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Connecting OPC UA

Read Data from OPC UA Server​

  1. In Source Flow, drag an inject node.
  2. Double-click the node, and then enter the NodeId from your OPC UA server.
  1. Drag an OpcUa-Client node, and then double-click it.
  2. Click next to Endpoint to enter the information of your OPC UA server.
  1. Click Add, and set Action to READ.
  2. Leave everything else as default, and then click Done.
  1. Connect the inject node to the OpcUa-Client node, and then connect a debug node at the end.
  2. Click Deploy at the upper-right corner, and then click inject node to trigger the flow.

Subscribing Data from OPC UA Server​

  1. In Source Flow, drag an inject node.
  2. Double-click the node, and then enter the NodeId from your OPC UA server.
  • msg.payload:
[
    {
        "nodeId": "ns=2;i=1001",
        "datatype": "Int32"
    },
    {
        "nodeId": "ns=2;i=1002",
        "datatype": "Int32"
    }
]
  • msg.topic: multiple
  1. Drag an OpcUa-Client node, and then double-click it.
  2. Click next to Endpoint to enter the information of your OPC UA server.
  1. Click Add, and set Action to SUBSCRIBE.
  2. Set the subscription interval, and leave everything else as default, and then click Done.
  1. Connect the inject node to the OpcUa-Client node, and then connect a debug node at the end.
  2. Click Deploy at the upper-right corner, and then click inject node to trigger the flow.