Vaisala WS425FG - Manual (Page 42)

User's Guide ______________________________________________________________________
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request. The WD, WT, WF, and WR commands are executed by the
ASOS periodically to perform diagnostic checks.
The WH, WS, WSST, WSTK, WCDV, and WATE commands are
primarily initiated by an operator accessing the sensor via an external
laptop through the sensor's RS-232 port.
WB Command
This command is used to control the baud rate. The command format is:
WB9600 CR LF
When the command is received, the sensor will terminate
measurements and will respond with the following:
BAUD RATE 9600 after re-initialization CR LF
Please wait for the completion of configuration change save CR LF or
another value instead of 9600 as chosen.
The sensor will then resume normal operations after performing a
complete power up self-test. The next command character must be at the
new baud rate. The character framing will remain 8 data bits, no parity,
one start and stop bit. The new operating state will be maintained
through power cycles in the non-volatile memory.
VFIRMWARE Command
This command is used to invoke firmware downloads. The command
format is:
WFIRMWARE CR LF
where
9600
= In this case, represents 9600 bps, and would be replaced
with 2400 bps or 4800 bps as required to select those
values for a baud rate.
CR = Carriage return (ASCII control character)
LF = Line feed (ASCII control character)