51.0077.0004.01 Rev.03
FP wMBusConf - Operating Manual
10 M-bus telegrams for registered meters
Operating Manual
RSP_UD:
Example
Laye
r
Byte no. Name
Contents
Bytes [hex]
DR2
DIF (integer 8Bit)
01h
DR2
VIF (linear extension)
FDh
DR2
VIFE (RSSI / reception level dBm)
71h
DR2
Value (-96dBm)
A0h
DR3
DIF (integer 16Bit)
02h
DR3
VIF (age / currentness duration)
74h
DR3
LSB value (900s)
84h
DR3
MSB value
03h
Checksum
??h
DL
L
Stop
Stop byte
16h
c)
Decrypted telegram
If a registered meter sends an unencrypted telegram or the correct AES128 key is stored, the
data records contained in the telegram are simply copied into the telegram. However, all
clearly identifiable idle fillers (2Fh) are removed. 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 (from the C-field checksum)
1Dh
3
L-field
Telegram length (from the C-field checksum)
1Dh
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 (BCD 8 characters)
0Ch
Appl
ic
at
io
n
La
ye
r (
APL
)
21
DR1
VIF (Volume [l])
13h
22
DR1
LSB value
15h
23
DR1
Value
08h
24
DR1
Value (00000815 [l])
00h
25
DR1
MSB value
00h
26
DR2
DIF (integer 8Bit)
01h