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Falcon MJ M-Bus Operating instructions
05/18 Generation 1.2
Page 34 of 38
179
DR26
Value LSB
xxh
180
DR26
Value
xxh
181
DR26
Value
xxh
182
DR26
Value MSB
xxh
183
DR27
DIF (8 digit BCD + Ext.)
8Ch
184
DR27
DIFE (Storagenumber 20)
0Ah
185
DR27
VIF (Volume l)
13h
186
DR27
Value LSB
xxh
187
DR27
Value
xxh
188
DR27
Value
xxh
189
DR27
Value MSB
xxh
190
DR28
DIF (Manufacturersp Frame)
1Fh
191
DR28
PBIT
xxh
192
Checksum
xxh
D
LL
193
Stop
Stop byte
16h
Frame 2:
RSP-UD (M-Bus)
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
DR29
DIF (16 bit Int. + max Val. + Extension)
92h
Ap
p
li
ca
tio
n
La
ye
r
(A
PL
)