Using the External Computer Data Link MicronNav System
0656-SOM-00001-07 115 © 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 +9.99999E+37 Real
Filt y pos - Filtered Horiz Distance fore/aft from
reference pos (in metres)
-9.99999E-37 to +9.99999E+37 Real
Filt z pos - Filtered Vert Distance from
reference pos (in metres)
-9.99999E-37 to +9.99999E+37 Real
X pos - Raw Horiz Distance athwart from
reference pos (in metres)
-9.99999E-37 to +9.99999E+37 Real
Y pos - Raw Horiz Distance fore/aft from
reference pos (in metres)
-9.99999E-37 to +9.99999E+37 Real
Z pos - Raw Vert Distance from reference pos
(in metres)
-9.99999E-37 to +9.99999E+37 Real
Slant Range - Raw Slant Range from
transducer to Transponder (in metres)
-9.99999E-37 to +9.99999E+37 Real
P course - Vessel heading Course (in degrees) -9.99999E-37 to +9.99999E+37 Real
P roll - Vessel Roll (+/-180 degs) -9.99999E-37 to +9.99999E+37 Real
P pitch - Vessel Pitch (+/-180 degs) -9.99999E-37 to +9.99999E+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
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