OPC UA client and server with a simple graphical interface for Node-RED. Fully parameterized in JSON.

It supports the following OPC UA items on only 3 nodes.

• alarms
• events
• events read and write tags in server(See which tags are being written to or read from the client directly on the server in a simple workflow)
• methods(write methods in node-red flow)
• variables
• variables arrays
• description and displayname nodes
• objects
• simple objectsType
• custom namespace
• custom nodeID
• Subscription Variables and events in client

Server editor

Client editor

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example json server config

{
    "objects": [],
    "folders": [
        {
            "name": "MyServer",
            "displayName": "",
            "description": "",
            "nodeId": "",
            "namespaceId": 2,
            "objectsType": "",
            "folders": [
                {
                    "name": "newFolder",
                    "displayName": "",
                    "description": "",
                    "nodeId": "",
                    "namespaceId": 2,
                    "objectsType": "",
                    "folders": [],
                    "objects": [],
                    "variables": [
                        {
                            "name": "newVariable",
                            "type": "Int32",
                            "value": "",
                            "access": "readwrite",
                            "description": "",
                            "displayName": "",
                            "nodeId": "",
                            "namespaceId": 2
                        }
                    ],
                    "alarms": [],
                    "methods": [],
                    "objectsTypes": []
                }
            ],
            "objects": [
                {
                    "name": "newObject",
                    "displayName": "",
                    "description": "",
                    "nodeId": "",
                    "namespaceId": 2,
                    "objectsType": "",
                    "folders": [],
                    "objects": [],
                    "variables": [
                        {
                            "name": "newVariable",
                            "type": "Int32",
                            "value": "",
                            "access": "readwrite",
                            "description": "",
                            "displayName": "",
                            "nodeId": "",
                            "namespaceId": 2
                        }
                    ],
                    "alarms": [],
                    "methods": [],
                    "objectsTypes": []
                }
            ],
            "variables": [
                {
                    "name": "newVariable",
                    "type": "Int32",
                    "value": "",
                    "access": "readwrite",
                    "description": "",
                    "displayName": "",
                    "nodeId": "",
                    "namespaceId": 2
                }
            ],
            "alarms": [],
            "methods": [
                {
                    "name": "newMethod",
                    "description": "",
                    "displayName": "",
                    "nodeId": "",
                    "namespaceId": 2,
                    "inputs": [],
                    "outputs": []
                }
            ],
            "objectsTypes": []
        }
    ],
    "objectsTypes": [],
    "nameSpaces": [
        {
            "id": 2,
            "name": "urn:node-red:opc-ua-server"
        }
    ]
}

Disclaimer This node was only used in simulation and testing environments.