LC Report
LC Report - Locator (Cell mode)
Allows approximate location using GSM cell triangulation when GPS signal is not available.
Locator mode precision depends on the operator’s cell density. In urban areas it can be 200-500m, in rural areas several kilometers.
Activate Locator mode
SLCXInitiates a cell location query.
Response
RLCX;...LC report format
>LC00;AAAAAA;BBBBBB;CDDD.DDDD;EFFF.FFFF;GGG;HH;IIIIII;JJJJ;KK;LLLL<Report fields
| Field | Description |
|---|---|
| 00 | LC report number (00) |
| AAAAAA | Date (DDMMAA) |
| BBBBBB | Time (HHMMSS) |
| CDDD.DDDD | Latitude (C: N/S, DDD.DDDD: degrees) |
| EFFF.FFFF | Longitude (E: W/E, FFF.FFFF: degrees) |
| GGG | Speed (always 000 in LC) |
| HH | Course/10 (always 00 in LC) |
| IIIIII | Input/output status |
| JJJJ | Event number |
| KK | Seconds elapsed since query |
| LLLL | Message number |
The KK field indicates how many seconds have passed since the SLCX query was initiated until the location response was received.
Available signals
| Signal | Description |
|---|---|
| LC00+ | A new cell position was received |
| LC01+ | A new server response was received |
Example usage with rule
>SRL10E;TRG=LC00+;ACC={GCY10H}<When a cell position is obtained (LC00+), sends a high priority CY report.
Considerations
| Aspect | Detail |
|---|---|
| Precision | Variable according to cell density |
| Availability | Requires GSM coverage |
| Consumption | Lower than GPS |
| Latency | Higher than GPS (depends on server) |
Compatibility
MTLegacy
C3Legacy
ULLegacy
SPLegacy
C5Legacy
ZE-IoT
SP-IoT
SM-IoT
Locator mode is useful as backup when the device loses GPS signal for extended time, for example in underground parking lots or closed containers.
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