CMi4160
– LoRaWAN
®
Module
11
02/2021
Figure 4: CMi4160 M-Bus message structure
Field
Size
Description
Message
format
identifier
1 byte
0x1E = Standard
0x1F = Compact
0x20 = JSON
0x21 = Scheduled – Daily redundant
0x22 = Scheduled - Extended
0x23 = Combined heat/cooling
Table 4: CMi4160 message formats
6.7.2
STRUCTURE AND PAYLOAD
In this section, a detailed description of the structure and payload for each message format is
presented.
Standard
Figure 5 illustrates the structure of message format
Standard
. For a detailed description of the payload,
see Table 5.
Figure 5: Structure, message format Standard
DIB
Field
Size
Data type
Description
0
Message
format
identifier
1 byte
-
0x1E (Standard)
1
Energy
6-7 bytes INT32
Energy consumption (Wh, J, Cal)
0403xxxxxxxx = xxxxxxxx Wh
0404xxxxxxxx = xxxxxxxx * 10 Wh
0405xxxxxxxx = xxxxxxxx * 100 Wh
0406xxxxxxxx = xxxxxxxx kWh
0407xxxxxxxx = xxxxxxxx * 10 kWh
040Exxxxxxxx = xxxxxxxx MJ
040Fxxxxxxxx = xxxxxxxx * 10 MJ
04FB0Dxxxxxxxx = xxxxxxxx MCal
04FB0Exxxxxxxx = xxxxxxxx * 10 MCal
04FB0Fxxxxxxxx = xxxxxxxx * 100 MCal
