Device Info Packet
| 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 | |
| Number of data packets | 5 | 20–24 | Number of packets (0–32) | 0–32 |
| IMEI | 50 | 25–74 | Unique device identifier | |
| Packet type | 5 | 75–79 | Type of packet | 00 - Device Info |
| Data | ||||
| Time | 32 | UTC Timestamp | UTC time in seconds | |
| Time Zone | 8 | Timezone in quarter-hours (e.g., 22 = +5:30), quarter-hour increment means each unit represents 15 minutes. The value 22 represents 22 quarter hours. Ranges from -48 to 56, negative timezone to 2's complement representation | eg: 22 (+5:30) → 22×15=330 minutes → 330÷60=5.5 hours → 5 hours and 30 minutes | |
| ICCID | 160 | 20 Bytes, Character string | 8991000903297069053F | |
| VID | 32 | 4 Bytes, Character string | TRAN | |
| CELLULAR_MODULE_FV NAME | 40 | 5 Bytes, Character string | TSPJT | |
| CELLULAR_MODULE_FV VERSION | 80 | 10 Bytes, Character string | XX.YY.ZZZZ | |
| CELLULAR_MODULE_FV BUILD NO | 40 | 5 Bytes, Character string | YYDDD | |
| MCU_APP_MODULE_FV NAME | 40 | 5 Bytes, Character string | TSPJT | |
| MCU_APP_MODULE_FV VERSION | 80 | 10 Bytes, Character string | XX.YY.ZZZZ | |
| MCU_APP_MODULE_FV BUILD NO | 40 | 5 Bytes, Character string | YYDDD | |
| MCU_BTL_MODULE_FV NAME | 40 | 5 Bytes, Character string | TSPJT | |
| MCU_BTL_MODULE_FV VERSION | 80 | 10 Bytes, Character string | XX.YY.ZZZZ | |
| MCU_BTL_MODULE_FV BUILD NO | 40 | 5 Bytes, Character string | YYDDD | |
| VN | 80 | 10 Bytes, Character string | KL07CP8490 | |
| HWINFO | 88 | 11 Bytes, Character string | PCB-0220-AB | |
| Tail(2 Bytes) | ||||
| 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": "2406e0e1cabd09208ca06822dac31638393931393530393132393633373932393630000000000545344324720322e20302e202020312020202030545344324e20312e20312e202020313235303935545344324220302e20302e2020203020202020305e0100005e0100005e015043422d303232302d41422a1c", "cmfv_build": "0", "cmfv_name": "TSD2G", "cmfv_version": "2. 0. 1", "dateTime": 1747114691, "dateTime_tz": "2025-05-13 11:08:11.000", "hwinfo_build": "PCB-0220-AB", "iccid": "8991950912963792962\u0000", "imei": 860187062240357, "insert_time": "Tue, 13 May 2025 05:38:15 GMT", "mcua_build": "25095", "mcua_name": "TSD2N", "mcua_version": "1. 1.1", "mcub_build": "0", "mcub_name": "TSD2B", "mcub_version": "0.0.0", "packetType": 0, "send_time": "2025-05-13 11:08:11", "timezone": 22, "vid": "\u0000\u0000\u0000\u0000", "vn": "^\u0001\u0000\u0000^\u0001\u0000\u0000^\u0001"