable formalParameter="IN">
+                  <connectionPointIn>
+                    <relPosition x="0" y="30"/>
+                    <connection refLocalId="3">
+                      <position x="180" y="480"/>
+                      <position x="155" y="480"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="OUT">
+                  <connectionPointOut>
+                    <relPosition x="70" y="30"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <inOutVariable localId="3" height="30" width="120" executionOrderId="0" negatedOut="false" negatedIn="false">
+              <position x="35" y="465"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
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+                  <position x="270" y="480"/>
+                  <position x="250" y="480"/>
+                </connection>
+              </connectionPointIn>
+              <connectionPointOut>
+                <relPosition x="120" y="15"/>
+              </connectionPointOut>
+              <expression>pytest_var2</expression>
+            </inOutVariable>
+            <block localId="8" width="125" height="80" typeName="python_eval" instanceName="Block1" executionOrderId="0">
+              <position x="686" y="545"/>
+              <inputVariables>
+                <variable formalParameter="TRIG">
+                  <connectionPointIn>
+                    <relPosition x="0" y="35"/>
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+                      <position x="250" y="480"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+                <variable formalParameter="CODE">
+                  <connectionPointIn>
+                    <relPosition x="0" y="65"/>
+                    <connection refLocalId="9">
+                      <position x="686" y="610"/>
+                      <position x="665" y="610"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="ACK">
+                  <connectionPointOut>
+                    <relPosition x="125" y="35"/>
+                  </connectionPointOut>
+                </variable>
+                <variable formalParameter="RESULT">
+                  <connectionPointOut>
+                    <relPosition x="125" y="65"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <inVariable localId="9" height="30" width="370" executionOrderId="0" negated="false">
+              <position x="295" y="595"/>
+              <connectionPointOut>
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+              <expression>'MyPrintFunction("FBID :"+str(FBID)+"\n")'</expression>
+            </inVariable>
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+              <expression>'PLCBinary.Simple_C_Call(5678)'</expression>
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+                      <position x="250" y="480"/>
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+                      <position x="585" y="750"/>
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+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="ACK">
+                  <connectionPointOut>
+                    <relPosition x="125" y="33"/>
+                  </connectionPointOut>
+                </variable>
+                <variable formalParameter="RESULT">
+                  <connectionPointOut>
+                    <relPosition x="125" y="63"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
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+              <connectionPointOut>
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+              </connectionPointOut>
+              <expression>'MyPythonFunc(42)'</expression>
+            </inVariable>
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+              <position x="686" y="837"/>
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+                <variable formalParameter="TRIG">
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+                      <position x="285" y="870"/>
+                      <position x="285" y="480"/>
+                      <position x="250" y="480"/>
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+                  </connectionPointIn>
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+                <variable formalParameter="CODE">
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+                      <position x="580" y="900"/>
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+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="ACK">
+                  <connectionPointOut>
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+                  </connectionPointOut>
+                </variable>
+                <variable formalParameter="RESULT">
+                  <connectionPointOut>
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+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <comment localId="16" height="90" width="680">
+              <position x="35" y="275"/>
+              <content>
+                <xhtml:p><![CDATA[This part of the example test that, despite of 2T period clock stimulating TRIG pin of pyth_eval blocks, blocks keep executing one after the other, in respect of execution order.]]></xhtml:p>
+              </content>
+            </comment>
+            <block localId="17" width="80" height="120" typeName="MUX" executionOrderId="0">
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+                      <position x="1076" y="820"/>
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+                      <position x="1060" y="810"/>
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+                      <position x="941" y="840"/>
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+                      <position x="811" y="465"/>
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+                      <position x="926" y="860"/>
+                      <position x="926" y="610"/>
+                      <position x="811" y="610"/>
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+                      <position x="811" y="750"/>
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+                      <position x="811" y="900"/>
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+                  <position x="1181" y="820"/>
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+              <expression>pytest_var1</expression>
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+              <inputVariables>
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+                      <position x="1055" y="405"/>
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+                      <position x="841" y="455"/>
+                      <position x="841" y="580"/>
+                      <position x="811" y="580"/>
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+                      <position x="856" y="475"/>
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+                      <position x="811" y="720"/>
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+                  </connectionPointIn>
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+                <variable formalParameter="IN3">
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+                      <position x="871" y="495"/>
+                      <position x="871" y="870"/>
+                      <position x="811" y="870"/>
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+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
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+              <outputVariables>
+                <variable formalParameter="OUT">
+                  <connectionPointOut>
+                    <relPosition x="80" y="30"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <inVariable localId="22" height="30" width="74" executionOrderId="0" negated="false">
+              <position x="981" y="390"/>
+              <connectionPointOut>
+                <relPosition x="74" y="15"/>
+              </connectionPointOut>
+              <expression>mux1_sel</expression>
+            </inVariable>
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+              <position x="1271" y="400"/>
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+                  <position x="1271" y="415"/>
+                  <position x="1186" y="415"/>
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+              </connectionPointIn>
+              <expression>pytest_var3</expression>
+            </outVariable>
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+              <connectionPointIn>
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+                  <position x="265" y="1090"/>
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+              </connectionPointIn>
+              <expression>FromC</expression>
+            </outVariable>
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+              <position x="105" y="1075"/>
+              <connectionPointOut>
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+              </connectionPointOut>
+              <expression>23</expression>
+            </inVariable>
+            <block localId="26" width="80" height="45" typeName="C_Pragma" instanceName="C_Pragma0" executionOrderId="0">
+              <position x="185" y="1060"/>
+              <inputVariables>
+                <variable formalParameter="IN">
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+                      <position x="135" y="1090"/>
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+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="OUT">
+                  <connectionPointOut>
+                    <relPosition x="80" y="30"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
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+              <position x="100" y="1190"/>
+              <connectionPointOut>
+                <relPosition x="90" y="15"/>
+              </connectionPointOut>
+              <expression>TestInput</expression>
+            </inVariable>
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+              <position x="195" y="1125"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="2">
+                  <position x="195" y="1140"/>
+                  <position x="140" y="1140"/>
+                </connection>
+              </connectionPointIn>
+              <expression>TestOutput</expression>
+            </outVariable>
+            <outVariable localId="29" height="30" width="85" executionOrderId="0" negated="false">
+              <position x="215" y="1190"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="27">
+                  <position x="215" y="1205"/>
+                  <position x="190" y="1205"/>
+                </connection>
+              </connectionPointIn>
+              <expression>FromInput</expression>
+            </outVariable>
+            <inVariable localId="2" height="30" width="30" executionOrderId="0" negated="false">
+              <position x="110" y="1125"/>
+              <connectionPointOut>
+                <relPosition x="30" y="15"/>
+              </connectionPointOut>
+              <expression>10</expression>
+            </inVariable>
+            <comment localId="30" height="105" width="465">
+              <position x="50" y="925"/>
+              <content>
+                <xhtml:p><![CDATA[You will be ready to use beremiz with C and Python when you will understand why "FromInput" is equal  to 75.
+Happy hacking! ]]></xhtml:p>
+              </content>
+            </comment>
+            <comment localId="6" height="80" width="345">
+              <position x="295" y="630"/>
+              <content>
+                <xhtml:p><![CDATA[Prints FBID to stdout of PLC runtime. FBID is a unique reference to py_eval instance.]]></xhtml:p>
+              </content>
+            </comment>
+            <comment localId="10" height="85" width="345">
+              <position x="295" y="770"/>
+              <content>
+                <xhtml:p><![CDATA[Simple_C_Call is declared in C_File "1.x:c_code". See python ctypes manual for details on typing.]]></xhtml:p>
+              </content>
+            </comment>
+            <comment localId="32" height="145" width="235">
+              <position x="25" y="505"/>
+              <content>
+                <xhtml:p><![CDATA[Fast clock, at least faster that sleep(1). See what happens when python takes time to answer : PLC continues.]]></xhtml:p>
+              </content>
+            </comment>
+            <outVariable localId="33" height="30" width="133" executionOrderId="0" negated="false">
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+                  <position x="371" y="1580"/>
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+              <expression>Test_BCD_RESULT</expression>
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+              <connectionPointOut>
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+              </connectionPointOut>
+              <expression>Test_BCD</expression>
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+              <position x="265" y="1539"/>
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+              <expression>Test_DT</expression>
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+              <position x="265" y="1759"/>
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+                  </connectionPointOut>
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+              <position x="265" y="1834"/>
+              <inputVariables>
+                <variable formalParameter="IN">
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+                      <position x="242" y="1865"/>
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+                      <position x="125" y="1790"/>
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+                  <position x="460" y="1865"/>
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+              <expression>Test_Date</expression>
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+              <position x="465" y="1944"/>
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+                  <position x="400" y="2030"/>
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+              <inputVariables>
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+                      <position x="180" y="2440"/>
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+              <outputVariables>
+                <variable formalParameter="OUT">
+                  <connectionPointOut>
+                    <relPosition x="70" y="35"/>
+                  </connectionPointOut>
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+            </block>
+            <inVariable localId="48" height="30" width="105" executionOrderId="0" negated="false">
+              <position x="75" y="2425"/>
+              <connectionPointOut>
+                <relPosition x="105" y="15"/>
+              </connectionPointOut>
+              <expression>BOOL#FALSE</expression>
+            </inVariable>
+            <outVariable localId="54" height="30" width="135" executionOrderId="0" negated="false">
+              <position x="930" y="1774"/>
+              <connectionPointIn>
+                <relPosition x="0" y="16"/>
+                <connection refLocalId="55" formalParameter="OUT">
+                  <position x="930" y="1790"/>
+                  <position x="855" y="1790"/>
+                </connection>
+              </connectionPointIn>
+              <expression>Test_TOD_STRING</expression>
+            </outVariable>
+            <block localId="55" width="125" height="45" typeName="TOD_TO_STRING" executionOrderId="0">
+              <position x="730" y="1759"/>
+              <inputVariables>
+                <variable formalParameter="IN">
+                  <connectionPointIn>
+                    <relPosition x="0" y="31"/>
+                    <connection refLocalId="39">
+                      <position x="730" y="1790"/>
+                      <position x="655" y="1790"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="OUT">
+                  <connectionPointOut>
+                    <relPosition x="125" y="31"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <inOutVariable localId="39" height="30" width="75" executionOrderId="0" negatedOut="false" negatedIn="false">
+              <position x="580" y="1774"/>
+              <connectionPointIn>
+                <relPosition x="0" y="16"/>
+                <connection refLocalId="37" formalParameter="OUT">
+                  <position x="580" y="1790"/>
+                  <position x="520" y="1790"/>
+                </connection>
+              </connectionPointIn>
+              <connectionPointOut>
+                <relPosition x="75" y="16"/>
+              </connectionPointOut>
+              <expression>Test_TOD</expression>
+            </inOutVariable>
+            <inVariable localId="49" height="30" width="30" executionOrderId="0" negated="false">
+              <position x="160" y="2510"/>
+              <connectionPointOut>
+                <relPosition x="30" y="15"/>
+              </connectionPointOut>
+              <expression>42</expression>
+            </inVariable>
+            <outVariable localId="57" height="30" width="50" executionOrderId="0" negated="false">
+              <position x="240" y="2510"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="49">
+                  <position x="240" y="2525"/>
+                  <position x="190" y="2525"/>
+                </connection>
+              </connectionPointIn>
+              <expression>TOTO</expression>
+            </outVariable>
+            <outVariable localId="56" height="30" width="50" executionOrderId="0" negated="false">
+              <position x="240" y="2550"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="49">
+                  <position x="240" y="2565"/>
+                  <position x="215" y="2565"/>
+                  <position x="215" y="2525"/>
+                  <position x="190" y="2525"/>
+                </connection>
+              </connectionPointIn>
+              <expression>TUTU</expression>
+            </outVariable>
+            <inVariable localId="58" height="30" width="146" executionOrderId="0" negated="false">
+              <position x="60" y="1944"/>
+              <connectionPointOut>
+                <relPosition x="146" y="16"/>
+              </connectionPointOut>
+              <expression>Second_Python_Var</expression>
+            </inVariable>
+            <inVariable localId="59" height="30" width="30" executionOrderId="0" negated="false">
+              <position x="100" y="1385"/>
+              <connectionPointOut>
+                <relPosition x="30" y="15"/>
+              </connectionPointOut>
+              <expression>1</expression>
+            </inVariable>
+            <block localId="61" typeName="function0" executionOrderId="0" height="45" width="111">
+              <position x="760" y="1170"/>
+              <inputVariables>
+                <variable formalParameter="LocalVar0">
+                  <connectionPointIn>
+                    <relPosition x="0" y="30"/>
+                    <connection refLocalId="62">
+                      <position x="760" y="1200"/>
+                      <position x="723" y="1200"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="OUT">
+                  <connectionPointOut>
+                    <relPosition x="111" y="30"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <inVariable localId="62" executionOrderId="0" height="30" width="58" negated="false">
+              <position x="665" y="1185"/>
+              <connectionPointOut>
+                <relPosition x="58" y="15"/>
+              </connectionPointOut>
+              <expression>fefvsd</expression>
+            </inVariable>
+            <outVariable localId="63" executionOrderId="0" height="30" width="58" negated="false">
+              <position x="905" y="1185"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="61" formalParameter="OUT">
+                  <position x="905" y="1200"/>
+                  <position x="871" y="1200"/>
+                </connection>
+              </connectionPointIn>
+              <expression>fefvsd</expression>
+            </outVariable>
+            <comment localId="53" height="80" width="420">
+              <position x="75" y="2160"/>
+              <content>
+                <xhtml:p><![CDATA[Shows global variables access from resource configuration (res_pytest) and from project's configuration.]]></xhtml:p>
+              </content>
+            </comment>
+            <inVariable localId="18" height="30" width="74" executionOrderId="0" negated="false">
+              <position x="986" y="795"/>
+              <connectionPointOut>
+                <relPosition x="74" y="15"/>
+              </connectionPointOut>
+              <expression>mux2_sel</expression>
+            </inVariable>
+            <comment localId="60" height="45" width="930">
+              <position x="60" y="1480"/>
+              <content>
+                <xhtml:p><![CDATA[Here is shown how to convert values between different types (BCD, DT, TOD, STRING and others) using standard functions.]]></xhtml:p>
+              </content>
+            </comment>
+            <comment localId="64" height="55" width="300">
+              <position x="665" y="1095"/>
+              <content>
+                <xhtml:p><![CDATA[Example of usage of user-defined function.]]></xhtml:p>
+              </content>
+            </comment>
+            <comment localId="65" height="45" width="410">
+              <position x="55" y="1315"/>
+              <content>
+                <xhtml:p><![CDATA[Shows access variable defined in python extension. ]]></xhtml:p>
+              </content>
+            </comment>
+            <inVariable localId="66" height="30" width="137" executionOrderId="0" negated="false">
+              <position x="60" y="1685"/>
+              <connectionPointOut>
+                <relPosition x="137" y="15"/>
+              </connectionPointOut>
+              <expression>Test_BCD_WRONG</expression>
+            </inVariable>
+            <block localId="67" width="106" height="100" typeName="BCD_TO_UINT" executionOrderId="0">
+              <position x="265" y="1620"/>
+              <inputVariables>
+                <variable formalParameter="EN">
+                  <connectionPointIn>
+                    <relPosition x="0" y="40"/>
+                  </connectionPointIn>
+                </variable>
+                <variable formalParameter="IN">
+                  <connectionPointIn>
+                    <relPosition x="0" y="80"/>
+                    <connection refLocalId="66">
+                      <position x="265" y="1700"/>
+                      <position x="255" y="1700"/>
+                      <position x="255" y="1700"/>
+                      <position x="345" y="1700"/>
+                      <position x="345" y="1700"/>
+                      <position x="197" y="1700"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="ENO">
+                  <connectionPointOut>
+                    <relPosition x="106" y="40"/>
+                  </connectionPointOut>
+                </variable>
+                <variable formalParameter="OUT">
+                  <connectionPointOut>
+                    <relPosition x="106" y="80"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <outVariable localId="68" height="30" width="196" executionOrderId="0" negated="false">
+              <position x="580" y="1685"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="67" formalParameter="OUT">
+                  <position x="580" y="1700"/>
+                  <position x="371" y="1700"/>
+                </connection>
+              </connectionPointIn>
+              <expression>Test_BCD_WRONG_RESULT</expression>
+            </outVariable>
+            <comment localId="69" height="165" width="375">
+              <position x="795" y="1590"/>
+              <content>
+                <xhtml:p><![CDATA[Incorrect BCD number is not converted to UINT.
+
+151 (16#97) is good BCD number , but 
+154 (16#9A) is not.  
+
+Try this out and look at value of  Test_BCD_CONVERTED variable.
+
+
+]]></xhtml:p>
+              </content>
+            </comment>
+            <outVariable localId="70" height="30" width="185" executionOrderId="0" negated="false">
+              <position x="580" y="1645"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="67" formalParameter="ENO">
+                  <position x="580" y="1660"/>
+                  <position x="370" y="1660"/>
+                </connection>
+              </connectionPointIn>
+              <expression>Test_BCD_CONVERTED</expression>
+            </outVariable>
+            <comment localId="71" height="215" width="680">
+              <position x="35" y="30"/>
+              <content>
+                <xhtml:p><![CDATA[This example shows many features in Beremiz:
+
+   1. How to implement python extensions.
+   2. How to implement basic C extension.
+   3. How to use C code in IEC POUs.
+   4. How to call C functions from python code.
+   5. How to avoid race conditions between IEC, C and python code.
+   6. How to convert betweet different IEC types.
+]]></xhtml:p>
+              </content>
+            </comment>
+            <outVariable localId="72" executionOrderId="0" height="30" width="60" negated="false">
+              <position x="1065" y="1970"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="76" formalParameter="OUT">
+                  <position x="1065" y="1985"/>
+                  <position x="1025" y="1985"/>
+                  <position x="1025" y="1995"/>
+                  <position x="985" y="1995"/>
+                </connection>
+              </connectionPointIn>
+              <expression>Grumpf</expression>
+            </outVariable>
+            <inVariable localId="73" executionOrderId="0" height="30" width="85" negated="false">
+              <position x="625" y="1940"/>
+              <connectionPointOut>
+                <relPosition x="85" y="15"/>
+              </connectionPointOut>
+              <expression>BOOL#TRUE</expression>
+            </inVariable>
+            <inVariable localId="74" executionOrderId="0" height="30" width="70" negated="false">
+              <position x="625" y="1975"/>
+              <connectionPointOut>
+                <relPosition x="70" y="15"/>
+              </connectionPointOut>
+              <expression>Test_DT</expression>
+            </inVariable>
+            <block localId="75" typeName="RTC" instanceName="RTC0" executionOrderId="0" height="90" width="65">
+              <position x="760" y="1925"/>
+              <inputVariables>
+                <variable formalParameter="IN">
+                  <connectionPointIn>
+                    <relPosition x="0" y="35"/>
+                    <connection refLocalId="73">
+                      <position x="760" y="1960"/>
+                      <position x="735" y="1960"/>
+                      <position x="735" y="1955"/>
+                      <position x="710" y="1955"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+                <variable formalParameter="PDT">
+                  <connectionPointIn>
+                    <relPosition x="0" y="70"/>
+                    <connection refLocalId="74">
+                      <position x="760" y="1995"/>
+                      <position x="727" y="1995"/>
+                      <position x="727" y="1990"/>
+                      <position x="695" y="1990"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="Q">
+                  <connectionPointOut>
+                    <relPosition x="65" y="35"/>
+                  </connectionPointOut>
+                </variable>
+                <variable formalParameter="CDT">
+                  <connectionPointOut>
+                    <relPosition x="65" y="70"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <block localId="76" typeName="DT_TO_STRING" executionOrderId="0" height="40" width="110">
+              <position x="875" y="1965"/>
+              <inputVariables>
+                <variable formalParameter="IN">
+                  <connectionPointIn>
+                    <relPosition x="0" y="30"/>
+                    <connection refLocalId="75" formalParameter="CDT">
+                      <position x="875" y="1995"/>
+                      <position x="825" y="1995"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="OUT">
+                  <connectionPointOut>
+                    <relPosition x="110" y="30"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <block localId="77" typeName="ADD" executionOrderId="0" height="60" width="65">
+              <position x="170" y="1370"/>
+              <inputVariables>
+                <variable formalParameter="IN1">
+                  <connectionPointIn>
+                    <relPosition x="0" y="30"/>
+                    <connection refLocalId="59">
+                      <position x="170" y="1400"/>
+                      <position x="130" y="1400"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+                <variable formalParameter="IN2">
+                  <connectionPointIn>
+                    <relPosition x="0" y="50"/>
+                    <connection refLocalId="78">
+                      <position x="170" y="1420"/>
+                      <position x="160" y="1420"/>
+                      <position x="160" y="1450"/>
+                      <position x="390" y="1450"/>
+                      <position x="390" y="1400"/>
+                      <position x="380" y="1400"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="OUT">
+                  <connectionPointOut>
+                    <relPosition x="65" y="30"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <outVariable localId="47" executionOrderId="0" height="30" width="130" negated="false">
+              <position x="625" y="1335"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="79">
+                  <position x="625" y="1350"/>
+                  <position x="590" y="1350"/>
+                </connection>
+              </connectionPointIn>
+              <expression>Test_Python_Var</expression>
+            </outVariable>
+            <inVariable localId="79" executionOrderId="0" height="27" width="30" negated="false">
+              <position x="560" y="1340"/>
+              <connectionPointOut>
+                <relPosition x="30" y="15"/>
+              </connectionPointOut>
+              <expression>23</expression>
+            </inVariable>
+            <inOutVariable localId="78" executionOrderId="0" height="30" width="100" negatedOut="false" negatedIn="false">
+              <position x="280" y="1385"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="77" formalParameter="OUT">
+                  <position x="280" y="1400"/>
+                  <position x="235" y="1400"/>
+                </connection>
+              </connectionPointIn>
+              <connectionPointOut>
+                <relPosition x="100" y="15"/>
+              </connectionPointOut>
+              <expression>SomeVarName</expression>
+            </inOutVariable>
+            <block localId="80" typeName="MOVE" executionOrderId="0" height="40" width="60">
+              <position x="570" y="455"/>
+              <inputVariables>
+                <variable formalParameter="IN">
+                  <connectionPointIn>
+                    <relPosition x="0" y="30"/>
+                    <connection refLocalId="82">
+                      <position x="578" y="485"/>
+                      <position x="532" y="485"/>
+                    </connection>
+                  </connectionPointIn>
+                </variable>
+              </inputVariables>
+              <inOutVariables/>
+              <outputVariables>
+                <variable formalParameter="OUT">
+                  <connectionPointOut>
+                    <relPosition x="60" y="30"/>
+                  </connectionPointOut>
+                </variable>
+              </outputVariables>
+            </block>
+            <connector name="Connection0" localId="81" height="30" width="130">
+              <position x="545" y="390"/>
+              <connectionPointIn>
+                <relPosition x="0" y="15"/>
+                <connection refLocalId="4">
+                  <position x="545" y="405"/>
+                  <position x="515" y="405"/>
+                </connection>
+              </connectionPointIn>
+            </connector>
+            <continuation name="Connection0" localId="82" height="30" width="130">
+              <position x="410" y="470"/>
+              <connectionPointOut>
+                <relPosition x="130" y="15"/>
+              </connectionPointOut>
+            </continuation>
+          </FBD>
+        </body>
+      </pou>
+      <pou name="C_Pragma" pouType="functionBlock">
+        <interface>
+          <outputVars>
+            <variable name="OUT">
+              <type>
+                <SINT/>
+              </type>
+            </variable>
+          </outputVars>
+          <inputVars>
+            <variable name="IN">
+              <type>
+                <SINT/>
+              </type>
+            </variable>
+          </inputVars>
+          <localVars>
+            <variable name="COORDS">
+              <type>
+                <array>
+                  <dimension lower="0" upper="5"/>
+                  <baseType>
+                    <SINT/>
+                  </baseType>
+                </array>
+              </type>
+              <initialValue>
+                <arrayValue>
+                  <value>
+                    <simpleValue value="54"/>
+                  </value>
+                  <value>
+                    <simpleValue value="55"/>
+                  </value>
+                  <value>
+                    <simpleValue value="56"/>
+                  </value>
+                  <value>
+                    <simpleValue value="57"/>
+                  </value>
+                  <value>
+                    <simpleValue value="58"/>
+                  </value>
+                  <value>
+                    <simpleValue value="59"/>
+                  </value>
+                </arrayValue>
+              </initialValue>
+            </variable>
+            <variable name="SMURF">
+              <type>
+                <derived name="CPLX_TYPE"/>
+              </type>
+            </variable>
+          </localVars>
+          <externalVars>
+            <variable name="Global_RS">
+              <type>
+                <derived name="RS"/>
+              </type>
+            </variable>
+            <variable name="Dudiduda">
+              <type>
+                <derived name="blups"/>
+              </type>
+            </variable>
+          </externalVars>
+        </interface>
+        <body>
+          <ST>
+            <xhtml:p><![CDATA[(* hereafter is a C pragma accessing FB interface in a clean way *)
+{{
+  char toPLC;
+  char fromPLC = GetFbVar(IN);
+  extern int PLC_C_Call(char, char *);
+  if(PLC_C_Call(fromPLC, &toPLC)){
+    SetFbVar(OUT, toPLC);
+  }
+  if(0){
+    /* that code demonstrate C access to complex types */
+    char somebyte = GetFbVar(COORDS, .table[3]);
+    SetFbVar(SMURF, somebyte, .FIRSTBYTE);
+    SetFbVar(COORDS, somebyte, .table[4]);
+  }
+}}
+(* If you do not use GetFbVar and SetFbVar macros, expect unexpected behaviour*)
+Global_RS();
+
+(* testing access to global struct array *)
+Dudiduda[2].FIRSTBYTE := 0;
+]]></xhtml:p>
+          </ST>
+        </body>
+      </pou>
+      <pou name="norm" pouType="function">
+        <interface>
+          <returnType>
+            <REAL/>
+          </returnType>
+          <inputVars>
+            <variable name="IN1">
+              <type>
+                <REAL/>
+              </type>
+            </variable>
+            <variable name="IN2">
+              <type>
+                <REAL/>
+              </type>
+            </variable>
+          </inputVars>
+        </interface>
+        <body>
+          <ST>
+            <xhtml:p><![CDATA[NORM := SQRT(IN1 * IN1 + IN2 * IN2);]]></xhtml:p>
+          </ST>
+        </body>
+      </pou>
+      <pou name="function0" pouType="function">
+        <interface>
+          <returnType>
+            <derived name="datatype0"/>
+          </returnType>
+          <inputVars>
+            <variable name="LocalVar0">
+              <type>
+                <derived name="datatype0"/>
+              </type>
+            </variable>
+          </inputVars>
+        </interface>
+        <body>
+          <ST>
+            <xhtml:p><![CDATA[function0 := LocalVar0;
+]]></xhtml:p>
+          </ST>
+        </body>
+      </pou>
+    </pous>
+  </types>
+  <instances>
+    <configurations>
+      <configuration name="config">
+        <resource name="res_pytest">
+          <task name="pytest_task" priority="0" interval="T#500ms"/>
+          <globalVars>
+            <variable name="TOTO">
+              <type>
+                <INT/>
+              </type>
+            </variable>
+          </globalVars>
+          <pouInstance name="pytest_instance" typeName="main_pytest"/>
+        </resource>
+        <globalVars>
+          <variable name="Global_RS">
+            <type>
+              <derived name="RS"/>
+            </type>
+          </variable>
+          <variable name="Dudiduda">
+            <type>
+              <derived name="blups"/>
+            </type>
+          </variable>
+          <variable name="TUTU">
+            <type>
+              <INT/>
+            </type>
+          </variable>
+        </globalVars>
+      </configuration>
+    </configurations>
+  </instances>
+</project>
--- a/exemples/python/python@py_ext/pyfile.xml	Mon Aug 07 18:17:12 2023 +0200
+++ b/exemples/python/python@py_ext/pyfile.xml	Thu Sep 28 17:56:03 2023 +0200
@@ -1,69 +1,79 @@
-<?xml version='1.0' encoding='utf-8'?>
-<PyFile xmlns:xhtml="http://www.w3.org/1999/xhtml">
-  <variables>
-    <variable name="Test_Python_Var" type="INT" initial="4"/>
-    <variable name="Second_Python_Var" type="INT" initial="5"/>
-  </variables>
-  <globals>
-    <xhtml:p><![CDATA[
-import time,sys,ctypes
-Python_to_C_Call = PLCBinary.Python_to_C_Call
-Python_to_C_Call.restype = ctypes.c_int
-Python_to_C_Call.argtypes = [ctypes.c_int, ctypes.POINTER(ctypes.c_int)]
-
-def MyPythonFunc(arg):
-    i = ctypes.c_int()
-    if(Python_to_C_Call(arg, i)):
-        res = i.value
-        print("toC:", arg, "from C:", res, "FBID:", FBID)
-    else:
-        print("Failed Python_to_C_Call failed")
-        res = None
-    print("Python read PLC global :",PLCGlobals.Test_Python_Var)
-    print("Python read PLC global Grumpf :",PLCGlobals.Grumpf)
-    PLCGlobals.Second_Python_Var = 789
-    sys.stdout.flush()
-    return res
-
-async_error_test_code = """
-def badaboom():
-    tuple()[0]
-
-import wx
-def badaboomwx():
-    wx.CallAfter(badaboom)
-
-from threading import Timer
-a = Timer(3, badaboom)
-a.start()
-
-b = Timer(6, badaboomwx)
-b.start()
-"""
-]]></xhtml:p>
-  </globals>
-  <init>
-    <xhtml:p><![CDATA[
-global x, y
-x = 2
-y = 5
-print("py_runtime init:", x, ",", y)
-]]></xhtml:p>
-  </init>
-  <cleanup>
-    <xhtml:p><![CDATA[
-print("py_runtime cleanup")
-]]></xhtml:p>
-  </cleanup>
-  <start>
-    <xhtml:p><![CDATA[
-global x, y
-print("py_runtime start", x * x + y * y)
-]]></xhtml:p>
-  </start>
-  <stop>
-    <xhtml:p><![CDATA[
-print("py_runtime stop")
-]]></xhtml:p>
-  </stop>
-</PyFile>
+<?xml version='1.0' encoding='utf-8'?>
+<PyFile xmlns:xhtml="http://www.w3.org/1999/xhtml">
+  <variables>
+    <variable name="Test_Python_Var" type="INT" initial="4"/>
+    <variable name="Second_Python_Var" type="INT" initial="5"/>
+  </variables>
+  <globals>
+    <xhtml:p><![CDATA[
+import time,sys,ctypes
+Python_to_C_Call = PLCBinary.Python_to_C_Call
+Python_to_C_Call.restype = ctypes.c_int
+Python_to_C_Call.argtypes = [ctypes.c_int, ctypes.POINTER(ctypes.c_int)]
+
+
+def MyPrintFunction(msg):
+    if sys.stdout:
+        sys.stdout.write(msg)
+        sys.stdout.flush()
+    else:
+        PLCObject.LogMessage(msg)
+
+def MyPythonFunc(arg):
+    i = ctypes.c_int()
+    if(Python_to_C_Call(arg, i)):
+        res = i.value
+        print("toC:", arg, "from C:", res, "FBID:", FBID)
+    else:
+        print("Failed Python_to_C_Call failed")
+        res = None
+    print("Python read PLC global :",PLCGlobals.Test_Python_Var)
+    print("Python read PLC global Grumpf :",PLCGlobals.Grumpf)
+    PLCGlobals.Second_Python_Var = 789
+
+    if sys.stdout:
+        sys.stdout.flush()
+    return res
+
+async_error_test_code = """
+def badaboom():
+    tuple()[0]
+
+import wx
+def badaboomwx():
+    wx.CallAfter(badaboom)
+
+from threading import Timer
+a = Timer(3, badaboom)
+a.start()
+
+b = Timer(6, badaboomwx)
+b.start()
+"""
+]]></xhtml:p>
+  </globals>
+  <init>
+    <xhtml:p><![CDATA[
+global x, y
+x = 2
+y = 5
+print("py_runtime init:", x, ",", y)
+]]></xhtml:p>
+  </init>
+  <cleanup>
+    <xhtml:p><![CDATA[
+print("py_runtime cleanup")
+]]></xhtml:p>
+  </cleanup>
+  <start>
+    <xhtml:p><![CDATA[
+global x, y
+print("py_runtime start", x * x + y * y)
+]]></xhtml:p>
+  </start>
+  <stop>
+    <xhtml:p><![CDATA[
+print("py_runtime stop")
+]]></xhtml:p>
+  </stop>
+</PyFile>
--- a/runtime/PLCObject.py	Mon Aug 07 18:17:12 2023 +0200
+++ b/runtime/PLCObject.py	Thu Sep 28 17:56:03 2023 +0200
@@ -62,8 +62,9 @@
 
 
 def PLCprint(message):
-    sys.stdout.write("PLCobject : "+message+"\n")
-    sys.stdout.flush()
+    if sys.stdout:
+        sys.stdout.write("PLCobject : "+message+"\n")
+        sys.stdout.flush()
 
 
 def RunInMain(func):
--- a/runtime/PyroServer.py	Mon Aug 07 18:17:12 2023 +0200
+++ b/runtime/PyroServer.py	Thu Sep 28 17:56:03 2023 +0200
@@ -73,7 +73,8 @@
         if self._to_be_published():
             print(_("Publishing service on local network"))
 
-        sys.stdout.flush()
+        if sys.stdout:
+            sys.stdout.flush()
 
     def PyroLoop(self, when_ready):
         if self._to_be_published():
beremiz