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021408/04/21
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Page 27 of 28
COM1 and COM1’ Output (External Winddisplay LED)
Output of the telegrams for display of Rel./True Wind on the external Winddisplays takes
place via COM1. Output of the telegrams „Relative Wind“ [
R
] and „True Wind“ [
T
] takes
place alternately with an interval of at least 50 ms.
The status controls the output of Rel. / True Wind values on the external Winddisplays. An
„a“ in the status of either of the sent telegrams renders compulsory the display of wind values
with an „a“ in the protocol. An „A“ in the status of both telegrams permits Rel./True Wind
transfer to the external Winddisplays. The status setting takes place in connection with the
Mode function MODES 3 & 2 (refer to chapter 9).
Mode 3
(Remote)
Mode 2
(Rel./true)
MWV Rel.-protocol
MWV True-protocol
3-0
True
$WIMWV………A…
$WIMWV………a…
3-0
Rel.
$WIMWV………a…
$WIMWV………A..
3-1
No influence $WIMWV………A…
$WIMWV………A...
General to receive NMEA-telegrams (COM2 + COM3):
•
Maximum length of the telegrams: 64 characters
•
Recommended minimum distance between the ends (<LF> - character) of all NMEA-
telegrams: 100ms
•
The telegram identification can be changed between all 5 characters (instrument and
data record ID) or only between the last 3 characters (data record IC) – refer to
chapter 9 MODE 5.
Example for HDT-telegram:
•
Setting MODE 5-0 (3-digit filter mask without instrument-ID):
Telegram must contain „$__HDT“
•
Setting MODE 5-1 (5-digit filter mask with instrument-ID):
Telegram must contain „$HEHDT“
telegram
R
telegram
T
telegram
R
$WI
MWV
,ddd.d,R,ss.s,M,A*HL<CR><LF
Value of wind velocity in m/s
Unit: m/s
R
= relative wind /
T
= true wind
Value of wind direction in degrees
Status: A(a)=valid, V=invalid
