u-blox ZED-F9P Interface Description - Manual
Advance Information
4.2 Standard Messages
Standard Messages: i.e. Messages as defined in the NMEA Standard.
4.2.1 DTM
4.2.1.1 Datum Reference
Message
DTM
Description
Datum Reference
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Output Message
Comment
This message gives the difference between the current datum and the reference datum.
The current datum defaults to WGS84.
The reference datum cannot be changed and is always set to WGS84.
ID for CFG-MSG Number of fields
Message Info
0xF0 0x0A 11
Message Structure:
$xxDTM,datum,subDatum,lat,NS,lon,EW,alt,refDatum*cs<CR><LF>
Example:
$GPDTM,W84,,0.0,N,0.0,E,0.0,W84*6F
$GPDTM,999,,0.08,N,0.07,E,-47.7,W84*1C
Field
No.
Name Unit Format Example Description
0 xxDTM - string $GPDTM DTM Message ID (xx = current Talker ID)
1 datum - string W84 Local datum code: W84 = WGS84, 999 = user
defined
2 subDatum - string - A null field
3 lat min numeric 0.08 Offset in Latitude
4 NS - character S North/South indicator
5 lon min numeric 0.07 Offset in Longitude
6 EW - character E East/West indicator
7 alt m numeric -2.8 Offset in altitude
8 refDatum - string W84 Reference datum code (always W84 = WGS 84)
9 cs - hexadecimal *67 Checksum
10 <CR><LF> - character - Carriage return and line feed
UBX-18010854 - R04 Advance Information Page 12 of 259