Using the External Computer Data Link
MicronNav System
0656-SOM-00001-07
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7.2.3. TP-2EC
This 3rd party output string is taken from the Trackpoint positioning system. The string has
68 characters and the format is ASCII fixed field with space separators. Leading 0’s (except
time) are space filled. X,Y,Z co-ordinate positions are relative values unless GPS is active in
which case the co-ordinate outputs become Easting, Northing and Depth respectively.
The full string format is as follows:
‘TP-2EC’ Reply Data Structure
Data Description
Data Range
Field Range
Unit ID, in Hex (0 = Responder, 1..F =
Transponder, 13=INS)
0 to Fh (0 to 19)
i
Fix Time (Local Time)
00:00:00 to 23:59:59
hh:mm:ss
Compass Heading (degrees)
0 to 359
ccc
Position Bearing (degrees)
0 to 359.9
bbb.b
Position Slant Range (metres)
0 to 99999.9
rrrrr.r
X (or Easting)
0 to 999999.9
xxxxxx.x
Y (or Northing)
0 to 999999.9
yyyyyy.y
Z (or Depth)
0 to 99999.9
zzzzz.z
Telemetry
Always 0.0
t.t
Error
‘ ‘(No Error)
or
‘ 6’ (Lost Signal)
ee
(Carriage Line Feed)
N/A
<CR><LF>
Example:
GPS is active so co-ordinates are World. Unit ID = 0 (Responder), Fix taken at 15:33:02, Compass
Heading = 337º, Position Bearing = 277.6º, Position Slant Range = 20.8m, X Co-ord (East) of
503871.9, Y Co-ord (North) of 602501.0, Z Co-ord (Depth) of 13.0m, No Error.
ASCII Output Always (on a single line) =
“0*15:33:02*337*277.6****20.8*503871.9* 602501.0****13.0******0.0***<CR><LF>”
Where; “*” is a space (ASCII code 32), “<CR>” is Carriage Return (ASCII code 13), “<LF>” is Line
Feed (ASCII code 10).
