Vaisala WMT52 - Manual (Page 85)

Chapter 7 __________________________________________________ Getting the Data Messages
VAISALA_______________________________________________________________________ 83
Acknowledge Active Command (a)
This command is used to ensure that a device is responding to a data
recorder or another device. It asks a sensor to acknowledge its presence
on the bus.
Command format: a<cr><lf>
The response:
a<cr><lf>
Example:
0<cr><lf>
0<cr><lf>
MWV Wind Speed and Direction
Query
Request the wind speed and direction data with a MWV query
command. For using MWV query the NMEA Wind formatter
parameter in the wind sensor settings shall be set to W (see section
Wind Sensor on page 95 ). With MWV query only wind speed and
direction average values can be requested. For obtaining min and max
data for speed and direction, see section
XDR Transducer Measurement
Query on page 85 .
where
a
= Device address
<cr><lf> = Command terminator
where
a
= Device address
<cr><lf> = Response terminator