57 - 70
71130/11E/0318
11 Appendix 1 Predefined data telegrams
11.1 Telegram 1 VDT
Wind speed, Wind direction and Temperature
Command: TR1 / Command: TT1 (with DT=0, see also Command DT and OP=0,
see also Command OP)
Telegram structure:
Position Length
Example
Description
Meas. error
1
1
<STX>
Start of Text character (HEX 02).
<STX>
2
5
# # # . #
Wind speed unit [m/s], see Command OS.
F F F . F
7
1
’ ’
Blank character (HEX 20).
’ ’
8
3
# # #
Wind direction [°].
F F F
11
1
’ ’
Blank character (HEX 20).
’ ’
12
5
# # # . #
Temperature [°C].
F F F . F
17
1
’ ’
Blank character (HEX 20).
’ ’
18
1
*
Asterisk (identifier for following check sum).
’*’
19
2
CC
Check sum (XOR).
CC
21
1
<CR>
Carriage return (HEX 0D).
<CR>
22
1
<ETX>
End of TeXt character (HEX 03).
<ETX>
Extension of telegram possible to include date and time; s. section 9, Command DT.
11.2 Telegram 2 VDTHP
Wind speed, Wind direction, Temperature, Relative humidity and Air pressure
Command: TR2 / Command: TT2 (with DT=0, see also Command DT and OP=0,
see also Command OP)
Telegram structure:
Position Length
Example
Description
Meas. error
1
1
<STX>
Start of Text character (HEX 02).
<STX>
2
5
# # # . #
Wind speed unit [m/s], see Command OS.
F F F . F
7
1
’ ’
Blank character (HEX 20).
’ ’
8
3
# # #
Wind direction [°].
F F F
11
1
’ ’
Blank character (HEX 20).
’ ’
12
5
# # # . #
Temperature [°C].
F F F . F
17
1
’ ’
Blank character (HEX 20).
’ ’
18
3
# # #
Relative humidity [%].
F F F
21
1
’ ’
Blank character (HEX 20).
’ ’
22
6
# # # # . #
Air pressure [hPa].
F F F . F
28
1
’ ’
Blank character (HEX 20).
’ ’
29
1
*
Asterisk (identifier for following check sum).
’*’
30
2
CC
Check sum (XOR).
CC
32
1
<CR>
Carriage return (HEX 0D).
<CR>
33
1
<ETX>
End of Text character (HEX 03).
<ETX>
Missing measuring values by partial expansion stage are marked by „F“ as „measuring value error“.
Extension of telegram possible to include date and time; s. section 9, Command DT.
