tests/projects/modbus/plc.xml
author Edouard Tisserant <edouard.tisserant@gmail.com>
Wed, 05 Oct 2022 16:10:17 +0200
branchwxPython4
changeset 3617 c3aae4c95bc1
parent 3416 53c66c4aefa3
permissions -rw-r--r--
Runtime: work around 1s delay added when using twisted reactor's callLater.

Since wxPython4, using wxReactor from non-main thread was producing
exceptions in wxWidget's C++ code. Then reactor.run() was called from
main thread, and runtime's worker was delegating calls to reactor
with callLater(0, callable).

While this worked perfectly with wxReactor, it did introduce an unexplained
1 second delay to each worker call when using nomal linux reactors
(i.e. without wxPython). As a workaround reactor runs in a thread when using
twisted without wxPython
<?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="Beremiz" productName="Beremiz" productVersion="1" creationDateTime="2018-07-27T13:19:12"/>
  <contentHeader name="Modbus" modificationDateTime="2018-07-27T15:43:56">
    <coordinateInfo>
      <fbd>
        <scaling x="0" y="0"/>
      </fbd>
      <ld>
        <scaling x="0" y="0"/>
      </ld>
      <sfc>
        <scaling x="0" y="0"/>
      </sfc>
    </coordinateInfo>
  </contentHeader>
  <types>
    <dataTypes/>
    <pous>
      <pou name="program0" pouType="program">
        <interface>
          <localVars>
            <variable name="Counter">
              <type>
                <INT/>
              </type>
            </variable>
            <variable name="CounterReadBack">
              <type>
                <INT/>
              </type>
            </variable>
          </localVars>
          <localVars>
            <variable name="MasterWriteToReg0" address="%QW0.0.0.0">
              <type>
                <INT/>
              </type>
            </variable>
            <variable name="MasterReadFromReg1" address="%IW0.0.1.0">
              <type>
                <INT/>
              </type>
            </variable>
            <variable name="SlaveHoldReg0" address="%IW0.1.0.0">
              <type>
                <WORD/>
              </type>
            </variable>
            <variable name="SlaveInputReg0" address="%QW0.1.1.0">
              <type>
                <WORD/>
              </type>
            </variable>
          </localVars>
          <localVars>
            <variable name="CTU0">
              <type>
                <derived name="CTU"/>
              </type>
            </variable>
            <variable name="Generator0">
              <type>
                <derived name="Generator"/>
              </type>
            </variable>
          </localVars>
        </interface>
        <body>
          <FBD>
            <comment localId="4" height="109" width="350">
              <position x="102" y="438"/>
              <content>
                <xhtml:p><![CDATA[Modbus TCP Master writes counter value to one holding register on Modbus TCP Slave and reads it back from other input register.]]></xhtml:p>
              </content>
            </comment>
            <comment localId="3" height="407" width="680">
              <position x="21" y="15"/>
              <content>
                <xhtml:p><![CDATA[This examples shows how to work with Modbus extension. It uses Modbus TCP, but the same functions are available for Modbus RTU as well. Buth protocols are supported.

Modbus extensions requires native Modbus RTU/TCP library to be installed nearby Beremiz.
Following directory structure is expected:
<Parent directory>
  "beremiz"
  "Modbus"

If Modbus library is installed elsewhere, then place corresponding paths
in CFLAGS/LDFLAGS in project settings.

For GNU/Linux to install Modbus library in parent directory run following commands:
$ hg clone https://bitbucket.org/mjsousa/modbus Modbus
$ cd Modbus
$ make

After that Modbus extension is ready to be used in Beremiz projects.]]></xhtml:p>
              </content>
            </comment>
            <block localId="5" typeName="CTU" instanceName="CTU0" executionOrderId="0" height="80" width="52">
              <position x="346" y="605"/>
              <inputVariables>
                <variable formalParameter="CU" edge="rising">
                  <connectionPointIn>
                    <relPosition x="0" y="30"/>
                    <connection refLocalId="6" formalParameter="OUT">
                      <position x="346" y="635"/>
                      <position x="303" y="635"/>
                    </connection>
                  </connectionPointIn>
                </variable>
                <variable formalParameter="R">
                  <connectionPointIn>
                    <relPosition x="0" y="50"/>
                  </connectionPointIn>
                </variable>
                <variable formalParameter="PV">
                  <connectionPointIn>
                    <relPosition x="0" y="70"/>
                    <connection refLocalId="7">
                      <position x="346" y="675"/>
                      <position x="324" y="675"/>
                      <position x="324" y="703"/>
                      <position x="302" y="703"/>
                    </connection>
                  </connectionPointIn>
                </variable>
              </inputVariables>
              <inOutVariables/>
              <outputVariables>
                <variable formalParameter="Q">
                  <connectionPointOut>
                    <relPosition x="52" y="30"/>
                  </connectionPointOut>
                </variable>
                <variable formalParameter="CV">
                  <connectionPointOut>
                    <relPosition x="52" y="50"/>
                  </connectionPointOut>
                </variable>
              </outputVariables>
            </block>
            <block localId="6" typeName="Generator" instanceName="Generator0" executionOrderId="0" height="60" width="79">
              <position x="224" y="605"/>
              <inputVariables>
                <variable formalParameter="PON">
                  <connectionPointIn>
                    <relPosition x="0" y="30"/>
                    <connection refLocalId="1">
                      <position x="224" y="635"/>
                      <position x="154" y="635"/>
                    </connection>
                  </connectionPointIn>
                </variable>
                <variable formalParameter="POFF">
                  <connectionPointIn>
                    <relPosition x="0" y="50"/>
                    <connection refLocalId="1">
                      <position x="224" y="655"/>
                      <position x="189" y="655"/>
                      <position x="189" y="635"/>
                      <position x="154" y="635"/>
                    </connection>
                  </connectionPointIn>
                </variable>
              </inputVariables>
              <inOutVariables/>
              <outputVariables>
                <variable formalParameter="OUT">
                  <connectionPointOut>
                    <relPosition x="79" y="30"/>
                  </connectionPointOut>
                </variable>
              </outputVariables>
            </block>
            <inVariable localId="1" executionOrderId="0" height="30" width="138" negated="false">
              <position x="16" y="620"/>
              <connectionPointOut>
                <relPosition x="138" y="15"/>
              </connectionPointOut>
              <expression>T#1s</expression>
            </inVariable>
            <inVariable localId="7" executionOrderId="0" height="30" width="138" negated="false">
              <position x="164" y="688"/>
              <connectionPointOut>
                <relPosition x="138" y="15"/>
              </connectionPointOut>
              <expression>32767</expression>
            </inVariable>
            <inOutVariable localId="2" executionOrderId="0" height="30" width="138" negatedOut="false" negatedIn="false">
              <position x="544" y="640"/>
              <connectionPointIn>
                <relPosition x="0" y="15"/>
                <connection refLocalId="5" formalParameter="CV">
                  <position x="544" y="655"/>
                  <position x="398" y="655"/>
                </connection>
              </connectionPointIn>
              <connectionPointOut>
                <relPosition x="138" y="15"/>
              </connectionPointOut>
              <expression>Counter</expression>
            </inOutVariable>
            <outVariable localId="8" executionOrderId="0" height="30" width="138" negated="false">
              <position x="762" y="640"/>
              <connectionPointIn>
                <relPosition x="0" y="15"/>
                <connection refLocalId="2">
                  <position x="762" y="655"/>
                  <position x="682" y="655"/>
                </connection>
              </connectionPointIn>
              <expression>MasterWriteToReg0</expression>
            </outVariable>
            <inVariable localId="9" executionOrderId="0" height="30" width="152" negated="false">
              <position x="81" y="747"/>
              <connectionPointOut>
                <relPosition x="152" y="15"/>
              </connectionPointOut>
              <expression>MasterReadFromReg1</expression>
            </inVariable>
            <outVariable localId="10" executionOrderId="0" height="30" width="137" negated="false">
              <position x="547" y="747"/>
              <connectionPointIn>
                <relPosition x="0" y="15"/>
                <connection refLocalId="9">
                  <position x="547" y="762"/>
                  <position x="233" y="762"/>
                </connection>
              </connectionPointIn>
              <expression>CounterReadBack</expression>
            </outVariable>
            <comment localId="11" height="109" width="350">
              <position x="85" y="825"/>
              <content>
                <xhtml:p><![CDATA[Modbus TCP Slave just copies received register value from holding register to input register.]]></xhtml:p>
              </content>
            </comment>
            <inVariable localId="12" executionOrderId="0" height="30" width="152" negated="false">
              <position x="82" y="970"/>
              <connectionPointOut>
                <relPosition x="152" y="15"/>
              </connectionPointOut>
              <expression>SlaveHoldReg0</expression>
            </inVariable>
            <outVariable localId="13" executionOrderId="0" height="30" width="123" negated="false">
              <position x="548" y="970"/>
              <connectionPointIn>
                <relPosition x="0" y="15"/>
                <connection refLocalId="12">
                  <position x="548" y="985"/>
                  <position x="234" y="985"/>
                </connection>
              </connectionPointIn>
              <expression>SlaveInputReg0</expression>
            </outVariable>
          </FBD>
        </body>
      </pou>
      <pou name="Generator" pouType="functionBlock">
        <interface>
          <outputVars>
            <variable name="OUT">
              <type>
                <BOOL/>
              </type>
            </variable>
          </outputVars>
          <inputVars>
            <variable name="PON">
              <type>
                <TIME/>
              </type>
            </variable>
            <variable name="POFF">
              <type>
                <TIME/>
              </type>
            </variable>
          </inputVars>
          <localVars>
            <variable name="T1">
              <type>
                <derived name="TON"/>
              </type>
            </variable>
            <variable name="T2">
              <type>
                <derived name="TOF"/>
              </type>
            </variable>
          </localVars>
        </interface>
        <body>
          <ST>
            <xhtml:p><![CDATA[T1( IN := NOT T2.Q, PT := POFF);
T2( IN := T1.Q,     PT := PON);
OUT := T2.Q;]]></xhtml:p>
          </ST>
        </body>
      </pou>
    </pous>
  </types>
  <instances>
    <configurations>
      <configuration name="config">
        <resource name="resource1">
          <task name="task0" priority="0" interval="T#20ms">
            <pouInstance name="instance0" typeName="program0"/>
          </task>
        </resource>
      </configuration>
    </configurations>
  </instances>
</project>