ABB A43

Communication with M-Bus
2CMC48001M0201 175 A43/A44
Revision: C User Manual
10.2 Protocol Description
General
Communication
objects
The communication protocol described in this chapter meets the requirements
of EN 13757-2 and EN 13757-3.
The communication can be divided in two parts. One part is reading data from
the meter and the other part is sending data to it.
The data readout procedure starts when the master sends a REQ_UD2 telegram
to the meter. The meter responds with a RSP_UD telegram. A typical readout is
a multi-telegram readout.
Some data in the meter can only be read by first sending a SND_UD followed by
REQ_UD2. This is true for load profiles, demand, log files and normally for har-
monics.
Using SND_UD telegrams data can be sent to the meter.
The following quantities can be read by sending a REQ_UD2 to the meter
Register
Communication objects
Active import energy, total
Total cumulative active imported energy
Active import energy, tariff 1
Cumulative active imported energy tariff 1
Active import energy, tariff 2
Cumulative active imported energy tariff 2
Active import energy, tariff 3
Cumulative active imported energy tariff 3
Active import energy, tariff 4
Cumulative active imported energy tariff 4
Reactive import energy, total
Total cumulative reactive imported energy
Reactive import energy, tariff 1
Cumulative reactive imported energy tariff 1
Reactive import energy, tariff 2
Cumulative reactive imported energy tariff 2
Reactive import energy, tariff 3
Cumulative reactive imported energy tariff 3
Reactive import energy, tariff 4
Cumulative reactive imported energy tariff 4
Active export energy, total
Total cumulative active exported energy
Active export energy, tariff 1
Cumulative active exported energy tariff 1
Active export energy, tariff 2
Cumulative active exported energy tariff 2
Active export energy, tariff 3
Cumulative active exported energy tariff 3
Active export energy, tariff 4
Cumulative active exported energy tariff 4
Reactive export energy, total
Total cumulative reactive exported energy
Reactive export energy, tariff 1
Cumulative reactive exported energy tariff 1
Reactive export energy, tariff 2
Cumulative reactive exported energy tariff 2
Reactive export energy, tariff 3
Cumulative reactive exported energy tariff 3
Reactive export energy, tariff 4
Cumulative reactive exported energy tariff 4
CT Ratio primary current
Current transformer ratio primary current
CT Ratio secondary current
Current transformer ratio secondary current
VT Ratio primary voltage
Voltage transformer ratio primary voltage
VT Ratio secondary voltage
Voltage transformer ratio secondary voltage
Outputs
Read and set status of outputs