Relay RelAir R2M HOME User Manual page 10

a) Empty telegram
The gateway returns a telegram without data records if, after registering in the whitelist, no
telegram has been received from the registered meter:
Byte No. Name
1 Start
2 L-Field
3 L-Field
4 Start
5 C-Field
6 A-Field
7 CI-Field
8 ID-Field
9 ID-Field
10 ID-Field
11 ID-Field
12 Manufacturer Manufacturer code LSB (Code = REL)
13 Manufacturer Manufacturer code MSB
14 Version
15 Type
16 Acc.
17 State
18 Config.
19 Config.
20 Checksum
21 Stop
Telegram – M-Bus empty telegram
User Manual RelAir R2M · 07/2018 · VERSION 1.1
RSP_UD: M-Bus empty telegram
Content
Start-Byte
Telegram length
Telegram length
Start-Byte
SND_UD
Primary address (meter)
72h (long Header)
Identification number LSB
Identification number
Identification number (meter ID)
Identification number MSB
Version
Device type
Access number
M-Bus State (e.g. error, alarm)
Configuration field (e.g. encryption)
Configuration field (e.g. encryption)
Stop-Byte
RELAIR R2M
Example
Bytes [hex]
68h
0Fh
0Fh
68h
08h
00h
72h
00h
11h
22h
33h
ACh
48h
B8h
07h
01h
00h
00h
00h
94h
16h
10