Data Sheet

GPS Module
L80 GPS Protocol Specification
L80_GPS_Protocol_Specification Confidential / Released 7 / 41
2 Standard NMEA Packet Protocol
L80 supports NMEA 0183 standard messages. The following table shows the structure of a NMEA 0183
standard message.
Table 1: Structure of NMEA message
Filed
Length(bytes)
Description
$
1
Each NMEA message starts with ‘$’
Talker ID
1~2
‘GP’ for a GPS receiver.
NMEA
message ID
3
NMEA message ID
Data Field
Variable, depend on the NMEA
message type
Data fields, delimited by comma ‘,’
*
1
End character of data field
Checksum
2
A hexadecimal number calculated by exclusive OR of
all characters between ‘$’ and ‘*’
<CR><LF>
2
Each NMEA message ends with ‘CR’ and ‘LF’
The default output message of L80 has the following seven sentences: RMC, VTG, GGA, GSA, GSV and
GLL and GPTXT.
2.1. GPRMC
RMC, Recommended Minimum position data (including position, velocity and time).
Example:
$GPRMC,013732.000,A,3150.7238,N,11711.7278,E,0.00,0.00,220413,,,A*68
Field
Description
NOTE
Quectel
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