RMC
Applicable to: UC6580, UM620 series, UM621 series, UM670A, UM680A, UM681A.
| Syntax | $--RMC,time,status,Lat,N,Lon,E,spd,cog,date,mv,mvE,mode,navStates*cs\r\n | |
|---|---|---|
| Example | $GPRMC,060845.00,A,4004.74005,N,11614.19613,E,0.000,,180817,,,A,V*0B\r\n | |
| Description | The recommended minimum data | |
| Input/Output | Output | |
| Parameter Definition | ||
| Parameter | Format | Description |
| -- | STR | Positioning system flag GP - GPS standalone positioning GB - BDS standalone positioning GA - Galileo standalone positioning GL - GLONASS standalone positioning GI - NavIC standalone positioning GN - Dual or multiple constellations joint positioning |
| time | STR | UTC time; in the format of hhmmss.ss: hh - Hours mm - Minute ss.ss - Second |
| status | STR | Position valid indicator: V - Invalid A - Valid |
| Lat | STR | Latitude; in the format of ddmm.mmmmm or ddmm.mmmmmmm: dd - Degree mm.mmmmm - Minute (applicable to UC6580, UM620 series, UM621 series, UM670A) mm.mmmmmmm - Minute (applicable to UM680A, UM681A) |
| N | STR | North or south latitude indicator: N - North latitude S - South latitude |
| Lon | STR | Longitude; in the format of dddmm.mmmmm or ddd mm.mmmmmmm: ddd - Degree mm.mmmmm - Minute (applicable to UC6580, UM620 series, UM621 series, UM670A) mm.mmmmmmm - Minute (applicable to UM680A, UM681A) |
| E | STR | East longitude or west longitude indicator: E - East longitude W - West longitude |
| spd | DOUBLE | Speed over ground; unit: knot; fixedly output 3 decimal places |
| cog | DOUBLE | Course over ground; unit: deg; fixedly output 2 decimal places; calculated clockwise from north |
| date | STR | UTC date; in the format of ddmmyy: dd - Day mm - Month yy - Year |
| mv | DOUBLE | Magnetic variation; specified to null |
| mvE | STR | Magnetic variation direction; specified to null |
| mode | STR | Positioning mode: N - Not positioning A - Single point positioning D - Differential positioning E - INS positioning F - RTK floating solution R - RTK fixed solution |
| navStates | STR | Navigation states flag; fixedly output ‘V’: V - Device does not provide navigation state information |
| cs | U8 | Checksum; two hexadecimal characters obtained by calculating an XOR of all characters between but not including ‘$' to ‘*' in this message |