Vaisala WS425FG - Manual (Page 41)

Chapter 4 ________________________________________________________________ Operation
VAISALA_______________________________________________________________________ 39
All user configuration parameters are stored in the non-volatile
memory.
Command Set
There are 18 interrogation requests that the host system and/or operator
can send to the Ultrasonic Wind sensor. They are listed below. The
sensor response to each command consists of a fixed-length message.
In each of the command descriptions below, CR is an ASCII carriage
return control character and LF is an ASCII line feed control character.
The WA command is executed by the ASOS at an interval of between
one and thirty seconds. For the WA command, the sensor responds to
the ASOS interrogation poll within 250 milliseconds of receiving the
NOTE
The Ultrasonic Wind sensor only responds to upper case characters.
Table 3 Ultrasonic Wind Interrogation Requests
ASCII Request Description
WB Baud rate control
WFIRMWARE Downloading firmware
WA Average wind speed and direction message
WL Heater function automatically controlled by sensor
WM Heaters locked on
WN Heaters locked off
WS Verbose BIT results and status
WJ Set speed and direction averaging time
WD Report BIT status
WF Send test data message
WR Execute system reset
WCAL Sensor self calibration
WH Display sensor command Help menu
WT Short response BIT results and status
WSST Return static speed of sound and sonic
temperature
WSTK Calibrate static speed of sound and sonic
temperature from ambient temperature
WCDV Return sensor self calibration data
WATE Return sensor measurement with reduced signal
amplitude