{
  "schemaVersion": 1,
  "mappings": [
    {
      "name": "Pressure",
      "source": { "kind": "nodeId", "value": "ns=2;s=Pressure" },
      "dataType": "Double",
      "shape": "scalar",
      "topic": "USEPI/examples/opc/pump-1",
      "signalId": "pressure",
      "payloadFormat": "usepi",
      "enabled": true,
      "retain": true
    }
  ]
}