Model File Format

See also

The Xentara Model File in the Xentara user manual

A JSON object describing OPC UA Client has the following syntax:

{
  "@IOComponent.OPCUAClient.Connection":
  {
    "id": "Server",
    "uuid": "e34e4bcb-cfe1-434a-b37f-13e232aa3649",
    "endpointUrl": "opc.tcp://opc-client:50000",
    "children": [ 
      {
        "@IO.OPCUAClient.Node": {
          "id": "SlowUInt1", 
          "uuid": "c44779bb-0ce0-46dd-8e35-03271c5451ec",
          "nodeId": "ns=2;s=Temperature",
          "dataType": "UInt32"
        }
      }
    ]
  }
}

Object Members

id	A string value containing the ID of the OPC UA Client. The ID is used to construct the OPC UA Client’s primary key.
uuid	A string value containing the unique UUID of the OPC UA Client.
endpointUrl	A string value containing the URL to the the OPC UA Server.
userName	A username for the server (optional)
password	A password for the server (optional)
children	A JSON Array of OPC UA Nodes at the server, to which the client subscribes.

Node

id	A string value containing the ID of the OPC UA Node. The ID is used to construct the OPC UA Node’s primary key.
uuid	A string value containing the unique UUID of the OPC UA Node.
nodeId	OPC UAs internal namespace index and identifier type in format: ns=<namespaceIndex>;<identifiertype>=<identifier>
dataType	One of the OPC UA numerical Datatypes Sbyte, Byte, Int16, Uint16, Int32, Uint32, Int64, Uint64, Float, Double