OPCUA在OMpython中的交互仿真

我尝试在python中使用opc ua接口运行openmodelica测试模型。 测试模型：

model test1

  input Real x1(start = 0);
  input Real x2(start = 0);
  input Real x3(start = 0);

  output Real y1;
  output Real y2;
  output Real y3;
equation

  der(y1) = x1;
  der(y2) = x2;
  der(y3) = x3;

initial equation

  y1 = 0;
  y2 = 1;
  y3 = 2;

end test1;

模型运行的纸条（在终端1中执行）：

连接到模型的脚本（test1_opcua.py）（在终端2中执行）：

总而言之，我有：

Requested secure channel timeout to be 3600000ms, got 600000ms instead
0) QualifiedName(0:Server) -
1) QualifiedName(1:OpenModelica.step) - False
2) QualifiedName(1:OpenModelica.run) - False
3) QualifiedName(1:OpenModelica.realTimeScalingFactor) - 0.0
4) QualifiedName(1:OpenModelica.enableStopTime) - True
5) QualifiedName(1:time) - 0.0
6) QualifiedName(1:y1) - 0.0
7) QualifiedName(1:y2) - 1.0
8) QualifiedName(1:y3) - 2.0
9) QualifiedName(1:der(y1)) - 0.0
10) QualifiedName(1:der(y2)) - 0.0
11) QualifiedName(1:der(y3)) - 0.0
12) QualifiedName(1:x1) - 0.0
13) QualifiedName(1:x2) - 0.0
14) QualifiedName(1:x3) - 0.0

但是在命令

modelID[2]。在termina1中设置_值（True）

（我试图启动测试模型）之后，我出现了错误：

Traceback (most recent call last):
  File "./fmutest1_opcua.py", line 12, in <module>
    answer = omc.sendExpression(cmd)
  File "/usr/local/lib/python3.7/dist-packages/OMPython/__init__.py", line 628, in sendExpression
    answer = OMTypedParser.parseString(result)
  File "/usr/local/lib/python3.7/dist-packages/OMPython/OMTypedParser.py", line 120, in parseString
    return omcGrammar.parseString(string)[0]
  File "/usr/local/lib/python3.7/dist-packages/pyparsing.py", line 1955, in parseString
    raise exc
  File "/usr/local/lib/python3.7/dist-packages/pyparsing.py", line 3814, in parseImpl
    raise ParseException(instring, loc, self.errmsg, self)
pyparsing.ParseException: Expected end of text, found '"'  (at char 15774), (line:150, col:1)

---

似乎OMPython解析器在解析simulate命令的结果时遇到问题，因为opcua附加标志和附加输出。我建议执行buildModel（tests.test1，stopTime=1000.0），然后使用额外的模拟标志直接从python运行可执行文件。谢谢，如果我从terminal

/tests.test1-embeddedServer=opc ua-embeddedServerPort=4841-rt=1运行模型，它工作正常。我猜模拟输出中的某些内容没有正确转义，因此OMC根据OMPython输出错误数据。似乎OMPython解析器在分析模拟命令的结果时出现问题，因为opcua附加标志和附加输出。我建议执行buildModel（tests.test1，stopTime=1000.0），然后使用额外的模拟标志直接从python运行可执行文件。谢谢，如果我从terminal
/tests.test1-embeddedServer=opc ua-embeddedServerPort=4841-rt=1运行模型，它工作正常。我猜模拟输出中的某些内容没有正确转义，因此OMC根据OMPython输出错误数据。
Requested secure channel timeout to be 3600000ms, got 600000ms instead
0) QualifiedName(0:Server) -
1) QualifiedName(1:OpenModelica.step) - False
2) QualifiedName(1:OpenModelica.run) - False
3) QualifiedName(1:OpenModelica.realTimeScalingFactor) - 0.0
4) QualifiedName(1:OpenModelica.enableStopTime) - True
5) QualifiedName(1:time) - 0.0
6) QualifiedName(1:y1) - 0.0
7) QualifiedName(1:y2) - 1.0
8) QualifiedName(1:y3) - 2.0
9) QualifiedName(1:der(y1)) - 0.0
10) QualifiedName(1:der(y2)) - 0.0
11) QualifiedName(1:der(y3)) - 0.0
12) QualifiedName(1:x1) - 0.0
13) QualifiedName(1:x2) - 0.0
14) QualifiedName(1:x3) - 0.0

Traceback (most recent call last):
  File "./fmutest1_opcua.py", line 12, in <module>
    answer = omc.sendExpression(cmd)
  File "/usr/local/lib/python3.7/dist-packages/OMPython/__init__.py", line 628, in sendExpression
    answer = OMTypedParser.parseString(result)
  File "/usr/local/lib/python3.7/dist-packages/OMPython/OMTypedParser.py", line 120, in parseString
    return omcGrammar.parseString(string)[0]
  File "/usr/local/lib/python3.7/dist-packages/pyparsing.py", line 1955, in parseString
    raise exc
  File "/usr/local/lib/python3.7/dist-packages/pyparsing.py", line 3814, in parseImpl
    raise ParseException(instring, loc, self.errmsg, self)
pyparsing.ParseException: Expected end of text, found '"'  (at char 15774), (line:150, col:1)

FROM debian

EXPOSE 4841
EXPOSE 4842

RUN apt-get update
RUN apt-get install nano -y
RUN apt-get install wget -y
RUN apt-get install gnupg2 -y
RUN apt-get install lsb-release -y
RUN for deb in deb deb-src; do echo "$deb http://build.openmodelica.org/apt `lsb_release -cs` stable"; done | tee /etc/apt/sources.list.d/openmodelica.list
RUN wget -q http://build.openmodelica.org/apt/openmodelica.asc -O- | apt-key add -
RUN apt-get update
RUN apt-get install python3 -y
RUN apt-get install python3-pip -y
RUN apt-get install openmodelica -y
RUN pip3 install https://github.com/OpenModelica/OMPython/archive/master.zip
RUN pip3 install matplotlib
RUN pip3 install opcua

RUN adduser --disabled-password --gecos "" artyom
RUN su artyom
USER artyom
ENV USER artyom

WORKDIR /TPPSim02/python

CMD [ "python3", "./test1_opcua.py"]