Vaisala FS11 - FD12 P Message 7

Chapter 4 _________________________________________________________________ Operation
VAISALA ________________________________________________________________________ 81
FD12P Message 7
The FD12P message 7 emulation mode is selected with command SET
MESSAGE TYPE FD12MSG7.
The message format of the emulated Vaisala FD12P message number 7 is
presented below:
!
FD A
∀
00 22848 24807 /// // // // ////// ////// //// 23.3
01000
−∗
#−∗
where
!
=
Start of the heading
FD
=
FS11 sensor identifier
A
=
First character of the unit identifier, if the ID
is not defined it i
s replaced by a space
character
∀
=
Start of the text
First number
=
Data status
0=normal, FD12 alarm limits not supported
Second number
=
Hardware status
0=OK
1=Alarm
2=Warning
22848
=
Visibility 1 min average in meters (max.
75000m)
24807
=
Visibility 10 min average in meters (max.
75000m)
23.3
=
TS temperature
01000
=
BL cd/m
2
#
=
End of the text
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. FD12P uses the second and third lines
for METAR codes. Visibility Sensor FS11 does not provide METAR
codes during the emulation of FD12P message 7. The METAR codes are
left out, but the lines of the message are terminated by a carriage return
and line feed characters.