No connection to OPC ua server. 'Error using asyncioimpl.Channel Failure to load the converter plug-in'

Question

Hamdi Koese 2019-7-29

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/473914-no-connection-to-opc-ua-server-error-using-asyncioimpl-channel-failure-to-load-the-converter-plug

回答： Srinivasarao Kamala 2021-3-1

Hello

i want to connect to an OPC ua server. He gives me succesfully the server information with hostname and IP adress.

But if i want to connect to the server (for reading data) it gives me error messages with:

'Error using asyncioimpl.Channel

Failure to load the converter plug-inNo connectio.'

Here the full Matlab code i typed in:

% OPC ua Server verifizieren und Info einholen

sInfo = opcuaserverinfo('169.254.173.186')

sInfo =

OPC UA ServerInfo 'TcOpcUaServer@CX-433476':

Connection Information

Hostname: 'CX-433476'

Port: 4840

% als Client definieren und verbinden

uaClient = opcua('169.254.173.186',4840);

connect(uaClient);

Error using asyncioimpl.Channel

Failure to load the converter plug-in.

Error in asyncio.Channel (line 122)

obj.ChannelImpl = asyncioimpl.Channel(devicePluginPath,...

Error in opc.ua.Channel (line 19)

obj@asyncio.Channel(deviceName, converterName, varargin{:});

Error in opc.ua.Client/connect (line 472)

clnt.AsyncChannel = opc.ua.Channel(options, [Inf,0]);

>> uaClient = opcua('opc.tcp://169.254.173.186:4840');

connect(uaClient);

Error using opc.ua.Client (line 308)

Server URL must start with 'opc.tcp://hostname:port'.

Error in opcua (line 32)

uaObj = opc.ua.Client(varargin{:});

>> uaClient = opcua('opc.tcp://CX-433476:4840');

connect(uaClient);

Error using opc.ua.Client (line 308)

Server URL must start with 'opc.tcp://hostname:port'.

Error in opcua (line 32)

uaObj = opc.ua.Client(varargin{:});

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Answer 1

Prashant Nirmal 2019-11-15

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/473914-no-connection-to-opc-ua-server-error-using-asyncioimpl-channel-failure-to-load-the-converter-plug#answer_401610

OPC UA functionality does not include support for Simulink. This has been clarified in the upcoming release documentation. Also, refer to the following link:

http://www.mathworks.com/help/opc/data-access-with-simulink-.html

To use the OPC UA client functionality from Simulink call the MATLAB functions from Simulink. For example write a Level-2 MATLAB S-Function, or use an (Interpreted) MATLAB Function block.