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Press select a third time, and the minimum/maximum and form feed options 0 through 7 may be
selected as illustrated in the table below:
SETTING
MIN/MAX
FORM FEED RAIN RATE
0 OFF
OFF OFF
1 ON
OFF OFF
2 OFF
OFF OFF
3 ON
ON OFF
4 OFF
OFF ON
5 ON
OFF ON
6 OFF
OFF ON
7 ON
ON ON
When rain rate is off, term rain is substituted.
Press select a fourth time to select the baud rate of the serial output. Press the maximum and
minimum keys to change the display.
Press select a fifth time to select log interval hours. The log interval tells the Weather Report to
send data to the internal memory and at what interval to do so. Press the maximum or minimum to
change the display.
Press select a sixth time to select the log interval minutes. Press the maximum or minimum to
change the display.
Press select a seventh time and a number between 0 and 255 will appear in the pressure/humidity
window which represents output options. Enter the proper option number by pressing the
maximum or the minimum keys. The output options control the selection of such things as AM PM,
wind speed knots, auxiliary display and average wind speed output. (Look at the first item in the
reference section called control options for more information, page 18.)
Press select a eighth time and the unit will return to a normal display.
Communicating with the WR-25
Connect the 9pin female DB-9 plug of one end of the supplied RS-232 cable into the male DB-9
plug of the WR-25. Plug the other end of the RS-232 cable using either the DB-25 or the DB-9
female plugs into a open com port on your computer (all com ports on computers are either 9pin
male or 25 pin males). If you do not use the supplied cable, please note that a null modem adapter
is required to properly talk to a computer, the supplied cable has one built in.
The WR-25 via its RS-232 interface can communicate with computers running either the optional
TWI-LOG program or standard computer communication programs. The WR-25 responds to the
following ASCII characters sent by computers, with ASCII space delimited text.
Command Characters
WR-25 Instruction Manual
Texas Weather Instruments, Inc. WR-25 Instruction Manual