Getting Started with OPC-UA and Node-RED

OPC-UA is a popular communication protocol used to communicate industrial data between different types of hardware and software. Many of the popular industrial automation PLCs vendors support an OPC server running on their hardware. Node-RED is a great low-code platform for creating an OPC client to consume the data from these PLCs.
In this webinar, we will introduce the OPC-UA nodes for creating an OPC client in Node-RED and take you through the steps to read data from an OPC server and visualize the data in Node-RED. Leading our webinar this month will be Mika Karaila, Research Director at Valmet Automation and creator of the Node-RED OPC-UA nodes. Mika will demonstrate how to get started with the OPC-UA nodes and discuss the different options for interacting between an OPC client and server.

[@zinkowin8335]

Could you share those sample projects? if you do not mind, Please share me to learn.

[@GreyDziuba]

The sample projects can be found either in the guthub repository for the project or the shared library. Click import from the menu and on the left hand side you will navigate to the opc library.

[@СвятославЄвдокімов]

Thanks for information. Very well!

[@damianagonzales5164]

Hi, thank you for this video. I have a couple questions.
1. How can I browse and return only the logic names of and OPC UA folder / tags items?
2. How can I unsubscribe to a tag item in an active flow after subscribing?

[@TamzRod]

when i create multiple folder, the folder goes inside the previews folder. how can i set it to root folder?

[@raulmarina9928]

Muy buen video. Consulta: Como ejecutas el comando node-red en la consola? Me sale este error:
29 Jul 11:09:59 - [info] Starting flows
29 Jul 11:09:59 - [info] Started flows
14:10:00.441Z :verify_pcks1 :54 [NODE-OPCUA-W27] node version v20.16.0
14:10:00.442Z :verify_pcks1 :55 you need to use node flag --security-revert=CVE-2023-46809 if you have issue with RSA PKCS#1 v1.5
29 Jul 11:10:00 - [error] [OpcUa-Server:a4dcf65211d0c475] Server node error on: error: "Server is not running"
29 Jul 11:10:00 - [error] [OpcUa-Server:a4dcf65211d0c475] Server node error on: error: "Server is not running"
29 Jul 11:10:00 - [error] [OpcUa-Server:a4dcf65211d0c475] Server node error on: error: "Server is not running"

[@FlowFuseInc]

Hola Raul, nos alegra que te haya gustado el vídeo.
Para ejecutar el comando node-red en la consola y resolver el error que mencionas, te recomiendo que intentes lo siguiente:
1. Inicia Node-RED con el siguiente comando: node-red -v OPCUAServer_Flow.json
Esto debería ayudarte a diagnosticar el problema viendo el output.
2. Si el problema persiste, puede ser útil revisar este issue en GitHub: github.com/mikakaraila/node-red-contrib-opcua/issues/281
3. Si la información en GitHub no resuelve tu problema, te sugiero que crees un nuevo issue en ese repositorio. Así, el equipo de desarrollo y la comunidad pueden ayudarte de manera más directa.
¡Espero que esto te sea de ayuda!

[@raulmarina9928]

@@FlowFuseInc Muchas gracias por la respuesta. Voy a correrlo con ese parámetro y cualquier cosa entro al hilo que me mencionas. Un cordial saludo y nuevamente GRACIAS!!

[@dodiksurya1481]

how to change password for authentication

[@bachphi1]

This is NOT a video of 'getting Started ...'

[@garrylove8955]

@Node-Grey shorter videos definitely. Mika Karaila did a great job explaining everything and their continued development on the node-red opc ua application is really appreciated. That said, a 15 minute video showing you how to set up and extract PLC data would be much better as a getting started video. The level of detail here, while appreciated is harder to digest

[@FlowFuseInc]

@@garrylove8955, @bachphi1 Checkout this blog for a getting started. Let me know your thoughts. flowfuse.com/blog/2024/02/connect-node-red-to-kepware-opc/

[@mtokodarryl]

@@FlowFuseInc I have just read your latest blog post on OPC and used the examples to browser an OPC UA server for a work project. It did take some trial and error but after a few tries it worked great. Thanks for all the effort to put this together, it just takes some determination and tests to get it working. I have a much better understanding for future projects

[@FlowFuseInc]

@@mtokodarryl Thank you for your feedback! We're glad to hear that the examples helped you with your project.