Vaisala LT31 - Message 2 - LT31 Message Including PW Data (Optional)

User's Guide ______________________________________________________________________
174 _________________________________________________________________ M210667EN-C
Message 2 - LT31 Message Including PW
Data (optional)
Message 2 is of fixed length where, in addition to Message 1, present
weather (PW) values are shown.
NOTE
Present weather values are available only when a valid PW-Option-
Keyword has been entered (refer to the SET PW_OPTION command
string shown in Table 11 on page 150). If no valid keyword has been
entered, the present weather valu
es are replaced by a slash / (ASCII 47).
The message 2 format is as follows:
!LT1"VIS 10000.0 AL 00000000000000000000 BL 01000 AL 0 WMO
61 WMO15M 61 WMO60M 61RN1M 0.33 RNSUM 12.16 SNSUM 999
TMP 23.4 AL 0#CSUM$-*
Start at
Byte No.
Content Description
1
!
Start of the heading (ASCII 1)
2 LT LT31 sensor identifier
4 1 Unit identifier, if the ID is not defined it is
replaced by a space character
5
"
Start of the text (ASCII 2)
6 VIS 10000.0 MOR value, unit m, 1-min-average
18 AL 00000000000000000000 Alarm status of the LT31 system (see Table
13 on page 164)
42 BL 01000 Background luminance identifier and BL
value, unit, cd m
-2
51 AL 0 Alarm status of the background luminance
sensor (see Table 34 on page 173)
56 WMO
61 Instant WMO code
63 WMO15M 61 15-minute WMO code
73 WMO60M 61 60-minute WMO code
83 RN1M 0.33 Rain intensity 1-minute average, unit
mm h
-1
95 RNSUM 12.16 Rain sum, unit mm
108 SNSUM 999 Snow sum, unit mm
119 TMP 23.4
Temperature, C
129 AL 0 Alarm/status for PWD (see Table 33 on
page 173)
133
#
End of the text (ASCII 3)
134 CSUM Checksum CRC16
138
$
End of the transmission (ASCII 4)
139
-*
CR + LF (ASCII 13 + ASCII 10)