Vaisala FS11P - Message 1, Fs11 P

User's Guide _______________________________________________________________________
80 ___________________________________________________________________ M211107EN-C
MESSAGE 1, FS11P
Message 1 is a message of fixed length where both extinction coefficient
and background luminance values are shown. The message format is as
follows:
!
FSA
∀
EXT 0.85 AL 0 ALS 8746 AL 0
#
CSUM
∃−∗
where
!
=
Start of the heading (ASCII 1)
FS
=
FS11P sensor identifier
A
=
First character of the unit identifier, if the ID is not
defined it is replaced by a space character
∀
=
Start of the text (ASCII 2)
EXT 0.85
=
Extinction coefficient identifier and extinction
coefficient value, unit km
-1
, 1 min average
AL 0
=
Alarm status of the visibility sensor
ALS 8746
=
Background luminance identifier and BL value, unit
foot
-lambert. A foot-lambert equals 1 / π candela per
square foot, or 3.426 cd/m
2
AL 0
=
Alarm status of the background luminance sensor
#
=
End of the text (ASCII 3)
CSUM
=
Checksum CRC16
∃
End of the transmission (ASCII 4)
−∗
CR + LF (ASCII 13 + ASCII 10)
The total amount of characters in the message is 43. The transmission
times are: 1.5 s at 300 bps (10-bit char), 0.19 s at 2400 bps, 0.05 s at
9600 bps.