Chapter 8 ____________________________________________ Sensor and Data Message Settings
VAISALA______________________________________________________________________ 129
Setting Fields
The parameter order is shown in the following table:
[R] = Parameter selection: This field consists of 16 bits
defining the wind parameters included in the data
messages. The bit value 0 disables and the bit value 1
enables the parameter.
Bits 1-8 determine the
parameters in the data
message obtained with the
following commands:
-ASCII: aR1 and ar1
-NMEA 0183: $--WIQ,XDR*hh
-SDI-12: aM1, aMC1, aC1, and
aCC1
-SDI-12 continuous: aR1 and
aRC1
1st bit (most left) Dn Direction minimum
2nd bit Dm Direction average
3rd bit Dx Direction maximum
4th bit Sn Speed minimum
5th bit Sm Speed average
6th bit Sx Speed maximum
7th bit output mode
8th bit spare
& delimiter
Bits 9-16 determine the wind
parameters in the composite
data message obtained with
the following commands:
-ASCII: aR0, ar0
-NMEA 0183: aR0, ar0
-SDI-12: aM, aMC, aC, and aCC
-SDI-12 continuous: aR and
aRC
9th bit Dn Wind direction minimum
10th bit Dm Wind direction average
11th bit Dx Wind direction maximum
12th bit Sn Speed minimum
13th bit Sm Speed average
14th bit Sx Speed maximum
15th bit spare
16th bit (most right) 0
[I] = Update interval: 1 ... 3600 seconds
[A] = Averaging time: 1 ... 3600 seconds
Defines the period over which the wind speed and
direction averaging is calculated. Same period is also
used for maximum and minimum calculation. See
Appendix D Wind Measurement Averaging Method
on page 201 for difference in averaging practices
when A<I and A>I.
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