GB/T 32960 Gateway Data Exchange Format

The GB/T 32960 gateway (emqx_gbt32960) bridges GB/T 32960-compliant electric vehicle terminals to EMQX over MQTT. This page defines the JSON message format used for that data exchange.

Protocol Version Support

The gateway supports both gbt32960-2016 and gbt32960-2025 protocol versions. The protocol version is automatically detected from the frame header:

• gbt32960-2016: Frame header is 0x23 0x23 (ASCII ##)
• gbt32960-2025: Frame header is 0x24 0x24 (ASCII $$)

Where fields or behaviors differ between versions, this document notes those differences explicitly.

Convention

• Payload is assembled in JSON format.
• JSON key names use UpperCamelCase (PascalCase).

Upstream

Data flow: Terminal → emqx_gbt32960 → EMQX

Vehicle Login

Topic: gbt32960/${vin}/upstream/vlogin

// gbt32960-2016
{
    "Cmd": 1,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "ICCID": "12345678901234567890",
        "Id": "C",
        "Length": 1,
        "Num": 1,
        "Seq": 1,
        "Time": {
            "Day": 29,
            "Hour": 12,
            "Minute": 19,
            "Month": 12,
            "Second": 20,
            "Year": 12
        }
    }
}

// gbt32960-2025
{
    "Cmd": 1,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "ICCID": "12345678901234567890",
        "Seq": 1,
        "Time": {
            "Day": 29,
            "Hour": 12,
            "Minute": 19,
            "Month": 12,
            "Second": 20,
            "Year": 12
        },
        "BmsNum": 2,
        "BatteryPackCounts": [1, 2],
        "BatteryPackEncodings": [ ["encoding-string-bms1-pack1"], ["encoding-string-bms2-pack1", "encoding-string-bms2-pack2"] ]
    }
}

Top-level fields:

Field	Type	Description
Cmd	Integer	Command identifier; 1 means Vehicle Login
Encrypt	Integer	Data encryption method: 1 = no encryption, 2 = RSA, 3 = AES128; 254 = error; 255 = invalid
Vin	String	Vehicle Identification Number (VIN)
Data	Object	Data unit, JSON object format

Data fields for gbt32960-2016:

Field	Type	Description
Time	Object	Data collection time (Year, Month, Day, Hour, Minute, Second)
Seq	Integer	Login sequence number
ICCID	String	20-character SIM card ICCID
Num	Integer	Number of rechargeable energy storage sub-systems; valid range 0–250
Length	Integer	Encoding length of rechargeable energy storage systems; valid range 0–50
Id	String	System encodings; length = Num × Length

Data fields for gbt32960-2025:

Field	Type	Description
Time	Object	Data collection time (Year, Month, Day, Hour, Minute, Second)
Seq	Integer	Login sequence number
ICCID	String	20-character SIM card ICCID
BmsNum	Integer	Number of battery management systems
BatteryPackCounts	Array	Number of battery packs managed by each BMS
BatteryPackEncodings	Array<Array<String>>	Battery pack encoding lists per BMS; each encoding is a 24-character string

Vehicle Logout

Topic: gbt32960/${vin}/upstream/vlogout

The Cmd value is 4. All other fields follow the same structure as Vehicle Login:

{
    "Cmd": 4,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Seq": 1,
        "Time": {
            "Day": 1,
            "Hour": 2,
            "Minute": 59,
            "Month": 1,
            "Second": 0,
            "Year": 16
        }
    }
}

Real-Time Data Report

Topic: gbt32960/${vin}/upstream/info

Each report can include multiple info items in the Infos array. The Type field distinguishes the info type.

Vehicle Data

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "AcceleratorPedal": 90,
                "BrakePedal": 0,
                "Charging": 1,
                "Current": 15000,
                "DC": 1,
                "Gear": 5,
                "Mileage": 999999,
                "Mode": 1,
                "Resistance": 6000,
                "SOC": 50,
                "Speed": 2000,
                "Status": 1,
                "Type": "Vehicle",
                "Voltage": 5000
            }
        ],
        "Time": {
            "Day": 1,
            "Hour": 2,
            "Minute": 59,
            "Month": 1,
            "Second": 0,
            "Year": 16
        }
    }
}

Field	Type	Description
Type	String	Info type; Vehicle for this structure
Status	Integer	Vehicle status: 1 = running; 2 = stalled; 3 = other; 254 = error; 255 = invalid
Charging	Integer	Charge state: 1 = parked charging; 2 = driving charging; 3 = not charging; 4 = charge complete; 254 = error; 255 = invalid
Mode	Integer	Operating mode: 1 = pure electric; 2 = hybrid; 3 = fuel; 254 = error; 255 = invalid
Speed	Integer	Vehicle speed; valid range 0–2200 (0–220.0 km/h); unit: 0.1 km/h
Mileage	Integer	Cumulative mileage; valid range 0–9,999,999 (0–999,999.9 km); unit: 0.1 km
Voltage	Integer	Total voltage; valid range 0–10000 (0–1000 V); unit: 0.1 V
Current	Integer	Total current; valid range 0–20000 (offset 1000, representing -1000 A to +1000 A); unit: 0.1 A
SOC	Integer	State of charge; valid range 0–100 (0%–100%)
DC	Integer	DC/DC status: 1 = working; 2 = disconnected; 254 = error; 255 = invalid
Gear	Integer	Gear position; integer representation of the gear table (see protocol Table A.1)
Resistance	Integer	Insulation resistance; valid range 0–60000 (0–60000 kΩ)
AcceleratorPedal	Integer	gbt32960-2016 only: Accelerator pedal travel; valid range 0–100
BrakePedal	Integer	gbt32960-2016 only: Brake pedal state; valid range 0–100

Drive Motor Data

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "Motors": [
                    {
                        "CtrlTemp": 125,
                        "DCBusCurrent": 31203,
                        "InputVoltage": 30012,
                        "MotorTemp": 125,
                        "No": 1,
                        "Rotating": 30000,
                        "Status": 1,
                        "Torque": 25000
                    },
                    {
                        "CtrlTemp": 125,
                        "DCBusCurrent": 30200,
                        "InputVoltage": 32000,
                        "MotorTemp": 145,
                        "No": 2,
                        "Rotating": 30200,
                        "Status": 1,
                        "Torque": 25300
                    }
                ],
                "Number": 2,
                "Type": "DriveMotor"
            }
        ],
        "Time": {
            "Day": 1,
            "Hour": 2,
            "Minute": 59,
            "Month": 1,
            "Second": 0,
            "Year": 16
        }
    }
}

Field	Type	Description
Type	String	Info type; DriveMotor for this structure
Number	Integer	Number of drive motors; valid range 1–253
Motors	Array	List of drive motor data

Motor entry fields:

Field	Type	Description
No	Integer	Motor sequence number; valid range 1–253
Status	Integer	Motor status: 1 = consuming power; 2 = generating; 3 = off; 4 = ready; 254 = error; 255 = invalid
CtrlTemp	Integer	Controller temperature; valid range 0–250 (offset 40°C, -40°C to +210°C); unit: 1°C
Rotating	Integer	Rotor speed; valid range 0–65531 (offset 20000, -20000 to 45531 r/min); unit: 1 r/min
Torque	Integer	gbt32960-2016: motor torque; valid range 0–65531 (offset 20000, -2000 to 4553.1 N·m); unit: 0.1 N·m gbt32960-2025: motor torque; valid range 0–429496729 (offset 200000, -20000 to 229496.729 N·m); unit: 0.001 N·m
MotorTemp	Integer	Motor temperature; valid range 0–250 (offset 40°C, -40°C to +210°C); unit: 1°C
InputVoltage	Integer	gbt32960-2016 only: Controller input voltage; valid range 0–60000 (0–6000 V); unit: 0.1 V
DCBusCurrent	Integer	gbt32960-2016 only: DC bus current; valid range 0–20000 (offset 1000 A, -1000 A to +1000 A); unit: 0.1 A

Fuel Cell Data

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "CellCurrent": 12000,
                "CellVoltage": 10000,
                "DCStatus": 1,
                "FuelConsumption": 45000,
                "H_ConcSensorCode": 11,
                "H_MaxConc": 35000,
                "H_MaxPress": 500,
                "H_MaxTemp": 12500,
                "H_PressSensorCode": 12,
                "H_TempProbeCode": 10,
                "ProbeNum": 2,
                "ProbeTemps": [120, 121],
                "Type": "FuelCell"
            }
        ],
        "Time": {
            "Day": 1,
            "Hour": 2,
            "Minute": 59,
            "Month": 1,
            "Second": 0,
            "Year": 16
        }
    }
}

Field	Type	Description
Type	String	Info type; FuelCell for this structure
CellVoltage	Integer	gbt32960-2016 only: Fuel cell voltage; valid range 0–20000 (0–2000 V); unit: 0.1 V
CellCurrent	Integer	gbt32960-2016 only: Fuel cell current; valid range 0–20000 (0–2000 A); unit: 0.1 A
FuelConsumption	Integer	gbt32960-2016 only: Fuel consumption rate; valid range 0–60000 (0–600 kg/100km); unit: 0.01 kg/100km
ProbeNum	Integer	gbt32960-2016 only: Total number of fuel cell probes; valid range 0–65531
ProbeTemps	Array	gbt32960-2016 only: Temperature values for each fuel cell probe
H_MaxTemp	Integer	Max hydrogen system temperature; valid range 0–2400 (offset 40°C, -40°C to +200°C); unit: 0.1°C
H_TempProbeCode	Integer	Probe code for max hydrogen temperature; valid range 1–252
H_MaxConc	Integer	Max hydrogen concentration; valid range 0–60000 (0–50000 mg/kg); unit: 1 mg/kg
H_ConcSensorCode	Integer	Sensor code for max hydrogen concentration; valid range 1–252
H_MaxPress	Integer	Max hydrogen pressure; valid range 0–1000 (0–100 MPa); unit: 0.1 MPa
H_PressSensorCode	Integer	Sensor code for max hydrogen pressure; valid range 1–252
DCStatus	Integer	High-voltage DC/DC status: 1 = working; 2 = disconnected
RemainingH2	Integer	gbt32960-2025 only: Remaining hydrogen in the hydrogen system; unit: 1 kg
DCDCTemp	Integer	gbt32960-2025 only: High-voltage DCDC temperature; offset 40°C, -40°C to +210°C

Engine Data

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "CrankshaftSpeed": 2000,
                "FuelConsumption": 200,
                "Status": 1,
                "Type": "Engine"
            }
        ],
        "Time": {
            "Day": 1,
            "Hour": 22,
            "Minute": 59,
            "Month": 10,
            "Second": 0,
            "Year": 16
        }
    }
}

Field	Type	Description
Type	String	Info type; Engine for this structure
Status	Integer	gbt32960-2016 only: Engine status: 1 = running; 2 = off
CrankshaftSpeed	Integer	Crankshaft speed; valid range 0–60000 (0–60000 r/min); unit: 1 r/min
FuelConsumption	Integer	gbt32960-2016 only: Fuel consumption rate; valid range 0–60000 (0–600 L/100km); unit: 0.01 L/100km

Vehicle Location Data

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "Latitude": 100,
                "Longitude": 10,
                "Status": 0,
                "Type": "Location"
            }
        ],
        "Time": {
            "Day": 1,
            "Hour": 22,
            "Minute": 59,
            "Month": 10,
            "Second": 0,
            "Year": 16
        }
    }
}

Field	Type	Description
Type	String	Info type; Location for this structure
Status	Integer	Position status; integer value of all status bits (see protocol Table 15)
CoordinateSystem	Integer	gbt32960-2025 only: Coordinate system: 1 = WGS-84; 2 = GCJ-02
Longitude	Integer	Longitude in degrees × 10^6; accurate to one millionth of a degree
Latitude	Integer	Latitude in degrees × 10^6; accurate to one millionth of a degree

Extreme Value Data

gbt32960-2016 only

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "MaxBatteryVoltage": 7500,
                "MaxTemp": 120,
                "MaxTempProbeNo": 12,
                "MaxTempSubsysNo": 14,
                "MaxVoltageBatteryCode": 10,
                "MaxVoltageBatterySubsysNo": 12,
                "MinBatteryVoltage": 2000,
                "MinTemp": 40,
                "MinTempProbeNo": 13,
                "MinTempSubsysNo": 15,
                "MinVoltageBatteryCode": 11,
                "MinVoltageBatterySubsysNo": 13,
                "Type": "Extreme"
            }
        ],
        "Time": {
            "Day": 30,
            "Hour": 12,
            "Minute": 22,
            "Month": 5,
            "Second": 59,
            "Year": 17
        }
    }
}

Field	Type	Description
Type	String	Info type; Extreme for this structure
MaxVoltageBatterySubsysNo	Integer	Sub-system number with highest battery voltage; valid range 1–250
MaxVoltageBatteryCode	Integer	Battery cell code with highest voltage; valid range 1–250
MaxBatteryVoltage	Integer	Highest individual cell voltage; valid range 0–15000 (0–15 V); unit: 0.001 V
MinVoltageBatterySubsysNo	Integer	Sub-system number with lowest battery voltage; valid range 1–250
MinVoltageBatteryCode	Integer	Battery cell code with lowest voltage; valid range 1–250
MinBatteryVoltage	Integer	Lowest individual cell voltage; valid range 0–15000 (0–15 V); unit: 0.001 V
MaxTempSubsysNo	Integer	Sub-system number with highest temperature; valid range 1–250
MaxTempProbeNo	Integer	Probe number with highest temperature; valid range 1–250
MaxTemp	Integer	Highest temperature; valid range 0–250 (offset 40, -40°C to +210°C)
MinTempSubsysNo	Integer	Sub-system number with lowest temperature; valid range 1–250
MinTempProbeNo	Integer	Probe number with lowest temperature; valid range 1–250
MinTemp	Integer	Lowest temperature; valid range 0–250 (offset 40, -40°C to +210°C)

Alarm Data

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "FaultChargeableDeviceNum": 1,
                "FaultChargeableDeviceList": ["00C8"],
                "FaultDriveMotorNum": 0,
                "FaultDriveMotorList": [],
                "FaultEngineNum": 1,
                "FaultEngineList": ["006F"],
                "FaultOthersNum": 0,
                "FaultOthersList": [],
                "GeneralAlarmFlag": 3,
                "MaxAlarmLevel": 1,
                "Type": "Alarm"
            }
        ],
        "Time": {
            "Day": 20,
            "Hour": 22,
            "Minute": 23,
            "Month": 12,
            "Second": 59,
            "Year": 17
        }
    }
}

Field	Type	Description
Type	String	Info type; Alarm for this structure
MaxAlarmLevel	Integer	Highest alarm level. gbt32960-2016: valid range 0–3 ("0" = no fault, "1" = level 1 fault). gbt32960-2025: valid range 0–4, new value "4" = thermal event fault
GeneralAlarmFlag	Integer	General alarm flag bits (see protocol Table 18)
FaultChargeableDeviceNum	Integer	Total faults in rechargeable energy storage devices; valid range 0–252
FaultChargeableDeviceList	Array	Fault code list for rechargeable energy storage devices
FaultDriveMotorNum	Integer	Total drive motor faults; valid range 0–252
FaultDriveMotorList	Array	Drive motor fault code list
FaultEngineNum	Integer	Total engine faults; valid range 0–252
FaultEngineList	Array	Engine fault code list
FaultOthersNum	Integer	Total other faults
FaultOthersList	Array	Other fault code list
FaultGeneralNum	Integer	gbt32960-2025 only: Total general fault count
FaultGeneralList	Array	gbt32960-2025 only: General fault list; each entry is a JSON object {"No": integer, "Level": integer}

Rechargeable Energy Storage Voltage Data

gbt32960-2016 only

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "Number": 2,
                "SubSystems": [
                    {
                        "CellsTotal": 2,
                        "CellsVoltage": [5000],
                        "ChargeableCurrent": 10000,
                        "ChargeableSubsysNo": 1,
                        "ChargeableVoltage": 5000,
                        "FrameCellsCount": 1,
                        "FrameCellsIndex": 0
                    },
                    {
                        "CellsTotal": 2,
                        "CellsVoltage": [5001],
                        "ChargeableCurrent": 10001,
                        "ChargeableSubsysNo": 2,
                        "ChargeableVoltage": 5001,
                        "FrameCellsCount": 1,
                        "FrameCellsIndex": 1
                    }
                ],
                "Type": "ChargeableVoltage"
            }
        ],
        "Time": {
            "Day": 1,
            "Hour": 22,
            "Minute": 59,
            "Month": 10,
            "Second": 0,
            "Year": 16
        }
    }
}

Field	Type	Description
Type	String	Info type; ChargeableVoltage for this structure
Number	Integer	Number of rechargeable energy storage sub-systems; valid range 1–250
SubSystems	Array	List of sub-system voltage data

Sub-system voltage fields:

Field	Type	Description
ChargeableSubsysNo	Integer	Sub-system number; valid range 1–250
ChargeableVoltage	Integer	Sub-system voltage; valid range 0–10000 (0–1000 V); unit: 0.1 V
ChargeableCurrent	Integer	Sub-system current; valid range 0–20000 (offset 1000 A, -1000 A to +1000 A); unit: 0.1 A
CellsTotal	Integer	Total number of battery cells; valid range 1–65531
FrameCellsIndex	Integer	Starting cell index (1-based) of the cells reported in this frame; valid range 1–65531. Frames are split when the total cell count exceeds 200 per frame.
FrameCellsCount	Integer	Number of cells in this frame; valid range 1–200
CellsVoltage	Array	Individual cell voltages; valid range 0–60000 (0–60.000 V); unit: 0.001 V

Rechargeable Energy Storage Temperature Data

gbt32960-2016 only

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "Number": 2,
                "SubSystems": [
                    {
                        "ChargeableSubsysNo": 1,
                        "ProbeNum": 10,
                        "ProbesTemp": [0, 0, 0, 0, 0, 0, 0, 0, 19, 136]
                    },
                    {
                        "ChargeableSubsysNo": 2,
                        "ProbeNum": 1,
                        "ProbesTemp": [100]
                    }
                ],
                "Type": "ChargeableTemp"
            }
        ],
        "Time": {
            "Day": 1,
            "Hour": 22,
            "Minute": 59,
            "Month": 10,
            "Second": 0,
            "Year": 16
        }
    }
}

Field	Type	Description
Type	String	Info type; ChargeableTemp for this structure
Number	Integer	Number of sub-systems in the temperature info list
SubSystems	Array	List of sub-system temperature data

Sub-system temperature fields:

Field	Type	Description
ChargeableSubsysNo	Integer	Sub-system number; valid range 1–250
ProbeNum	Integer	Number of temperature probes in this sub-system
ProbesTemp	Array	Temperature readings for each probe

Power Battery Pack Voltage Data

gbt32960-2025 only

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "Type": "MinVoltageOfPowerBattery",
                "Number": 2,
                "SubSystems": [
                    {
                        "BatteryPackNo": 1,
                        "BatteryPackVoltage": 3000,
                        "BatteryPackCurrent": 1000,
                        "MinParallelUnitTotal": 2,
                        "MinParallelUnitVoltage": [1200, 1201]
                    },
                    {
                        "BatteryPackNo": 2,
                        "BatteryPackVoltage": 3100,
                        "BatteryPackCurrent": 1100,
                        "MinParallelUnitTotal": 2,
                        "MinParallelUnitVoltage": [1300, 1301]
                    }
                ]
            }
        ],
        "Time": {
            "Day": 13,
            "Hour": 15,
            "Minute": 30,
            "Month": 11,
            "Second": 0,
            "Year": 25
        }
    }
}

Field	Type	Description
Type	String	MinVoltageOfPowerBattery
Number	Integer	Number of power battery packs
SubSystems	Array	List of battery packs
BatteryPackNo	Integer	Battery pack sequence number
BatteryPackVoltage	Integer	Battery pack voltage; unit: 0.1 V
BatteryPackCurrent	Integer	Battery pack current; offset 1000 A; unit: 0.1 A
MinParallelUnitTotal	Integer	Total number of minimum parallel units
MinParallelUnitVoltage	Array	Voltage list for minimum parallel units; offset 4 V; unit: 1 mV

Power Battery Pack Temperature Data

gbt32960-2025 only

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "Type": "TempOfPowerBattery",
                "Number": 2,
                "SubSystems": [
                    {
                        "BatteryPackNo": 1,
                        "ProbeNum": 5,
                        "ProbesTemp": [120, 121, 122, 123, 124]
                    },
                    {
                        "BatteryPackNo": 2,
                        "ProbeNum": 3,
                        "ProbesTemp": [130, 131, 132]
                    }
                ]
            }
        ],
        "Time": {
            "Day": 13,
            "Hour": 15,
            "Minute": 30,
            "Month": 11,
            "Second": 0,
            "Year": 25
        }
    }
}

Field	Type	Description
Type	String	TempOfPowerBattery
Number	Integer	Number of power battery packs
SubSystems	Array	List of battery packs
BatteryPackNo	Integer	Battery pack sequence number
ProbeNum	Integer	Number of temperature probes
ProbesTemp	Array	Probe temperature list; offset 40°C; unit: 1°C

Fuel Cell Stack Data

gbt32960-2025 only

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "Type": "FuelCellStack",
                "Number": 1,
                "Stacks": [
                    {
                        "FuelCellStackNo": 1,
                        "Voltage": 2000,
                        "Current": 300,
                        "H2InletPressure": 1200,
                        "AirInletPressure": 1100,
                        "AirInletTemp": 50,
                        "StackProbeNum": 3,
                        "StackProbeTemp": [100, 101, 102]
                    }
                ]
            }
        ],
        "Time": {
            "Day": 13,
            "Hour": 15,
            "Minute": 30,
            "Month": 11,
            "Second": 0,
            "Year": 25
        }
    }
}

Field	Type	Description
Type	String	FuelCellStack
Number	Integer	Number of fuel cell stacks
Stacks	Array	List of fuel cell stacks
FuelCellStackNo	Integer	Fuel cell stack sequence number
Voltage	Integer	Fuel cell stack voltage; unit: 0.1 V
Current	Integer	Fuel cell stack current; unit: 0.1 A
H2InletPressure	Integer	Hydrogen inlet pressure; unit: 0.1 bar
AirInletPressure	Integer	Air inlet pressure; unit: 0.1 bar
AirInletTemp	Integer	Air inlet temperature; offset 40°C; unit: 1°C
StackProbeNum	Integer	Number of stack temperature probes
StackProbeTemp	Array	Stack temperature probe readings

Supercapacitor Data

gbt32960-2025 only

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "Type": "SuperCapacitor",
                "ManagerSysNo": 1,
                "TotalVoltage": 1000,
                "TotalCurrent": 2000,
                "CellsTotal": 3,
                "CellsVoltage": [1200, 1201, 1202],
                "ProbeNum": 2,
                "ProbeTemp": [100, 101]
            }
        ],
        "Time": {
            "Day": 13,
            "Hour": 15,
            "Minute": 30,
            "Month": 11,
            "Second": 0,
            "Year": 25
        }
    }
}

Field	Type	Description
Type	String	SuperCapacitor
ManagerSysNo	Integer	Management system number
TotalVoltage	Integer	Total voltage; unit: 0.1 V
TotalCurrent	Integer	Total current; offset 1000 A; unit: 0.1 A
CellsTotal	Integer	Total number of cells
CellsVoltage	Array	Cell voltage list; unit: 1 mV
ProbeNum	Integer	Number of temperature probes
ProbeTemp	Array	Probe temperature list; offset 40°C; unit: 1°C

Supercapacitor Extreme Value Data

gbt32960-2025 only

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "Type": "SuperCapacitorExtreme",
                "MaxVoltageManagerSysNo": 1,
                "MaxVoltageCellCode": 10,
                "MaxVoltageCellValue": 7500,
                "MinVoltageManagerSysNo": 2,
                "MinVoltageCellCode": 11,
                "MinVoltageCellValue": 2000,
                "MaxTempManagerSysNo": 3,
                "MaxTempProbeCode": 12,
                "MaxTempValue": 120,
                "MinTempManagerSysNo": 4,
                "MinTempProbeCode": 13,
                "MinTempValue": 40
            }
        ],
        "Time": {
            "Day": 13,
            "Hour": 15,
            "Minute": 30,
            "Month": 11,
            "Second": 0,
            "Year": 25
        }
    }
}

Field	Type	Description
Type	String	SuperCapacitorExtreme
MaxVoltageManagerSysNo	Integer	Management system number with max voltage
MaxVoltageCellCode	Integer	Cell code with max voltage
MaxVoltageCellValue	Integer	Max voltage value; unit: 1 mV
MinVoltageManagerSysNo	Integer	Management system number with min voltage
MinVoltageCellCode	Integer	Cell code with min voltage
MinVoltageCellValue	Integer	Min voltage value; unit: 1 mV
MaxTempManagerSysNo	Integer	Management system number with max temperature
MaxTempProbeCode	Integer	Probe code with max temperature
MaxTempValue	Integer	Max temperature value
MinTempManagerSysNo	Integer	Management system number with min temperature
MinTempProbeCode	Integer	Probe code with min temperature
MinTempValue	Integer	Min temperature value

Digital Signature

gbt32960-2025 only

{
    "Cmd": 2,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Infos": [
            {
                "Type": "Signature",
                "SignatureType": 1,
                "RLength": 32,
                "RValue": "5256414C5256414C5256414C5256414C5256414C5256414C5256414C5256414C",
                "SLength": 32,
                "SValue": "5356414C5356414C5356414C5356414C5356414C5356414C5356414C5356414C"
            }
        ],
        "Time": {
            "Day": 13,
            "Hour": 15,
            "Minute": 30,
            "Month": 11,
            "Second": 0,
            "Year": 25
        }
    }
}

Field	Type	Description
Type	String	Signature
SignatureType	Integer	Signature type
RLength	Integer	Length of R value
RValue	String	R value (hex-encoded string)
SLength	Integer	Length of S value
SValue	String	S value (hex-encoded string)

Historical Data Retransmission

Topic: gbt32960/${vin}/upstream/reinfo

Data format: same as Real-Time Data Report.

Activation

gbt32960-2025 only

Topic: gbt32960/${vin}/upstream/activation

{
    "Cmd": 9,
    "Encrypt": 1,
    "Vin": "VIN12345678901234",
    "Data": {
        "Time": {
            "Day": 1,
            "Hour": 12,
            "Minute": 0,
            "Month": 1,
            "Second": 0,
            "Year": 25
        },
        "ChipID": "CHIP123456789012",
        "PubKeyLen": 15,
        "PubKey": "5055424C49434B4559313233343536",
        "VIN": "VIN12345678901234",
        "Signature": {
            "SignatureType": 1,
            "RLength": 32,
            "RValue": "5252525252525252525252525252525252525252525252525252525252525252",
            "SLength": 32,
            "SValue": "5353535353535353535353535353535353535353535353535353535353535353"
        }
    }
}

Field	Type	Description
Cmd	Integer	Command identifier; 9 = Activation
ChipID	String	16-byte chip identifier
PubKeyLen	Integer	Public key length
PubKey	String	Public key (hex-encoded)
VIN	String	Vehicle Identification Number
Signature	Object	Digital signature (same structure as Signature info type)

Downstream

Request flow: EMQX → emqx_gbt32960 → Terminal

Response flow: Terminal → emqx_gbt32960 → EMQX

Downstream topic: gbt32960/${vin}/dnstream

Upstream response topic: gbt32960/${vin}/upstream/response

Parameter Query

Request:

{
    "Action": "Query",
    "Total": 2,
    "Ids": ["0x01", "0x02"]
}

Field	Type	Description
Action	String	Command type; Query for this operation
Total	Integer	Total number of parameters to query
Ids	Array	List of parameter IDs; see protocol Table B.10 for ID meanings

Response:

{
    "Cmd": 128,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Total": 2,
        "Params": [
            {"0x01": 6000},
            {"0x02": 10}
        ],
        "Time": {
            "Day": 2,
            "Hour": 11,
            "Minute": 12,
            "Month": 2,
            "Second": 12,
            "Year": 17
        }
    }
}

Parameter Setting

Request:

{
    "Action": "Setting",
    "Total": 2,
    "Params": [{"0x01": 5000},
               {"0x02": 200}]
}

Field	Type	Description
Action	String	Command type; Setting for this operation
Total	Integer	Total number of parameters to set
Params	Array	List of parameter IDs and their values to set

Response:

{
    "Cmd": 129,
    "Encrypt": 1,
    "Vin": "1G1BL52P7TR115520",
    "Data": {
        "Total": 2,
        "Params": [
            {"0x01": 5000},
            {"0x02": 200}
        ],
        "Time": {
            "Day": 2,
            "Hour": 11,
            "Minute": 12,
            "Month": 2,
            "Second": 12,
            "Year": 17
        }
    }
}

Terminal Control

Different commands carry different parameters; commands with no parameters omit the Param field.

Remote Upgrade request:

{
    "Action": "Control",
    "Command": "0x01",
    "Param": {
        "DialingName": "hz203",
        "Username": "user001",
        "Password": "password01",
        "Ip": "192.168.199.1",
        "Port": 8080,
        "ManufacturerId": "BMWA",
        "HardwareVer": "1.0.0",
        "SoftwareVer": "1.0.0",
        "UpgradeUrl": "ftp://emqtt.io/ftp/server",
        "Timeout": 10
    }
}

Field	Type	Description
Action	String	Command type; Control for this operation
Command	String	Command ID (see protocol Table B.15)
Param	Object	Command parameters (varies by command; omitted when empty)

Vehicle terminal shutdown (0x02, no parameters):

{
    "Action": "Control",
    "Command": "0x02"
}

Vehicle terminal alarm (0x06):

{
    "Action": "Control",
    "Command": "0x06",
    "Param": {"Level": 0, "Message": "alarm message"}
}