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Falcon MJ M-Bus Operating instructions
05/18 Generation 1.2
Page 28 of 38
4.2.3
Short
– telegram (for Modules with Firmware 1.0.5 or newer)
OMS M-Bus frame
Water meter
example
Laye
r
Byte No
Field Name
Content
Bytes [hex]
plain
1
Start
Start byte
68h
D
ata
Lin
k
Lay
er
(D
LL
)
2
L Field
Length of data (xx bytes)
xxh
3
L Field
Length of data (xx bytes)
xxh
4
Start
Start byte
68h
5
C Field
Respond user data
08h
6
A-Field
Secondary addressing mode
FDh
7
CI Field
72h (long header)
72h
Tran
sport
L
ay
er
(TP
L)
8
Ident.Nr.
Ident No LSB (BCD)
78h
9
Ident.Nr.
Ident No (BCD)
56h
10
Ident.Nr.
Ident No (BCD) (=12345678)
34h
11
Ident.Nr.
Ident No MSB (BCD)
12h
12
Manufr
Manufacturer code
92h
13
Manufr
Manufacturer code
15h
14
Version
Version (or Generation number)
xxh
15
Device type
Device type (Medium=Water)
07h
16
Access No.
Access number of Meter
2Ah
17
Status
M-Bus state
00h
18
Config Field
no Encryption
00h
19
Config Field
no Encryption
00h
20
DR1
DIF (8 digit BCD)
0Ch
Ap
p
licatio
n
L
ay
er
(
AP
L)
21
DR1
VIF (Volume l)
13h
22
DR1
Value LSB
73h
23
DR1
Value
42h
24
DR1
Value ( = 28504,273 m³)
50h
25
DR1
Value MSB
28h
26
DR2
DIF (Time at readout; Type F)
04h
27
DR2
VIF (Date, Time)
6Dh
28
DR2
Value LSB
32h
29
DR2
Value
37h
30
DR2
Value ( 31.05.2008 23:50 )
1Fh
31
DR2
Value MSB
15h
32
DR3
DIF (Date Stor. 1;Type G)
42h
33
DR3
VIF (Date)
6Ch
34
DR3
Value
xxh
35
DR3
Value
xxh
36
DR4
DIF (8 digit BCD Stor. 1)
4Ch
37
DR4
VIF (Volume l)
13h
38
DR4
Value LSB
78h
39
DR4
Value
56h