CMi6110
User’s Manual English
CMi6110 User’s Manual English
page | 24 (42)
[2022-10]
v1.3
Field
Description
Fw temp
Forward temperature (°C)
Mapped to OBIS 6.29
Rt temp
Return temperature (°C)
Mapped to OBIS 6.28
Meter ID
Identification number of the meter in which the module is installed
Error flags
Error and warning flags
16-bit hexadecimal value
Meter
date/time
Date/time of the meter at time of readout
Table 4: Meter registers, standard message
Field
Description
Tariff 1
Energy consumption (kWh)
Mapped to OBIS 6.8.1
Tariff register 1
or
cooling energy (in combined heat/cooling meters)
Tariff 2
Energy consumption (kWh)
Mapped to OBIS 6.8.2
Tariff register 2
or
heating energy (in combined heat/cooling meters)
Tariff 3
Energy consumption (kWh)
Mapped to OBIS 6.8.3
Tariff register 3
Missing time
Accumulated downtime.
Table 5: Meter registers, extended message
7.4.2 Message encoding
CMi6110 has three options when it comes to message encoding. The user can either use M-Bus, JSON
or SenML/CBOR for encoding. These three options are described in detail in the upcoming sections.
7.4.2.1 M-Bus
If using M-Bus as message encoding technique, data will be divided into Data Information Blocks (DIB)
that include Data information field (DIF code), Value information field (VIF code) and a data field (DATA)
where the actual payload is stored (illustrated in Figure 7).
Figure 7: DIB structure
