Communication RS485 & Ethernet
42
Revision R09, November 2016
8.3.4
Extended Data Telegram
The extended data telegram consists of 240 Bytes. Semicolon (3B HEX) replaces
space (20 HEX) as delimiter for extended data telegrams. Table 9 shows details
about the telegram structure.
The telegram size is different if the number of
cloud layers “layer” has been changed.
Byte
Value
1
Description
0
<STX>
02 HEX
1
X
2
1
3, 4
TA
5
;
3B HEX
6
8
7
;
3B HEX
8-10
***
Output interval [s]
11
;
3B HEX
12-19
**.**.**
Date (dd.mm.yy)
20
;
3B HEX
21-28
**.**.**
Time; Note modification, as of now (hh:mm:ss)
29
;
3B HEX
30
*
Numbers of layer
31
;
32-36
*****
1
st
Cloud layer (CBH)
37
;
3B HEX
38-42
*****
2
nd
Cloud layer (CBH)
43
;
3B HEX
44-48
*****
3
rd
Cloud layer (CBH)
49
;
3B HEX
50-54
*****
Penetration depth of the laser beam into the 1
st
cloud layer
(CPD), Note: extension to 5 digit
55
;
3B HEX
56-60
*****
Penetration depth of the laser beam into the 2
nd
cloud layer
(CPD), Note: extension to 5 digit
61
;
3B HEX
62-66
*****
Penetration depth of the laser beam into the 3
rd
cloud layer
(CPD), Note: extension to 5 digit
67
;
3B HEX
68-72
*****
Vertical visibility (VOR)
73
;
3B HEX
74-78
*****
Max. detection range (MXD)
79
;
3B HEX
80-83
****
Cloud height-Offset / altitude(m)
84
;
3B HEX
85-86
m
unit of measurement in m or ft
Table 9: Format of extended data telegrams (also refer to Table 10),
1
* = any
character
Summary of Contents for CHM 15k Nimbus
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