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| packet type || 5 || 75–79 || Integer type:   
| packet type || 5 || 75–79 || Integer type:   
* 00 - Device Info Packet   
* 00 - Device Info Packet   
* 01 - Alert Packet
* 01 - Telemetry Packet
* 02 - OTA Packet   
* 02 - OTA Packet   
* 03 - Error Packet   
* 03 - Error Packet   
* 04 - Device Configuration Packet   
* 04 - Device Configuration Packet   
* 05 - IP Configuration Packet   
* 05 - IP Configuration Packet   
* 06 - Live ||
| 01 - Telemetry Packet
|-
|-
! colspan="5" style="background:#D3D3D3;" | Data (= 55 bytes × number of packets)
! colspan="5" style="background:#D3D3D3;" | Data (= 55 bytes × number of packets)
|-
|-
| Packet Status || 1 || — || Type of packet ||  
| Packet Status || 1 || 80 || Type of packet || 0:History, 1:Live
|-
|-
| Frame Number || 16 || — || Frame number ||  
| Frame Number || 16 || 81-96 || Frame number ||  
|-
|-
| AlertID || 8 || — || Alert identifier ||  
| AlertID || 5 || 97–101 || Alert identifier ||  
|-
|-
| Operator || 4 || — || Network operator || 00-Airtel, 01-BSNL, 02-VI, 04-JIO
| Operator || 4 || 102–105 || Network operator || 00-Unknown, 01-BSNL, 02-VI, 03-AIRTEL, 04-JIO
|-
|-
| Signal Strength || 5 || — || Signal strength || Integer (0–31)
| Signal Strength || 5 || 106–110|| Signal strength || Integer (0–31)
|-
|-
| MCC || 10 || — || Mobile country code || Integer
| MCC || 10 || 111–120 || Mobile country code || Integer
|-
|-
| MNC || 6 || — || Mobile network code || Integer
| MNC || 10 || 121–130 || Mobile network code || Integer
|-
|-
| Cell Id || 16 || — || Cell tower ID || Integer
| Cell Id || 16 || 131–146 || Cell tower ID || Integer
|-
|-
| Location Area Code || 16 || — || Location area code || Integer
| Location Area Code || 16 ||147–162|| Location area code || Integer
|-
|-
| Fix_status || 1 || — || GPS fix status || 0: No fix, 1: Valid Fix
| Fix_status || 1 || 163 || GPS fix status || 0: No fix, 1: Valid Fix
|-
|-
| Start byte || 1 || — || Latitude coordinate || Divide by 1,000,000 for float value
| Latitude || 29 || 164–192 || Latitude coordinate || Divide by 1,000,000 for float value
|-
|-
| NS_Indication || 1 || — || N or S || 0: N, 1: S
| NS_Indication || 1 || 193 || N or S || 0: N, 1: S
|-
|-
| Longitude || 29 || — || Longitude coordinate || Divide by 1,000,000 for float value
| Longitude || 29 || 194–222 || Longitude coordinate || Divide by 1,000,000 for float value
|-
|-
| EW_Indication || 1 || — || East/West Indication || 0: E, 1: W
| EW_Indication || 1 || 223 || East/West Indication || 0: E, 1: W
|-
|-
| HDOP || 10 || — || Horizontal dilution || Divide by 10 for float value
| HDOP || 10 || 224–233 || Horizontal dilution || Divide by 100 for float value
|-
|-
| PDOP || 10 || — || Position dilution || Divide by 10 for float value
| PDOP || 10 || 234–243 || Position dilution || Divide by 100 for float value
|-
|-
| Speed || 10 || — || Speed in km/h || Divide by 10 for float value
| Speed || 15 || 244–258 || Speed in km/h || Divide by 100 for float value
|-
|-
| Altitude || 15 || — || Altitude in meters || Divide by 10 for float value
| Altitude || 15 || 259–273 || Altitude in meters || Divide by 100 for float value
|-
|-
| Power Status || 1 || — || Power connection status || 0: Power disconnected, 1: Power connected
| Power Status || 1 || 274 || Power connection status || 0: Power disconnected, 1: Power connected
|-
|-
| Ignition Status || 1 || — || Ignition status || 0: OFF, 1: ON
| Ignition Status || 1 || 275 || Ignition status || 0: OFF, 1: ON
|-
|-
| Immobilizer Status || 1 || — || Immobilizer status || 0: OFF, 1: ON
| Immobilizer Status || 1 || 276 || Immobilizer status || 0: OFF, 1: ON
|-
|-
| Tamper || 1 || — || Wire Tamper detection || 0: Tamper clear, 1: Tamper alert ON
| Tamper detection || 1 || 277 || Wire Tamper detection || 0: Tamper alert OFF, 1: Tamper alert ON
|-
|-
| Supply Voltage || 6 || — || External battery voltage || Divide by 10 for float value
| Supply Voltage || 10 || 278–287 || Supply voltage || Divide by 10 for float value
|-
|-
| Internal Battery Voltage || 6 || — || Internal battery voltage || Divide by 10 for float value
| Internal Battery Voltage || 6 || 288–293 || Internal battery voltage || Divide by 10 for float value
|-
|-
| Fuel SensorValue 1 || 16 || — || Fuel sensor value || Divide by 10 if float
|FuelSensorstatus 1 || 1 || 294 || Status of fuel sensor 1 || 1 if connected, 0 if not connected
|-
|-
| Fuel Percentage 1 || 16 || — || Fuel level percentage || Divide by 10 for float value
| Fuel Percentage 1 || 10 ||295–304 || Fuel level percentage || Divide by 10 for float value
|-
|-
| Fuel SensorValue 2 || 16 || — || Fuel sensor value || Divide by 10 if float
| Fuel SensorValue 1 || 16 || 305–320 || Fuel sensor value || Divide by 10 if float
|-
|-
| Fuel Percentage 2 || 16 || — || Fuel level percentage || Divide by 10 for float value
|FuelSensorstatus 2 || 1 || 321|| Status of fuel sensor 2  || 1 if connected, 0 if not connected
|-
|-
| Fuel SensorValue 3 || 16 || — || Fuel sensor value || Divide by 10 if float
| Fuel Percentage 2 || 10 ||322–331 || Fuel level percentage || Divide by 10 for float value
|-
|-
| Fuel Percentage 3 || 16 || — || Fuel level percentage || Divide by 10 for float value
| Fuel SensorValue 2 || 16 || 332–347 || Fuel sensor value || Divide by 10 if float
|-
|-
| Analog Input || 10 || — || Analog input || Divide by 10 for float value
|FuelSensorstatus 3 || 1 || 348|| Status of fuel sensor 3 || 1 if connected, 0 if not connected
|-
|-
| Analog Input 1 || 10 || — || Analog input 1 || Divide by 10 for float value
| Fuel Percentage 3 || 16 || 349–358 || Fuel sensor value || Divide by 10 if float
|-
|-
| Digital Input 1 || 1 || — || Digital input 1 || 0 or 1
| Fuel SensorValue 3 || 16 || 359–374 || Fuel level percentage || Divide by 10 for float value
|-
|-
| Digital Input 2 || 1 || — || Digital input 2 || 0 or 1
| Analog Input 1 || 10 || 375–384 || Analog input || Divide by 10 for float value
|-
|-
| Digital Output 1 || 1 || — || Digital output 1 || 0 or 1
| Analog Input 2 || 10 || 385–394 || Analog input 1 || Divide by 10 for float value
|-
|-
| Digital Output 2 || 1 || — || Digital output 2 || 0 or 1
| Digital Input 1 || 1 || 395 || Digital input 1 || 0 or 1
|-
|-
| Temperature sensor status 1 || 1 || — || Status of temperature sensor 1 || 1 if connected, 0 if not connected
| Digital Input 2 || 1 || 396 || Digital input 2 || 0 or 1
|-
|-
| Temperature 1 || 12 || — || Temperature in °C || Signed, divide by 10
| Digital Output 1 || 1 || 397 || Digital output 1 || 0 or 1
|-
|-
| Temperature sensor status 2 || 1 || — || Status of temperature sensor 2 || 1 if connected, 0 if not connected
| Digital Output 2 || 1 || 398 || Digital output 2 || 0 or 1
|-
|-
| Temperature 2 || 12 || — || Temperature in °C || Signed, divide by 10
| Temperature sensor status 1 || 1 || 399 || Status of temperature sensor 1 || 1 if connected, 0 if not connected
|-
|-
| Temperature sensor status 3 || 1 || — || Status of temperature sensor 3 || 1 if connected, 0 if not connected
| Temperature 1 || 12 || 400–411 || Temperature in °C || Signed, divide by 10 for decimal value
|-
|-
| Temperature 3 || 12 || — || Temperature in °C || Signed, divide by 10
| Temperature sensor status 2 || 1 || 412 || Status of temperature sensor 2 || 1 if connected, 0 if not connected
|-
|-
| Humidity || 8 || — || Humidity percentage ||  
| Temperature 2 || 12 || 413–424 || Temperature in °C || Signed, divide by 10 for decimal value
|-
|-
| Odometer || 35 || — || Odometer value in meters ||  
| Temperature sensor status 3 || 1 || 425 || Status of temperature sensor 3 || 1 if connected, 0 if not connected
|-
|-
| DateTime UTC || 32 || — || Timestamp || UTC time in seconds
| Temperature 3 || 12 || 426–437 || Temperature in °C || Signed, divide by 10 for decimal value
|-
|-
| TimeZone || 8 || — ||  
| Humidity || 7 || 438–444 || Humidity percentage || Integer value
Timezone in quarter-hours (e.g., 22 = +5:30).
|-
Each unit = 15 mins.   
| Odometer || 35 || 445–479 || Odometer value in meters ||
Value 22 = 22 × 15 mins = 330 mins = +5:30   
|-
Range: -48 to 56, 2's complement ||  
| DateTime UTC || 32 ||480–511|| UTC Timestamp || UTC time in seconds
|-
| TimeZone || 8 || 512–519 || Timezone in quarter-hours (e.g., 22 = +5:30). Each unit = 15 mins.  Value 22 = 22 × 15 mins = 330 mins = +5:30  Range: -48 to 56, 2's complement ||Timezone in quarter-hours
|-
|-
! colspan="5" "style="background:#D3D3D3;" | Tail
! colspan="5" "style="background:#D3D3D3;" | Tail
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==Sample Packet==
==Sample Packet==
<pre>
<pre>
HEX "240370e2400e60e3ad81801b0cfaca0be02541c2000000000000000000000000000000009800000000000000000000000000000000000000000000006875e9e5162a05"
HEX "240370e21aeb7abfd5818011047aca0260081b780000000000000000000000000000307890000000000000000000000000000000000000000000000068a7f192162abf"
 
JSON
{
{"imei": 862942074896044, "packet_type": 1, "no_packets": 1, "packet_status": 1, "frame_number": 34, "alert_id": 1, "operator": 1, "signal_strength": 29, "mcc": 404, "mnc": 19, "cell_id": 64, "lac": 56256, "fix_status": 0, "latitude": 0.0, "latitude_dir": 0, "longitude": 0.0, "longitude_dir": 0, "hdop": 0.0, "pdop": 0.0, "speed": 0.0, "altitude": 0.0, "power": 1, "ignition": 1, "immobilizer": 0, "tamper": 0, "supply_volatge": 12.0, "internal_battery_volatge": 3.6, "fuel_sensor_status_1": 0, "fuel_percentage_1": 0.0, "fuel_value_sensor_1": 0, "fuel_sensor_status_2": 0, "fuel_percentage_2": 0.0, "fuel_value_sensor_2": 0, "fuel_sensor_status_3": 0, "fuel_percentage_3": 0.0, "fuel_value_sensor_3": 0, "analog_input1": 0.0, "analog_input2": 0.0, "digital_input1": 0, "digital_input2": 0, "digital_output1": 0, "digital_output2": 0, "temp_sensor_status_1": 0, "temperature_1": 0.0, "temp_sensor_status_2": 0, "temperature_2": 0.0, "temp_sensor_status_3": 0, "temperature_3": 0.0, "humidity": 0, "odometer": 0, "dateTime": 1755836818, "timezone": 22, "dateTime_tz": "2025-08-22 09:56:58", "error_code": 0
"imei": 864218069278060,  
"packet_type": 1,
"no_packets": 1,
"packet_status": 1,  
"frame_number": 54,  
"alert_id": 3,  
"operator": 3,  
"signal_strength": 29,  
"mcc": 404, "mnc": 95,  
"cell_id": 298,  
"lac": 3600,  
"fix_status": 0,  
"latitude": 0.0,  
"latitude_dir": 0,  
"longitude": 0.0,  
"longitude_dir": 0,  
"hdop": 0.0,  
"pdop": 0.0,  
"speed": 0.0,  
"altitude": 0.0,
"power": 0,  
"ignition": 0,  
"immobilizer": 0,  
"tamper": 0,  
"supply_volatge": 0.0,  
"internal_battery_volatge": 3.8,  
"fuel_sensor_status_1": 0,  
"fuel_percentage_1": 0.0,  
"fuel_value_sensor_1": 0,  
"fuel_sensor_status_2": 0,  
"fuel_percentage_2": 0.0,  
"fuel_value_sensor_2": 0,  
"fuel_sensor_status_3": 0,  
"fuel_percentage_3": 0.0,  
"fuel_value_sensor_3": 0,  
"analog_input1": 0.0,  
"analog_input2": 0.0,  
"digital_input1": 0,  
"digital_input2": 0,  
"digital_output1": 0,  
"digital_output2": 0,  
"temp_sensor_status_1": 0,  
"temperature_1": 0.0,  
"temp_sensor_status_2": 0,  
"temperature_2": 0.0,  
"temp_sensor_status_3": 0,  
"temperature_3": 0.0,  
"humidity": 0,  
"odometer": 0,  
"dateTime": 1752558053,  
"timezone": 22,  
"dateTime_tz": "2025-07-15 11:10:53",  
"error_code": 0  
}
}
</pre>
</pre>
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   <title>Telemetry Packet Parser</title>
   <title>Telemetry Packet Parser</title>
   <style>
   <style>
     body { font-family: Arial, sans-serif; padding: 20px; }
     body { font-family: Arial, sans-serif; }
     textarea { width: 100%; height: 100px; font-family: monospace; }
     textarea { width: 100%; height: 100px; font-family: monospace; }
     button {
     button {
       padding: 10px ;
       padding: 10px 20px;
       border-radius: 20px;
       border-radius: 50px;
       font-weight: bold;
       font-weight: bold;
       background-color: #680022;
       background-color: #680022;
Line 211: Line 160:
       background-color: #4c0019;
       background-color: #4c0019;
     }
     }
     table { width: 100%; border-collapse: collapse; }
     table { width: 100%; border-collapse: collapse; margin-top: 20px; }
     th, td { text-align: left; }
     th, td { border: 1px solid #ccc; padding: 8px; text-align: left; }
     th { background-color: #680022; color: white; }
     th { background-color: #680022; color: white; }
   </style>
   </style>
Line 219: Line 168:


<h2>Telemetry Packet Parser</h2>
<h2>Telemetry Packet Parser</h2>
<textarea id="hexInput" placeholder="Paste HEX packet here..."></textarea><br>
<textarea id="hexInput" placeholder="Paste packet here..."></textarea><br>
<button onclick="parseTelemetry()">Parse Packet</button>
<button onclick="parseTelemetry()">Parse Packet</button>


Line 227: Line 176:
   <tbody></tbody>
   <tbody></tbody>
</table>
</table>
<script>
<script>
function hexToBits(hex) {
function hexToBits(hex) {
Line 254: Line 202:


   if (!hex || !hex.startsWith("24")) {
   if (!hex || !hex.startsWith("24")) {
     alert("Invalid packet! Must start with '24'");
     alert("Invalid packet");
     return;
     return;
   }
   }
Line 346: Line 294:
}
}
</script>
</script>
</body>
</body>
</html>
</html>

Latest revision as of 05:06, 4 February 2026

Field Size (bits) Bit Range Description Breakdown
Header (10 bytes)
Start byte 8 0–7 Starting character $ (ASCII value 36) $
Data length 12 08–19 2-byte length of the data following the header
Num of data packets 5 20–24 Number of packets (0–32) 0–32
IMEI 50 25–74 Unique device identifier e.g., 887744556677882
packet type 5 75–79 Integer type:
  • 00 - Device Info Packet
  • 01 - Telemetry Packet
  • 02 - OTA Packet
  • 03 - Error Packet
  • 04 - Device Configuration Packet
  • 05 - IP Configuration Packet
 01 - Telemetry Packet
Data (= 55 bytes × number of packets)
Packet Status 1 80 Type of packet 0:History, 1:Live
Frame Number 16 81-96 Frame number
AlertID 5 97–101 Alert identifier
Operator 4 102–105 Network operator 00-Unknown, 01-BSNL, 02-VI, 03-AIRTEL, 04-JIO
Signal Strength 5 106–110 Signal strength Integer (0–31)
MCC 10 111–120 Mobile country code Integer
MNC 10 121–130 Mobile network code Integer
Cell Id 16 131–146 Cell tower ID Integer
Location Area Code 16 147–162 Location area code Integer
Fix_status 1 163 GPS fix status 0: No fix, 1: Valid Fix
Latitude 29 164–192 Latitude coordinate Divide by 1,000,000 for float value
NS_Indication 1 193 N or S 0: N, 1: S
Longitude 29 194–222 Longitude coordinate Divide by 1,000,000 for float value
EW_Indication 1 223 East/West Indication 0: E, 1: W
HDOP 10 224–233 Horizontal dilution Divide by 100 for float value
PDOP 10 234–243 Position dilution Divide by 100 for float value
Speed 15 244–258 Speed in km/h Divide by 100 for float value
Altitude 15 259–273 Altitude in meters Divide by 100 for float value
Power Status 1 274 Power connection status 0: Power disconnected, 1: Power connected
Ignition Status 1 275 Ignition status 0: OFF, 1: ON
Immobilizer Status 1 276 Immobilizer status 0: OFF, 1: ON
Tamper detection 1 277 Wire Tamper detection 0: Tamper alert OFF, 1: Tamper alert ON
Supply Voltage 10 278–287 Supply voltage Divide by 10 for float value
Internal Battery Voltage 6 288–293 Internal battery voltage Divide by 10 for float value
FuelSensorstatus 1 1 294 Status of fuel sensor 1 1 if connected, 0 if not connected
Fuel Percentage 1 10 295–304 Fuel level percentage Divide by 10 for float value
Fuel SensorValue 1 16 305–320 Fuel sensor value Divide by 10 if float
FuelSensorstatus 2 1 321 Status of fuel sensor 2 1 if connected, 0 if not connected
Fuel Percentage 2 10 322–331 Fuel level percentage Divide by 10 for float value
Fuel SensorValue 2 16 332–347 Fuel sensor value Divide by 10 if float
FuelSensorstatus 3 1 348 Status of fuel sensor 3 1 if connected, 0 if not connected
Fuel Percentage 3 16 349–358 Fuel sensor value Divide by 10 if float
Fuel SensorValue 3 16 359–374 Fuel level percentage Divide by 10 for float value
Analog Input 1 10 375–384 Analog input Divide by 10 for float value
Analog Input 2 10 385–394 Analog input 1 Divide by 10 for float value
Digital Input 1 1 395 Digital input 1 0 or 1
Digital Input 2 1 396 Digital input 2 0 or 1
Digital Output 1 1 397 Digital output 1 0 or 1
Digital Output 2 1 398 Digital output 2 0 or 1
Temperature sensor status 1 1 399 Status of temperature sensor 1 1 if connected, 0 if not connected
Temperature 1 12 400–411 Temperature in °C Signed, divide by 10 for decimal value
Temperature sensor status 2 1 412 Status of temperature sensor 2 1 if connected, 0 if not connected
Temperature 2 12 413–424 Temperature in °C Signed, divide by 10 for decimal value
Temperature sensor status 3 1 425 Status of temperature sensor 3 1 if connected, 0 if not connected
Temperature 3 12 426–437 Temperature in °C Signed, divide by 10 for decimal value
Humidity 7 438–444 Humidity percentage Integer value
Odometer 35 445–479 Odometer value in meters
DateTime UTC 32 480–511 UTC Timestamp UTC time in seconds
TimeZone 8 512–519 Timezone in quarter-hours (e.g., 22 = +5:30). Each unit = 15 mins. Value 22 = 22 × 15 mins = 330 mins = +5:30 Range: -48 to 56, 2's complement Timezone in quarter-hours
Tail
End Character 8 0–7 Starting character * (ASCII value 42) *
CRC 8 8–15 8-bit XOR CRC of data starting from $ to * (excluding $ and *)

Sample Packet

HEX "240370e21aeb7abfd5818011047aca0260081b780000000000000000000000000000307890000000000000000000000000000000000000000000000068a7f192162abf"
JSON
{"imei": 862942074896044, "packet_type": 1, "no_packets": 1, "packet_status": 1, "frame_number": 34, "alert_id": 1, "operator": 1, "signal_strength": 29, "mcc": 404, "mnc": 19, "cell_id": 64, "lac": 56256, "fix_status": 0, "latitude": 0.0, "latitude_dir": 0, "longitude": 0.0, "longitude_dir": 0, "hdop": 0.0, "pdop": 0.0, "speed": 0.0, "altitude": 0.0, "power": 1, "ignition": 1, "immobilizer": 0, "tamper": 0, "supply_volatge": 12.0, "internal_battery_volatge": 3.6, "fuel_sensor_status_1": 0, "fuel_percentage_1": 0.0, "fuel_value_sensor_1": 0, "fuel_sensor_status_2": 0, "fuel_percentage_2": 0.0, "fuel_value_sensor_2": 0, "fuel_sensor_status_3": 0, "fuel_percentage_3": 0.0, "fuel_value_sensor_3": 0, "analog_input1": 0.0, "analog_input2": 0.0, "digital_input1": 0, "digital_input2": 0, "digital_output1": 0, "digital_output2": 0, "temp_sensor_status_1": 0, "temperature_1": 0.0, "temp_sensor_status_2": 0, "temperature_2": 0.0, "temp_sensor_status_3": 0, "temperature_3": 0.0, "humidity": 0, "odometer": 0, "dateTime": 1755836818, "timezone": 22, "dateTime_tz": "2025-08-22 09:56:58", "error_code": 0
}


Telemetry Packet Parser

Telemetry Packet Parser


Parsed Output:

FieldValue

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