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Motus Reference Manual
Page 142 of 146
Version 1.1
29/11/2019
measurement point that all data is referenced to is the centre of the Motus unit. The
primary reference point offset can be used to adjust the measurement point to a
different location on the vehicle. The primary reference point offset applies to all data
output including NMEA etc as well as heave point 1. The other heave point offsets
apply only to heave points 2-4 in the Heave Packet.
Reference Points Offset Packet
Packet ID 194
Length 49
Field
#
Bytes
Offset
Data
Type
Size Description
1 0 u8 1 Permanent
2 1 fp32 4 Primary reference point offset X (m)
3 5 fp32 4 Primary reference point offset Y (m)
4 9 fp32 4 Primary reference point offset Z (m)
5 13 fp32 4 Heave point 2 offset X (m)
6 17 fp32 4 Heave point 2 offset Y (m)
7 21 fp32 4 Heave point 2 offset Z (m)
8 25 fp32 4 Heave point 3 offset X (m)
9 29 fp32 4 Heave point 3 offset Y (m)
10 33 fp32 4 Heave point 3 offset Z (m)
11 37 fp32 4 Heave point 4 offset X (m)
12 41 fp32 4 Heave point 4 offset Y (m)
13 45 fp32 4 Heave point 4 offset Z (m)
Table 111: Reference point offsets packet