WindSonic Doc No 1405 PS 0019 Issue 28 November 2019
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9.5 NMEA Format (Gill status Codes)
The Wind Direction, Wind Speed, and Units are as described in Section 9.1.
The Instrument Type – IIMWV - is a mnemonic for Integrated Instrument Mean Wind
direction & Velocity (alternative start of string format WIMWV can be selected).
The Gill Status codes are as described in Para 11.5.
A typical WindSonic configuration suitable for NMEA (See Section 10):
M16, U1, O1, L1, P1, B3, H1, NQ, F1, E2, T1, S4, C2, G0, K50
Consult specification NMEA 0183 version 3 (available on the web) for complete interface
details.
9.6 Gill format – Tunnel Mode (UU, Continuous)
In this mode, the output is given as a signed figure (i.e. positive or negative) along the
‘U’ (= South – North) axis.
Direction is indicated by a 0 or 1.
Where:
<STX> = Start of string character (ASCII value 2)
WindSonic node address = Unit identifier
U axis = U axis Wind Speed
U axis U axis Wind Direction Polarity where: -
0 (–U vector) is a wind from the North direction or
1 (+U vector) is a wind from the South direction.
See Section 9.1 for other string information.
$ IIMWV, 120, R, 002.10, M, 00*5D
Relative wind measurement
STX> Q, 001.59, 1, 00, M, <ETX> 2D
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