Using the External Computer Data Link
MicronNav System
0656-SOM-00001-07
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© Tritech International Ltd.
7.2.5. Simrad HPR 410
This 3rd party output string is taken from the Simrad HPR positioning system. The binary
output telegram is 70 bytes long. The binary telegram includes a Telegram Header and Tail in
line with the Simrad HPR protocol. The contained Message Type is 'Message 1, Transponder
Position Data' (Data Block of 62 bytes).
The full binary telegram format is as follows:
‘HPR 410’ Reply Data Structure
Data Description
Data Range
Field Range
Header
Start Character
Always 55h
ShortCard
Block Length
1 to 65536
Cardinal
Message Type
Always 1
ShortCard
Destination
Always 0
ShortCard
Message Block (62 bytes)
Tp Index / ID (0 = Responder, 1..15 =
Transponder, 19=INS)
0 to 19
Cardinal
Operation Mode
Always 0
ShortCard
Sync Mode
Always 0
ShortCard
Tp Mode/Type
0 = Transponder, 10 = Responder
ShortCard
Tp Operation
Always 1 (Mobile Tp)
ShortCard
Pos Data Form
Bit 0 (0 = vessel, 1 = north)
ShortCard
Reply Status
Fixed at 0 (= Okay)
ShortCard
Filt x pos - Filtered Horiz Distance athwart from
reference pos (in metres)
-9.99999E-37 to +9.37
Real
Filt y pos - Filtered Horiz Distance fore/aft from
reference pos (in metres)
-9.99999E-37 to +9.37
Real
Filt z pos - Filtered Vert Distance from
reference pos (in metres)
-9.99999E-37 to +9.37
Real
X pos - Raw Horiz Distance athwart from
reference pos (in metres)
-9.99999E-37 to +9.37
Real
Y pos - Raw Horiz Distance fore/aft from
reference pos (in metres)
-9.99999E-37 to +9.37
Real
Z pos - Raw Vert Distance from reference pos
(in metres)
-9.99999E-37 to +9.37
Real
Slant Range - Raw Slant Range from
transducer to Transponder (in metres)
-9.99999E-37 to +9.37
Real
P course - Vessel heading Course (in degrees) -9.99999E-37 to +9.37
Real
P roll - Vessel Roll (+/-180 degs)
-9.99999E-37 to +9.37
Real
P pitch - Vessel Pitch (+/-180 degs)
-9.99999E-37 to +9.37
Real
Td beam
0 = wide, 1 = narrow
ShortCard
Td type
Not used, Always 0
ShortCard
Td num
Always 1
Cardinal
Diagnostic
Not used, Always 0
Cardinal
Standard deviation, unused
Always 0.0
Real