User`s guide

Chapter 7 ________________________________________________________________ Operation
VAISALA ______________________________________________________________________ 101
WMT700 Profile Commands
When the WMT700 profile is selected, you can use the commands listed
in this section to operate WMT700. In each of the command descriptions
below, <CR> is an ASCII carriage return control character and <LF> is
an ASCII line feed control character. Commands may be sent at any
speed. The command is executed when end-of-line character is received.
Each measurement mode command must start with the user-configurable
WMT700 address. It can be any string of printable ASCII characters,
with the maximum length of 30 characters. Characters <CR>, <LF> and
$ are not allowed. If you use 0 as the address in the command, WMT700
responds regardless of the configured address.
If messages have been enabled, WMT700 responds to an invalid
command with an error message. If the messages have been disabled,
WMT700 does not send any error messages. You can fetch the most
recent error data in configuration mode with the ERRORS command,
see section ERRORS — Get Error Codes and Counts on page 78.
Table 24 List of WMT700 Measurement Mode Commands
Command Description
$aMEAS Starts wind measurement. The duration of the measurement
is based on the user-configurable averaging time.
$aOPEN Switches the serial port to configuration mode.
$aPOLL,y Fetches data from WMT700.
$aSLEEP Switches WMT700 from normal operating mode to low-power
mode.
where
$ = Fixed text.
a = WMT700 address. If the value is 0, it refers to any
WMT700 address.
y = Identification number for the data message format. For a
list of the data message formats, see Table 23 on page 93.