Protocol Description - ABB A43 User Manual

Communication with M-Bus

10.2 Protocol Description

General 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.
Communication The following quantities can be read by sending a REQ_UD2 to the meter
objects
Register
Active import energy, total
Active import energy, tariff 1
Active import energy, tariff 2
Active import energy, tariff 3
Active import energy, tariff 4
Reactive import energy, total
Reactive import energy, tariff 1
Reactive import energy, tariff 2
Reactive import energy, tariff 3
Reactive import energy, tariff 4
Active export energy, total
Active export energy, tariff 1
Active export energy, tariff 2
Active export energy, tariff 3
Active export energy, tariff 4
Reactive export energy, total
Reactive export energy, tariff 1
Reactive export energy, tariff 2
Reactive export energy, tariff 3
Reactive export energy, tariff 4
CT Ratio primary current
CT Ratio secondary current
VT Ratio primary voltage
VT Ratio secondary voltage
Outputs
2CMC48001M0201
Revision: C
Communication objects
Total cumulative active imported energy
Cumulative active imported energy tariff 1
Cumulative active imported energy tariff 2
Cumulative active imported energy tariff 3
Cumulative active imported energy tariff 4
Total cumulative reactive imported energy
Cumulative reactive imported energy tariff 1
Cumulative reactive imported energy tariff 2
Cumulative reactive imported energy tariff 3
Cumulative reactive imported energy tariff 4
Total cumulative active exported energy
Cumulative active exported energy tariff 1
Cumulative active exported energy tariff 2
Cumulative active exported energy tariff 3
Cumulative active exported energy tariff 4
Total cumulative reactive exported energy
Cumulative reactive exported energy tariff 1
Cumulative reactive exported energy tariff 2
Cumulative reactive exported energy tariff 3
Cumulative reactive exported energy tariff 4
Current transformer ratio primary current
Current transformer ratio secondary current
Voltage transformer ratio primary voltage
Voltage transformer ratio secondary voltage
Read and set status of outputs
175 A43/A44
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