Queclink Track Protocol

The device type refers to the terminal model. In general, the device type will not change due to hardware or firmware upgrades.

A self-increasing count number in each report, it begins from 0000H and increases by 1 for each report, and it rolls back after FFFFH. The count number is accumulated according to the order in which the reports are sent, not in the order in which the reports are generated. After the terminal is restarted, the count number will not restart from 0000H, but will continue to accumulate based on the count before restarting.

Used to indicate the profile the terminal was in when the record or report was generated.

The name of the terminal device.

Used to record the time when the event occurred.

The number of reports stored in the terminal that were not sent to the backend server. Expressed as a 16-bit unsigned integer.

Motion Status The current motion status of the terminal.

• 00H-The terminal is motionless now.
• 01H-The terminal is being moved now.
• 02H-Unknown. The terminal is detecting motion now.

The vehicle's current tow status.

• 00H-The vehicle is not being towed now.
• 01H-Fake Tow. The vehicle is ignition off and it is likely to be being towed now.
  
• 02H-Tow. The vehicle is being towed now.
  

The vehicle's current ignition status.

• 00H-The vehicle is ignition off now.
• 01H-The vehicle is ignition on now.
• 02H-Unknown. The terminal is checking whether the vehicle is on or off.

The accumulated mileage of vehicle since latest ignition on. Expressed as a 32-bit unsigned integer and the unit is meter.

Absolute throttle position (not "relative" or "learned" throttle position). It indicates a percentage value of the throttle position sensor. In particular, FFH means that the terminal cannot obtain this data currently.

Revolutions per minute (RPM) of the engine. Expressed as a 16-bit unsigned integer and the unit is rpm. In particular, FFFFH means that the terminal cannot obtain this data currently.

Calculated load value. Percent of maximum available engine torque. In particular, FFH means that the terminal cannot obtain this data currently.

Malfunction Indicator Lamp (MIL) Status.

• 00H-MIL OFF.
• 01H-MIL ON.
• 02H-Unknown.
  

• 0-Off. GNSS is not working at the moment. In this case, the 'longitude', 'latitude', 'speed'(if any), 'UTC time'(if any) etc. are the same as the last valid positioning.
• 1-No fix. GNSS worked but could not get the position. In this case, the 'longitude', 'latitude', 'speed'(if any), 'UTC time'(if any) etc. are the same as the last valid positioning.
• 2-Fix. GNSS worked and got the accurate location. The values of all fields are reliable to use.

• 00-2D GNSS fix.
• 1-3D GNSS fix.

Horizontal Dilution of Precision.

• 0-Registered to the home network.
• 1-Registered to a roaming network.

• 0-GSM
• 1-UMTS
• 8-LTE Cat-4

• 0-800MHz
• 1-850MHz
• 2-900MHz
• 3-1800MHz
• 4-1900MHz
• 5-2100MHz

• 0 - -113 or less
• 1 - - 111
• from 2 to 30 - from -109 to -53
• 31 - -51 or grater
• 99 - Not known or not detectable

Whether the external power supply is connected.

• 00H-Not connected.
• 01H-Connected.

The external power supply voltage of the terminal device. This field is only valid when Connection Status is 01H (Connected).

Integrated Circuit Card Identity. In particular, ALL 00H means that the terminal cannot obtain these data currently.

The ID of Geo-fence.

GEO Status The current status of Geo-fence.

• 0-The terminal is inside of Geo-fence now.
• 1-The terminal is outside of Geo-fence now.

The accumulated mileage from the beginning of the vehicle to be towed to the present or stopped.

The vehicle's current idling status.

• 00H-The vehicle is not idling.
• 01H-The vehicle is idling.
• 02H-Unknown.

Indicates the working mode of Parking-fence function.

• 0-Disable.
• 1-Enable (Automatically triggered always).
• 2-Enable (Automatically triggered once).

Indicates the current status of the Parking-fence.

• 0-No Parking-fence is generated.
• 1-The Parking-fence is generated (the vehicle is inside).
• 2-The Parking-fence is canceled (the vehicle is outside).

ndicates the latitude of the center of the circular Parking-fence region.

Connectivity Used to indicate the connectivity of the corresponding component. Different bits correspond to different components. A bit value of 1 means that the connectivity of the corresponding component is abnormal, otherwise it means that the connectivity of the corresponding component is normal. The components corresponding to the bits are as follows:

• Bit0-MCU
• Bit1-Modem
• Bit2-Reading IMEI
• Bit3-SIM/eSIM
• Bit4-GNSS
• Bit5-G-Sensor
• Bit6-External Flash
• Bit11-Reading external power voltage
• Bit13-OBD
• Other bits-Reserved, set to 0 by default

Indicates which type of harsh behavior event occurred.

• 0-Normal.
• 1-Harsh acceleration.
• 2-Harsh deceleration.
• 3-Harsh cornering.
• 255-Unknown.

The lowest bit is used to indicate the connection status, while the other bits are reserved and default to 0.
– Connection Status (Bit0)
Indicates whether the internal battery is connected.
∗ 0b0 - Not connected.
∗ 0b1 - Connected.

The internal battery voltage of the terminal device. Unit is V.

The current volume of the internal battery in percentage.

Whether the internal battery is being charged. For non-rechargeable battery, the value of this field is 02H.
– 00H - Not charging.
– 01H - Charging.
– 02H - Not support.
– 11H - Charging (Solar).

Temperature in C

Time of the moment when temperature updated

The current status of the tamper alarm detection.
– 00H - Normal.
– 01H - Tamper alarm.
– FFH - Unknown.

The previous status of the tamper alarm detection.
– 00H - Normal.
– 01H - Tamper alarm.
– FFH - Unknown.

Indecates how long previous status remains