Saab R5 - ROT Rate of Turn Sentence; VBW Dual Ground Water Speed Sentence; VTG Course Over Ground Speed Sentence; ZDA Time and Date Sentence

R5 SOLID AIS System
INTERPRETATION OF INPUT SENTENCES
7000 118-200, C2 Page 68
8.1.9 ROT – Rate of turn
The rate of turn value is only used if the talker identifier is TI.
Otherwise the value will only be used to determine the direction, i.e.
”Moving Right” or ”Moving Left”.
$--ROT,x.x,A
Field
Format
Name
Comment
1
--ROT
Sentence Id
Used
2
x.x
Rate of turn
Used if Status is set to ‘A’
3
A
Status
Used
8.1.10 VBW - Dual Ground / Water Speed
The current position source must be external GPS, and heading must
be available for the transponder to accept this sentence.
$--VBW,x.x,x.x,A,x.x,x.x,A,x.x,A,x.x,A
Field
Format
Name
Comment
1
--ROT
Sentence Id
Used
2
x.x
Longitudinal water speed
Ignored
3
x.x
Transverse water speed
Ignored
4
A
Status: water speed
Ignored
5
x.x
Longitudinal ground speed
Used if Status is set to A
6
x.x
Transverse ground speed
Used if Status is set to A
7
A
Status: ground speed
Used
8
x.x
Stern transverse water speed
Ignored
9
A
Status stern water speed
Ignored
10
x.x
Stern transverse ground speed
Ignored
11
A
Status stern ground speed
Ignored
8.1.11 VTG – Course over ground and ground speed
$--VTG,x.x,T,x.x,M,x.x,N,x.x,K,a
Field
Format
Name
Comment
1
--VTG
Sentence Id
Used
2
x.x
Course over ground, degrees
true
Used
3
T
4
x.x
Course over ground, degrees
magnetic
Ignored
5
M
6
x.x
Speed over ground, knots
Used
7
N
8
x.x
Speed over ground, km/h
Ignored
9
K
10
a
Mode indicator
Used
8.1.12 ZDA – Time and date
This message is only interpreted if it’s received from the internal GPS
(the time synchronisation source).
$--ZDA,hhmmss.ss,xx,xx,xxxx,xx,xx
Field
Format
Name
Comment
1
--ZDA
Sentence Id
Used
2
hhmmss.
ss
UTC
Used
3
xx
Day (UTC)
Used
4
xx
Month (UTC)
Used
5
xxxx
Year (UTC)
Used
6
xx
Local zone hours
Ignored
7
xx
Local zone minutes
Ignored