Vaisala WMT52 - Manual (Page 74)

User’s Guide ______________________________________________________________________
72 ___________________________________________________________________M210925EN-B
8, Sensor and Data Message Settings, on page 95 . The data is outputted
when requested. In this mode all the commands presented in this
chapter are available.
For changing the message parameters, units and other settings, see
Chapter 8, Sensor and Data Message Settings, on page 95 .
In the Native SDI-12 mode (aXU,M=S) the WMT52 is in idle state
most of the time (power consumption < 1 mW). More power is
consumed only during the measurements and data transmit requested by
the host device. Especially, the wind measurement typically consumes
60 mW average power (with 4 Hz sampling rate), throughout the
averaging period. In the Continuous mode (aXU,M=R) the power
consumption is determined by the internal update intervals of the sensor
and wind averaging time. These have certain limits so very long
measurement intervals cannot be achieved in this mode. Also the power
consumption between the measurements is about three times that of the
Native mode.
Address Query Command (?)
This command is used to query the address of the device on the bus.
If more than one sensor is connected to the bus, they will all respond,
causing a bus collision.
Command format: ?!
The response:
a<cr><lf>
Example (device address 0):
where
?
= Address query command
! = Command terminator
where
a
= Device address (default = 0)
<cr><lf> = Response terminator