51.0077.0004.01 Rev.03
FP wMBusConf - Operating Manual
9
Operating Manual
M-bus telegrams for registered meters
RSP_UD: M-bus blank telegram
Example
La
ye
r
Byte no. Name
Contents
Bytes [hex]
19
Config.
Configuration field (e.g. encryption)
00h
20
DR1
DIF (integer 8Bit)
01h
Appl
ic
at
io
n
La
ye
r (
APL
)
21
DR1
VIF (linear extension)
FDh
22
DR1
VIFE (RSSI / reception level dBm)
71h
23
DR1
Value
00h
24
DR2
DIF (integer 16Bit)
02h
25
DR2
VIF (age / currentness duration)
74h
26
DR2
LSB value (900s)
84h
27
DR2
MSB value
03h
Checksum
??h
DL
L
Stop
Stop byte
16h
b)
Telegram with wM-bus container
If the telegram cannot be decrypted despite a registered or due to a missing AES key, the
telegram is packed into a wM-bus container data record and made available. The data records
with RSSI (DR2) and age (DR3) are optional and are only transmitted if these options are
activated in the wMBus adapter (possible as of firmware V1.5.0).
RSP_UD:
Example
Laye
r
Byte no. Name
Contents
Bytes [hex]
1
Start
Start byte
68h
Da
ta
Lin
k
La
ye
r (D
LL)
2
L-field
Telegram length
??h
3
L-field
Telegram length
??h
4
Start
Start byte
68h
5
C-field
SND_UD
08h
6
A-field
Primary address (meter)
00h
7
CI-field
72h (long header)
72h
Tr
an
sp
ort
L
ay
er (
TP
L)
8
ID-field
LSB identification number
00h
9
ID-field
Identification number
11h
10
ID-field
Identification number (meter ID)
22h
11
ID-field
MSB identification number
33h
12
Manuf.
LSB manufacturer code (code = REL)
ACh
13
Manuf.
MSB manufacturer code
48h
14
Version
Version
B8h
15
Type
Device type
07h
16
Acc
Access number
01h
17
Status
M-bus status (e.g. error, alarm)
00h
18
Config.
Configuration field (e.g. encryption)
00h
19
Config.
Configuration field (e.g. encryption)
00h
20
DR1
DIF (variable length)
0Dh
Appl
ic
at
io
n
La
ye
r (
APL
)
21
DR1
VIF (linear extension)
FDh
22
DR1
VIFE (Wireless M-bus-protocol data container)
3Bh
23
DR1
LVAR
32h
24
DR1
Telegram contents as of the L-field
8Ch
…
…
…
DR1
Last byte in the telegram
06
