Connecting Simulation Model to PLC using OPC UA - facing issue!!!

[nitin_s]

[ FlexSim 22.2.0 ]

I am trying to connect my Simulation Model to PLC using OPC UA, it shows that model has successful configuration but its popping up with the following error while i am trying to browse the Node ID under variable section:

exception: Failed to connect the session: BadIdentityTokenInvalid on MyPLC. Error code 0x80200000 BadIdentityTokenInvalid

exception: Could not open OPC UA client connection on MyPLC. Error code 0x80200000 BadIdentityTokenInvalid

exception: FlexSim::MyPLC

[support5CRPZ]

The error looks like your process flow setting about OPC UA connection. The exact answer need your model uploaded.

[nitin_s]

There is no process flow in the model as of now. i am just trying to connect the MODEL to PLC using OPC UA credentials given to me. the configuration seems to be successful but while browsing to Node ID variables section it shows "Server Browse Error" and pops with above exception error

[support5CRPZ]

If you connected to the OPC UA server successfully, you can browse the server name and tag id.

[nitin_s]

but it isn't showing any server name in node ID even after successful connection.. any idea??

[nitin_s]

@Steven Hamoen , @Phil BoBo , @Logan Gold

can you redirect me to the concerned person for my query?

[arunTTT2P]

Please show the screenshot of the connections tab.

[nitin_s]

Configurations is successful as you can see below:

Do we need to install and configure the above using third party software to communicate with PLC as mentioned in your OPC UA Server example (https://docs.flexsim.com/en/23.0/Reference/Tools/Emulation/ConnectingToOpcUA/ConnectingToOpcUA.html)

[arunTTT2P]

If you are using v23, then you need an emulation license. Modbus and OPC DA connections are freely available. The other connection types require an Emulation license.

https://docs.flexsim.com/en/23.0/Reference/Tools/Emulation/EmulationOverview/EmulationOverview.html

If you don't have an emulation license, you can go back to an older version and test the connection like Flexsim 2022 Update 2,update 1 etc

[nitin_s]

I am using FlexSim v22 and testing emulation on the same

[arunTTT2P]

You may try connecting with the third-party OPC server.

[support5CRPZ]

The connected your OPC UA server was made by you, you need first to connect to it using a client application not FlexSim.

When I connected to the third-party UA server and my developed UA server using FlexSim 22.2., all was OK.

Your OPC UA server need to be checked again using anther client program.

[jason_lightfootVL7B4]

For example UA Expert.

[lcavallero]

If correctly understand you installed the KEPServerEX 6 OPC-UA server, as mentioned into the FlexSim documentation.

I suppose that they are some configuration that inhibit the connection.

Could you share the configuration of your server?

[nitin_s]

i am using KEPServerEX 6 OPC-UA server connection

[nitin_s]

Please find the configuration snap for OPC UA. so we have tried the default as well as ethernet option. i believe that we may have to change server address as it is not getting reflected in the configuration. unfortunately there is no option to change the server address/IP

[lcavallero]

Hi Sharan,

thanks for the information, I'll try to replicate your configuration in order to better investigate your issue.

[lcavallero]

Hi Sharan,

The message "BadIdentityTokenInvalid " refer to a invalid username or password you provided in the connection configuration when using "User Identify" set to "User Name"

The "Check configuration" button verify that the provided configuration is supported by the OPC UA server, but doesn't check username/password validity.

Username/password are sent to the OPC UA server when FlexSim establish a new connection like when you run a simulation, or, as you experimented, browse the servers.

Let me know if this solve your problem.

[sudhir_l]

Hello Luciano,

Thanks for the revert. Filling in for Nitin
We tried the same user name and password while connecting to the PLC via UA Expert.

We were able to make successful connection with the same credentials. I don't know why we are not able to do the same with Flexsim. The credentials have been double checked.

Are we missing something here?

[Jeanette_Fullmer]

Hello @Luciano Cavallero, are you able to provides support for this?