little misunderstanding with the OPCUA Events

[Lexustwo]

Hello there,

I apologize if my English is a bit broken. I’m new to Rapid SCADA, and I’ve decided to try it with a distant OPC UA server.

However, I’m unsure how to configure Rapid SCADA to receive events from the server. I’ve already explored the solution mentioned in this link:”https://rapidscada.org/connecting-devices-using-opc-standard/”

The challenge is that my OPC UA server is installed on an injection press, so I can’t simply install another instance.

If you have any ideas or need further clarification, please feel free to ask

[Mikhail]

Hello,
It is possible to connect to a remote OPC UA server.
Please write in more detail, what difficulties did you encounter?

[Lexustwo]

I can connect to the remote OPC UA server and get some data, my major issue is that the data i want to collect is asynchronous (you subscribe to an event and it will be send each time the value changes). in facts it sends all the cycle data in one event type response.

is there a way to subscribe to an event in RapidScada or can you only send a request at a set timing ?

[Mikhail]

The OPC UA driver subscribes for data, and receives data in async mode when data comes from the OPC UA server. The driver does not send requests each time to read data.

> in facts it sends all the cycle data in one event type response.
Could you copy the example from the communication line log?

[Lexustwo]

unfortunately no because i can’t subscribe to the general node where the event can be activated.

in theory, it works like this:

If events are supported, the root node of the specific interface (e.g. IMM_MES_Interface for OPC 40077) shall
set the SubscribeToEvents flag in the EventNotifier attribute.

you could get more detail on the euromap 83 datasheet

[Mikhail]

If you provide screenshots from any OPC UA client that does what you need, it can help.

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