{
  "metadatas": [
    {
      "metadataId": "MD_TEMP_001",
      "name": "主管道温度",
      "description": "由两个寄存器组合得到温度",
      "domain": "PROCESS_PARAM",
      "semanticType": "FLOAT64",
      "unit": "C",
      "minValue": -40.0,
      "maxValue": 180.0,
      "deadband": 0.1,
      "isWriteable": false
    },
    {
      "metadataId": "MD_PRESS_001",
      "name": "主管道压力",
      "description": "由两个寄存器组合得到压力",
      "domain": "PROCESS_PARAM",
      "semanticType": "FLOAT64",
      "unit": "MPa",
      "minValue": 0.0,
      "maxValue": 25.0,
      "deadband": 0.01,
      "isWriteable": false
    }
  ]
}