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Line 23: Line 23:
* 04 - Device Configuration Packet   
* 04 - Device Configuration Packet   
* 05 - IP Configuration Packet   
* 05 - IP Configuration Packet   
| 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)
Line 32: Line 33:
| AlertID || 5 || 97–101 || Alert identifier ||  
| AlertID || 5 || 97–101 || Alert identifier ||  
|-
|-
| Operator || 4 || 102–105 || 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 || 106–110|| Signal strength || Integer (0–31)
| Signal Strength || 5 || 106–110|| Signal strength || Integer (0–31)
Line 54: Line 55:
| EW_Indication || 1 || 223 || East/West Indication || 0: E, 1: W
| EW_Indication || 1 || 223 || East/West Indication || 0: E, 1: W
|-
|-
| HDOP || 10 || 224–233 || Horizontal dilution || Divide by 10 for float value
| HDOP || 10 || 224–233 || Horizontal dilution || Divide by 100 for float value
|-
|-
| PDOP || 10 || 234–243 || Position dilution || Divide by 10 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 10 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 10 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
| Power Status || 1 || 274 || Power connection status || 0: Power disconnected, 1: Power connected
Line 68: Line 69:
| Immobilizer Status || 1 || 276 || Immobilizer status || 0: OFF, 1: ON
| Immobilizer Status || 1 || 276 || Immobilizer status || 0: OFF, 1: ON
|-
|-
| Tamper || 1 || 277 || Wire Tamper detection || 0: Tamper alert OFF, 1: Tamper alert ON
| Tamper detection || 1 || 277 || Wire Tamper detection || 0: Tamper alert OFF, 1: Tamper alert ON
|-
|-
| Supply Voltage || 10 || 278–287 || 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 || 288–293 || Internal battery voltage || Divide by 10 for float value
| Internal Battery Voltage || 6 || 288–293 || Internal battery voltage || Divide by 10 for float value
Line 106: Line 107:
| Temperature sensor status 1 || 1 || 399 || Status of temperature sensor 1 || 1 if connected, 0 if not connected
| 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
| 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 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
| 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 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
| Temperature 3 || 12 || 426–437 || Temperature in °C || Signed, divide by 10 for decimal value
|-
|-
| Humidity || 7 || 438–444 || Humidity percentage ||  
| Humidity || 7 || 438–444 || Humidity percentage || Integer value
|-
|-
| Odometer || 35 || 445–479 || Odometer value in meters ||  
| Odometer || 35 || 445–479 || Odometer value in meters ||  
|-
|-
| DateTime UTC || 32 ||480–511|| Timestamp || UTC time in seconds
| DateTime UTC || 32 ||480–511|| UTC Timestamp || UTC time in seconds
|-
|-
| TimeZone || 8 || 512–519 ||  
| 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
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 ||  
|-
|-
! colspan="5" "style="background:#D3D3D3;" | Tail
! colspan="5" "style="background:#D3D3D3;" | Tail
Line 138: Line 135:
<pre>
<pre>
HEX "240370e21aeb7abfd5818011047aca0260081b780000000000000000000000000000307890000000000000000000000000000000000000000000000068a7f192162abf"
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": 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
}
}
Line 146: Line 143:
<html lang="en">
<html lang="en">
<head>
<head>
   <meta charset="UTF-8" />
   <meta charset="UTF-8">
   <title>Telemetry Packet Parser – Grouped Frames</title>
   <title>Telemetry Packet Parser</title>
   <style>
   <style>
     body { font-family: Arial, sans-serif; margin: 24px; }
     body { font-family: Arial, sans-serif; }
     textarea { width: 100%; height: 140px; font-family: monospace; }
     textarea { width: 100%; height: 100px; font-family: monospace; }
     button {
     button {
       padding: 10px 20px; border-radius: 50px; font-weight: bold;
       padding: 10px 20px;
       background-color: #680022; color: white; border: none; cursor: pointer;
      border-radius: 50px;
      font-weight: bold;
       background-color: #680022;
      color: white;
      border: none;
      cursor: pointer;
    }
    button:hover {
      background-color: #4c0019;
     }
     }
    button:hover { background-color: #4c0019; }
     table { width: 100%; border-collapse: collapse; margin-top: 20px; }
     table { width: 100%; border-collapse: collapse; margin-top: 12px; table-layout: fixed; word-wrap: break-word; }
     th, td { border: 1px solid #ccc; padding: 8px; text-align: left; }
     th, td { border: 1px solid #ccc; padding: 6px; text-align: left; font-size: 13px; }
     th { background-color: #680022; color: white; }
     th { background-color: #680022; color: white; }
    .error { color: #b00020; margin-top: 8px; font-weight: bold; }
    .section { margin-top: 30px; }
    .json-output { background: #f4f4f4; padding: 12px; font-family: monospace; font-size: 13px; overflow-x: auto; }
    .pkt-title { margin: 18px 0 6px; font-size: 16px; font-weight: bold; color: #333; }
   </style>
   </style>
</head>
</head>
<body>
<body>
  <h2>Telemetry Packet Parser</h2>
  <textarea id="hexInput" placeholder="Paste Telemtry Hex Packet Here..."></textarea><br/>
  <button id="parseBtn">Parse Packet</button>
  <div id="errors" class="error"></div>
  <div class="section">
    <h3>Header </h3>
    <table id="headerTable">
      <thead><tr><th>Field</th><th>Value</th></tr></thead>
      <tbody></tbody>
    </table>
  </div>
  <div class="section">
    <h3>Data Packets</h3>
    <div id="dataTables"></div>
  </div>


  <div class="section">
<h2>Telemetry Packet Parser</h2>
    <h3>JSON Output</h3>
<textarea id="hexInput" placeholder="Paste packet here..."></textarea><br>
    <pre class="json-output" id="jsonOut"></pre>
<button onclick="parseTelemetry()">Parse Packet</button>
  </div>


<h3>Parsed Output:</h3>
<table id="resultTable">
  <thead><tr><th>Field</th><th>Value</th></tr></thead>
  <tbody></tbody>
</table>
<script>
<script>
function cleanHex(str) {
function hexToBits(hex) {
   return (str || "").toString().trim().replace(/[^0-9a-fA-F]/g, "").toLowerCase();
   return hex.match(/.{1,2}/g).map(byte =>
    parseInt(byte, 16).toString(2).padStart(8, '0')).join('');
}
}
function hexToBits(hex) {
 
   return hex.match(/.{1,2}/g).map(b => parseInt(b, 16).toString(2).padStart(8, "0")).join("");
function bitsToInt(bits) {
   return parseInt(bits, 2);
}
}
function bitsToInt(bits) { return bits ? parseInt(bits, 2) : 0; }
 
function bitsToSignedInt(bits) {
function bitsToSignedInt(bits) {
   if (!bits) return 0;
   let value = parseInt(bits, 2);
  const v = parseInt(bits, 2);
   const max = Math.pow(2, bits.length);
   const max = 1 << bits.length;
   return value >= max / 2 ? value - max : value;
   return v >= max / 2 ? v - max : v;
}
function addRow(tbody, k, v) {
  const tr = document.createElement("tr");
  tr.innerHTML = `<td>${k}</td><td>${v}</td>`;
  tbody.appendChild(tr);
}
}


/* --- Field Map (bit indices) --- */
function bigIntFromBits(bits) {
const FULL_FIELDS = [
   return BigInt('0b' + bits).toString();
  ["Start Byte", 0, 8], ["Data Length", 8, 20], ["No. of Packets", 20, 25],
  ["IMEI", 25, 75], ["Packet Type", 75, 80], ["Packet Status", 80, 81],
  ["Frame Number", 81, 97], ["Alert ID", 97, 102], ["Operator", 102, 106],
  ["Signal Strength", 106, 111], ["MCC", 111, 121], ["MNC", 121, 131],
  ["Cell ID", 131, 147], ["LAC", 147, 163], ["Fix Status", 163, 164],
  ["Latitude", 164, 193], ["NS Indication", 193, 194], ["Longitude", 194, 223],
  ["EW Indication", 223, 224], ["HDOP", 224, 234], ["PDOP", 234, 244],
  ["Speed", 244, 259], ["Altitude", 259, 274], ["Power Status", 274, 275],
  ["Ignition Status", 275, 276], ["Immobilizer Status", 276, 277],
  ["Tamper", 277, 278], ["Supply Voltage", 278, 288], ["Internal Battery Voltage", 288, 294],
  ["Fuel Sensor Status 1", 294, 295], ["Fuel Percentage 1", 295, 305],
  ["Fuel Sensor Value 1", 305, 321], ["Fuel Sensor Status 2", 321, 322],
  ["Fuel Percentage 2", 322, 332], ["Fuel Sensor Value 2", 332, 348],
  ["Fuel Sensor Status 3", 348, 349], ["Fuel Percentage 3", 349, 359],
  ["Fuel Sensor Value 3", 359, 375], ["Analog Input 1", 375, 385],
  ["Analog Input 2", 385, 395], ["Digital Input 1", 395, 396],
  ["Digital Input 2", 396, 397], ["Digital Output 1", 397, 398],
  ["Digital Output 2", 398, 399], ["Temperature Sensor Status 1", 399, 400],
  ["Temperature 1", 400, 412], ["Temperature Sensor Status 2", 412, 413],
  ["Temperature 2", 413, 425], ["Temperature Sensor Status 3", 425, 426],
  ["Temperature 3", 426, 438], ["Humidity", 438, 445], ["Odometer", 445, 480],
  ["DateTime UTC", 480, 512], ["TimeZone", 512, 520]
];
 
/* Sub-packet fields (strip first 80 header bits) */
const SUB_FIELDS = FULL_FIELDS
  .filter(([_, s, e]) => s >= 80 && e <= 520)
  .map(([name, s, e]) => [name, s - 80, e - 80]);
 
/* Packet type label fix */
const PACKET_TYPE_NAME = { 1: "TelemetryPacket" };
 
/* Render each packet as a 2-column table */
function renderPacketsAsKVTables(dataArray) {
   const container = document.getElementById("dataTables");
  container.innerHTML = "";
 
  dataArray.forEach((pkt, idx) => {
    const title = document.createElement("div");
    title.className = "pkt-title";
    title.textContent = `Packet #${idx + 1}`;
    container.appendChild(title);
 
    const table = document.createElement("table");
    const thead = document.createElement("thead");
    thead.innerHTML = `<tr><th>Field</th><th>Value</th></tr>`;
    const tbody = document.createElement("tbody");
 
    /* Keep the same field order as SUB_FIELDS */
    for (const [name] of SUB_FIELDS) {
      addRow(tbody, name, pkt[name.replace(/\s+/g, '')]);
    }
 
    table.appendChild(thead);
    table.appendChild(tbody);
    container.appendChild(table);
  });
}
}


/* Parse button logic */
function parseTelemetry() {
document.getElementById("parseBtn").addEventListener("click", () => {
   const hex = document.getElementById("hexInput").value.trim().toLowerCase();
   const hex = cleanHex(document.getElementById("hexInput").value);
   const resultBody = document.querySelector("#resultTable tbody");
  const errors = document.getElementById("errors");
   resultBody.innerHTML = "";
   const headerBody = document.querySelector("#headerTable tbody");
   const dataTables = document.getElementById("dataTables");
  const jsonOut = document.getElementById("jsonOut");


  errors.textContent = "";
   if (!hex || !hex.startsWith("24")) {
  headerBody.innerHTML = "";
    alert("Invalid packet");
  dataTables.innerHTML = "";
    return;
  jsonOut.textContent = "";
  }
 
   if (!hex) { errors.textContent = "No data provided."; return; }
  if (!hex.startsWith("24")) { errors.textContent = "Invalid frame: Start Byte must be 0x24."; return; }


   const bits = hexToBits(hex);
   const bits = hexToBits(hex);
   const dataLenBits = bits.slice(8, 20);
   const output = (label, value) => {
  const countBits = bits.slice(20, 25);
    const row = document.createElement("tr");
 
    row.innerHTML = `<td>${label}</td><td>${value}</td>`;
  const dataLenBytes = bitsToInt(dataLenBits);
    resultBody.appendChild(row);
  const numItems = bitsToInt(countBits);
   };
  const imei = BigInt("0b" + bits.slice(25, 75)).toString();
  const pktTypeVal = bitsToInt(bits.slice(75, 80));
  const pktTypeName = PACKET_TYPE_NAME[pktTypeVal] || pktTypeVal.toString();
 
  const perItemBytes = numItems > 0 ? dataLenBytes / numItems : 0;
  const perItemBits = perItemBytes * 8;
  const totalBits = bits.length;
  const subStart = 80;
 
  if (!Number.isInteger(perItemBytes)) { errors.textContent = "Data Length not divisible by packet count."; return; }
  if (totalBits < subStart + perItemBits * numItems) { errors.textContent = "Frame too short for given count."; return; }
 
  /* Header table (2-column) */
  addRow(headerBody, "Start Byte", "$");
  addRow(headerBody, "Length", dataLenBytes);
   addRow(headerBody, "Data Items", numItems);
  addRow(headerBody, "IMEI", imei);
  addRow(headerBody, "Packet Type", pktTypeName);


  /* Build per-packet objects keyed by compact field name */
   const fields = [
   const dataArray = [];
    ["Start Byte", 0, 8], ["Data Length", 8, 20], ["No. of Packets", 20, 25],
  const KEY_MAP = new Map(FULL_FIELDS.map(([name]) => [name, name.replace(/\s+/g, '')]));
    ["IMEI", 25, 75], ["Packet Type", 75, 80], ["Packet Status", 80, 81],
    ["Frame Number", 81, 97], ["Alert ID", 97, 102], ["Operator", 102, 106],
    ["Signal Strength", 106, 111], ["MCC", 111, 121], ["MNC", 121, 131],
    ["Cell ID", 131, 147], ["LAC", 147, 163], ["Fix Status", 163, 164],
    ["Latitude", 164, 193], ["NS Indication", 193, 194], ["Longitude", 194, 223],
    ["EW Indication", 223, 224], ["HDOP", 224, 234], ["PDOP", 234, 244],
    ["Speed", 244, 259], ["Altitude", 259, 274], ["Power Status", 274, 275],
    ["Ignition Status", 275, 276], ["Immobilizer Status", 276, 277],
    ["Tamper", 277, 278], ["Supply Voltage", 278, 288], ["Internal Battery Voltage", 288, 294],
    ["Fuel Sensor Status 1", 294, 295], ["Fuel Percentage 1", 295, 305],
    ["Fuel Sensor Value 1", 305, 321], ["Fuel Sensor Status 2", 321, 322],
    ["Fuel Percentage 2", 322, 332], ["Fuel Sensor Value 2", 332, 348],
    ["Fuel Sensor Status 3", 348, 349], ["Fuel Percentage 3", 349, 359],
    ["Fuel Sensor Value 3", 359, 375], ["Analog Input 1", 375, 385],
    ["Analog Input 2", 385, 395], ["Digital Input 1", 395, 396],
    ["Digital Input 2", 396, 397], ["Digital Output 1", 397, 398],
    ["Digital Output 2", 398, 399], ["Temperature Sensor Status 1", 399, 400],
    ["Temperature 1", 400, 412], ["Temperature Sensor Status 2", 412, 413],
    ["Temperature 2", 413, 425], ["Temperature Sensor Status 3", 425, 426],
    ["Temperature 3", 426, 438], ["Humidity", 438, 445], ["Odometer", 445, 480],
    ["DateTime UTC", 480, 512], ["TimeZone", 512, 520]
  ];


   for (let i = 0; i < numItems; i++) {
   let tempDateTime = 0;
    const sbeg = subStart + i * perItemBits;
    const send = sbeg + perItemBits;
    const subBits = bits.slice(sbeg, send);
    const obj = {};


    for (const [name, s, e] of SUB_FIELDS) {
  for (const [label, start, end] of fields) {
      const b = subBits.slice(s, e);
    const val = bits.slice(start, end);
       let val;
    switch (label) {
 
      case "IMEI":
       if (name === "Temperature 1" || name === "Temperature 2" || name === "Temperature 3") {
        output(label, bigIntFromBits(val));
         val = bitsToSignedInt(b);
        break;
       } else if (name === "Supply Voltage" || name === "Internal Battery Voltage") {
      case "Latitude":
         val = bitsToInt(b) / 10;             // e.g., 123 -> 12.3 V
      case "Longitude":
      } else {
        output(label, bitsToInt(val) / 1e6);
         val = bitsToInt(b);
        break;
       }
       case "HDOP":
      obj[KEY_MAP.get(name)] = val;
      case "PDOP":
        output(label, bitsToInt(val) / 100);
        break;
       case "Speed":
        output(label, bitsToInt(val) / 100);
        break;
      case "Altitude":
      case "Supply Voltage":
      case "Internal Battery Voltage":
      case "Fuel Percentage 1":
      case "Fuel Percentage 2":
      case "Fuel Percentage 3":
      case "Analog Input 1":
      case "Analog Input 2":
        output(label, bitsToInt(val) / 10);
        break;
      case "Temperature 1":
      case "Temperature 2":
      case "Temperature 3":
        output(label, bitsToSignedInt(val) / 10);
        break;
      case "DateTime UTC":
         tempDateTime = bitsToInt(val);
        const utc = new Date(tempDateTime * 1000);
        output("DateTime (UTC)", utc.toISOString());
        break;
       case "TimeZone":
        const tz = bitsToSignedInt(val);
        const offsetMin = tz * 15;
        const sign = offsetMin >= 0 ? "+" : "-";
        const h = Math.floor(Math.abs(offsetMin) / 60);
        const m = Math.abs(offsetMin % 60);
        output("TimeZone", `${offsetMin} mins = UTC${sign}${h}:${m.toString().padStart(2, '0')}`);
         const localTime = new Date((tempDateTime + offsetMin * 60) * 1000);
        const formatted = localTime.toISOString().replace("T", " ").replace(".000Z", "");
         output("DateTime (Local Time)", formatted);
        break;
       default:
        output(label, bitsToInt(val));
     }
     }
    dataArray.push(obj);
   }
   }
 
}
  /* Render each packet as its own key/value table */
  renderPacketsAsKVTables(dataArray);
 
  /* JSON */
  const out = { StartByte: "$", Length: dataLenBytes, DataItems: numItems, IMEI: imei, PacketType: pktTypeName, Data: dataArray };
  jsonOut.textContent = JSON.stringify(out, null, 2);
});
</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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