51.0077.0004.01 Rev.03
FP wMBusConf - Operating Manual
8 M-bus telegrams for registered meters
Operating Manual
3
M-bus telegrams for registered meters
The wMBus adapter simulates all meters registered in the while list. They can either be selected and
read out using their primary address (if assigned using the RelAirConf parameter setting software) or
their secondary address. The wMBus adapter always keeps the last wM-bus telegram received from
the registered meters to hand. If required, the telegram is decrypted and packed in a telegram that
conforms to M-bus.
Example (addressing directly via primary address
0x05
):
REQ_UD2:
10 7B 05 80 16
Note:
If you wish to use primary addressing, you must use the RelAirConf to program a unique address for
each sender.
Example (addressing via secondary address
00h 11h 22h 33h ACh 48h B8h 07h
):
Selection:
68 0B 0B 68 53 FD 52 00 11 22 33 AC 48 B8 07 BB 16
REQ_UD2:
10 7B FD 78 16
Note:
The secondary address is transferred directly from the wireless M-bus telegram that is received.
There are a total of 4 response telegrams that are described on the following pages:
a)
Blank telegram
If no telegram has yet been received from the registered meter after registration in the white
list, the device returns a telegram without data records. The data records with RSSI (DR1) and
age (DR2) are optional and are only transmitted if these options are activated in the wMBus
adapter (possible as of firmware V1.5.0).
RSP_UD: M-bus blank telegram
Example
La
ye
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
17h
3
L-field
Telegram length
17h
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
