u-blox ZED-F9P Interface Description - Manual
Advance Information
VLW continued
Field
No.
Name
Unit
Format
Example
Description
9
cs
-
hexadecimal
*06
Checksum
10
<CR><LF>
-
character
-
Carriage return and line feed
4.2.17 VTG
4.2.17.1 Course over ground and Ground speed
Message
VTG
Description
Course over ground and Ground speed
Firmware
Supported on:
•
u-blox 9 with protocol version 27
Type
Output Message
Comment
Velocity is given as Course over Ground (COG) and Speed over Ground (SOG).
ID for CFG-MSG
Number of fields
Message Info
0xF0 0x05
12
Message Structure:
$xxVTG,cogt,T,cogm,M,knots,N,kph,K,posMode*cs<CR><LF>
Example:
$GPVTG,77.52,T,,M,0.004,N,0.008,K,A*06
Field
No.
Name
Unit
Format
Example
Description
0
xxVTG
-
string
$GPVTG
VTG Message ID (xx = current Talker ID)
1
cogt
degr
ees
numeric
77.52
Course over ground (true)
2
T
-
character
T
Fixed field: true
3
cogm
degr
ees
numeric
-
Course over ground (magnetic). Only supported in
ADR 4.10 and above.
4
M
-
character
M
Fixed field: magnetic
5
knots
knot
s
numeric
0.004
Speed over ground
6
N
-
character
N
Fixed field: knots
7
kph
km/
h
numeric
0.008
Speed over ground
8
K
-
character
K
Fixed field: kilometers per hour
9
posMode
-
character
A
Mode Indicator, see
position fix flags description
NMEA v2.3 and above only
10
cs
-
hexadecimal
*06
Checksum
11
<CR><LF>
-
character
-
Carriage return and line feed
UBX-18010854 - R04
Advance Information
Page 26 of 259