Vaisala FS11P - FD12 P Message 7

User's Guide _______________________________________________________________________
90 ___________________________________________________________________ M211107EN-C
FD12P Message 7
The FD12P message 7 emulation mode is selected with the command
SET MESSAGE TYPE FD12MSG7.
The message format of the emulated Vaisala FD12P message number 7 is
presented below:
!
FD A
∀
00 22848 24807 L 52 61 61 0.33 12.16 0 23.3 01000
−∗
-RA−∗
RERA−∗
#−∗
Data field explanations:
00 22848 24807 L 52 61 61 0.33 12.16 0 23.3 01000
-----BL cd/m2
----- TS temperature
---- cumulative snow sum
------ cumulative water sum
------ precipitation water intensity,mm/h
(1 minute average)
-- one hour present weather code, 0 ... 99
-- 15 minute present weather code, 0 ... 99
-- instant present weather code, 0 ... 99
--- instant present weather, NWS codes
----- visibility ten minute average, max 75000 m
----- visibility one minute average, max 75000 m
- 1=hardware error, 2 = hardware warning
- data status 0 = normal, (FD12 alarm limits not supported)
-RA , instant METAR weather codes
RERA , recent METAR weather (RE criteria used)
The total amount of characters in the message is 74. The transmission
times are: 2.5 s at 300 bps (10-bit char), 0.31 s at 2400 bps, 0.08 s at
9600 bps.
Message 7 consists of four lines. METAR present weather codes are
output on the second and third lines. These lines are not of fixed length
because METAR codes can be combined in many ways. The METAR
codes may also be left out, but the lines of the message are always
terminated by a carriage return and line feed characters.
The measured background luminance value will be displayed in cd/m
2
only if Vaisala LM21 Background Luminance sensor is attached to
FS11P. If a day/night switch is used, the background luminance value
will display the switch state (1 = day, 0 = night).