Data Sheet

GPS Module
L80 GPS Protocol Specification
L80_GPS_Protocol_Specification Confidential / Released 34 / 41
Checksum
Hexadecimal checksum
<CR><LF>
Each of message
3.26. Packet Type: 500 PMTK_DT_FIX_CTL
This message is the response to PMTK_API_Q_FIX_CTL.
Example:
$PMTK500,1000,0,0,0,0*1A<CR><LF>
Field
Description
$
Each NMEA message starts with ‘$’
PMTK
MTK proprietary message
Packet type
500
Fix interval
Position fix interval [msec]. Greater than 100.
Reserved
Always 0
Reserved
Always 0
Reserved
Always 0
Reserved
Always 0
*
End character of data field
Checksum
Hexadecimal checksum
<CR><LF>
Each of message
3.27. Packet Type: 501 PMTK_DT_DGPS_MODE
This message is the response to PMTK_API_Q_DGPS_MODE.
Example:
$PMTK501,1*2B<CR><LF>
Quectel
Confidential