User's Manual

8-11
(2.1.28) TXT – Text transmission
$--TXT,xx,xx,xx,c--c*hh<CR><LF>
Text message
Text identifier
Sentence number, 01 to 99
 Total number of sentences, 01 to 99
(2.1.29) TRL – AIS transmitter non functioning log
$--TRL,x.x,x.x,x,xxxxxxxx,xxxxxxxx,hhmmss.ss,xxxxxxxx,hhmmss.ss,x,*hh<CR><LF>
Reason code
Switch on UTC time
 Switch on date
Switch off UTC time
Switch off date
Sequential message identifier
Log entry number
Total number of log entries
(2.1.30) VBW – Dual ground/water speed
$--VBW, x.x, x.x, A, x.x, x.x, A, x.x, A, x.x, A*hh<CR><LF>
Status: stern ground speed,
A = data valid, V = data invalid
Stern transverse ground speed, knots
Status: stern water speed,
A = data valid, V = data invalid
Stern transverse water speed, knots
Status, ground speed,
A = data valid, V = data invalid
Transverse ground speed, knots
Longitudinal ground speed, knots
Status: water speed, A = data valid, V = data invalid
Transverse water speed, knots
Longitudinal water speed, knots
(2.1.31) VDM – VHF Data-link Message
!--VDM,x,x,x,a,s--s,x*hh<CR><LF>
Number of fill-bits, 0 to 5
Encapsulated ITU-R M.1371 radio message
AIS Channel, "A" or "B"
Sequential message identifier, 0 to 9
Sentence number, 1 to 9
Total number of sentences needed to transfer the message, 1 to 9