{
  "protocol_name": "高压B母线状态反馈",
  "message_id": "0x0007",
  "length": 36,
  "checksum": {
    "start_offset": 0,
    "end_offset": 34,
    "algorithm": "sum_low_byte"
  },
  "fields": [
    {
      "name": "start1",
      "offset": 0,
      "type": "uint8",
      "value": "0x20",
      "description": "起始字节1"
    },
    {
      "name": "start2",
      "offset": 1,
      "type": "uint8",
      "value": "0x20",
      "description": "起始字节2"
    },
    {
      "name": "id",
      "offset": 2,
      "type": "uint16",
      "value": "0x0007",
      "description": "消息ID"
    },
    {
      "name": "length",
      "offset": 4,
      "type": "uint16",
      "value": 36,
      "description": "消息长度（包含校验码）"
    },
    {
      "name": "lithiumBatteryGroupInstrumentCircuitBreaker",
      "offset": 6,
      "type": "uint8",
      "description": "锂电池组仪表断路器"
    },
    {
      "name": "bowLowVoltageDistributionBoxCircuitBreaker",
      "offset": 7,
      "type": "uint8",
      "description": "艏部低压配电箱断路器"
    },
    {
      "name": "unit4InstrumentDC48VCircuitBreaker",
      "offset": 8,
      "type": "uint8",
      "description": "单元4仪表DC48V断路器"
    },
    {
      "name": "dcC1DCDistributionPanelCircuitBreaker",
      "offset": 9,
      "type": "uint8",
      "description": "DC C1直流配电板断路器"
    },
    {
      "name": "reservedCircuitBreaker1",
      "offset": 10,
      "type": "uint8",
      "description": "备用断路器1"
    },
    {
      "name": "reservedCircuitBreaker2",
      "offset": 11,
      "type": "uint8",
      "description": "备用断路器2"
    },
    {
      "name": "emergencyLithiumBatteryGroup2CircuitBreaker",
      "offset": 12,
      "type": "uint8",
      "description": "应急锂电池组2断路器"
    },
    {
      "name": "instrumentPowerFailureSignal",
      "offset": 13,
      "type": "uint8",
      "description": "仪表电源故障信号"
    },
    {
      "name": "emergencyPowerFailureSignal",
      "offset": 14,
      "type": "uint8",
      "description": "应急电源故障信号"
    },
    {
      "name": "instrumentBusbarVoltage",
      "offset": 15,
      "type": "uint16",
      "description": "仪表母线电压（V）"
    },
    {
      "name": "bowLowVoltageDistributionBoxCurrent",
      "offset": 17,
      "type": "uint16",
      "description": "艏部低压配电箱电流（A）"
    },
    {
      "name": "dcC1InstrumentDC48VCurrent",
      "offset": 19,
      "type": "uint16",
      "description": "DC C1仪表DC48V电流（A）"
    },
    {
      "name": "reservedCurrent1",
      "offset": 21,
      "type": "uint16",
      "description": "备用电流1（A）"
    },
    {
      "name": "emergencyLithiumBatteryGroup2Current",
      "offset": 23,
      "type": "uint16",
      "description": "应急锂电池组2电流（A）"
    },
    {
      "name": "lithiumBatteryGroupInstrumentCurrent",
      "offset": 25,
      "type": "uint16",
      "description": "锂电池组仪表电流（A）"
    },
    {
      "name": "unit4InstrumentDC48VCurrent",
      "offset": 27,
      "type": "uint16",
      "description": "单元4仪表DC48V电流（A）"
    },
    {
      "name": "reservedCurrent2",
      "offset": 29,
      "type": "uint16",
      "description": "备用电流2（A）"
    },
    {
      "name": "emergency2BusbarVoltage",
      "offset": 31,
      "type": "uint16",
      "description": "应急2母线电压（V）"
    },
    {
      "name": "compositeEnergyManagementSystemEmergencyDC48VCurrent",
      "offset": 33,
      "type": "uint16",
      "description": "综合能源管理系统应急DC48V电流（A）"
    }
  ]
}