Anyone had manage to do OPC connection with Unreal Engine?

GPizarro90 · July 26, 2019, 4:44am

Hi
Hi evaluating the posibility to view data in real time from OPC servers on Unreal Engine and used emulate what its happening in the process (for example water level on a tank)
There is a way of doing this?
Thx in advance for any help or info about this!!

Sanchez1139 · April 8, 2020, 9:15pm

Hi, I know this thread is really old, but did you ever come up with a solution to this, i also need OPC connectivity to UE4 ?

Thanks in advance

CMTech · October 3, 2020, 12:02am

Hi, I managed to get an OPC-UA connection working but I had to do it with UnrealEnginePython using the FreeOPCUA project examples. I did it this way as I had no idea how to do this in C++. As UnrealEnginePython has been put on hold it would be great to see an implementation in C++ or a plug-in. There are a few open source C++ libraries for OPC-UA available.

CMTech · October 3, 2020, 12:08am

Just spotted this if it is any help…

gist.github.com

https://gist.github.com/daje770729/04b55b1601a7f84e4721da8bd3e53609

OpcUaClientBPLibrary.cpp

// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.

#pragma once

#include "OpcUaClientBPLibrary.h"
#include "OpcUaClient.h"
#include "open62541.h"

static UA_Client *client;

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OpcUaClientBPLibrary.h

// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.

#pragma once

#include "Kismet/BlueprintFunctionLibrary.h"
#include "OpcUaClientBPLibrary.generated.h"

/* 
*	Function library class.
*	Each function in it is expected to be static and represents blueprint node that can be called in any blueprint.

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anonymous_user_1a55bc9d1 · December 9, 2021, 6:02pm

I managed to get this code working. Here is complete project that you can hopefully import to your projects. This enables OPCUA function utilization from Blueprints:

I hope it is ok by Epic that OpcUAClientBPLibrary.cpp and OpcUAClientBPLibrary.h have copyright by Epic.

Amilcare_DP · August 19, 2022, 7:01am

Hi @anonymous_user_1a55bc9d1 could you help me also with this?

y.owj · March 21, 2023, 10:57am

I have UE4 project which i need to connect using OPC. I also have OPC Server (TOP Server 5.21). Is your addon provides this feature? Features i need are connect/disconnect, read/write and “connection lost” check

eray_ozr · March 21, 2023, 10:27pm

My plugin has these features

Cross platform
Async Read and Write (boolean, byte, sbyte, float, double, int16/32/64, string… including their timestamps, data name and descriptions)
Historical data access
Multiple Server Connection
Secure connection (username, signed, signed & encrypt)
Runtime certificate creation (not temporary certificate from open62541. a real certificate file) which compatible with OPC UA v1.04 protocols.

I don’t have “check connection” feature specifically because all client libraries already have UA_Status variable. When you want to connect an invalid server, you will get UA_STATUS_BAD. When you want to read or write a node to/from disconnected server, you will also get an error. All these errors have their stringified returns.

But if you want it as a server health check, it can make senses. I just didn’t think about it.

The problem is, I am not consider sharing or publishing it right now.

smudgy67 · September 6, 2023, 7:29am

Hey eray_ozr,

Well done on the plugin.
Is it available for UE5.2 as well, please?

All the best,

Smudgy

eray_ozr · September 6, 2023, 9:45am

Yes but it is closed source and I don’t consider to share it freely. If there is enough request, I can think to create a product based on monthly/yearly subscriptions.
I wrote details to here.