ABB A43 User Manual

Communication with Modbus
A43/A44 168 2CMC48001M0201
User Manual Revision: C
9.11 Communication examples
This section contains a number of Modbus communication examples with commented byte data sent and
received. Regarding Modbus addresses, data resolution, size, unit and type see section 9.4 Mapping Tables.
9.11.1 Reading energy values
Below is a readout example of energy register values with commented byte data sent and received in
hexadecimal format. The readout is divided into four readings. The first three because the registers are
located at different address areas and the last readings because the area exceeds the maximum number of
Modbus addresses that can be read out (125) with the read holding register command (03).
Sending Read Request
05 03 50 00 00 24 55 55 ;05=Modbus address, 03=Read holding register, 50 00=Address 5000hex, 00 24hex=36
Modbus words=72 bytes
Reading answer
05 03 48 ;05=Modbus address, 03=read holding register, 48hex=72 bytes
00 00 00 00 00 0D 12 90 ;Total active import energy, 00000000000D1290hex -> 8567.20 kWh
00 00 00 00 00 03 12 09 ;Total active export energy, 0000000000031209hex -> 2012.25 kWh
00 00 00 00 00 0A 00 86 ;Total active net energy, 00000000000A0086hex -> 6554.94 kWh
00 00 00 00 00 04 17 05 ;Total reactive import energy, 0000000000041705hex -> 2680.37 kvarh
00 00 00 00 00 01 2B 18 ;Total reactive export energy, 0000000000012B18hex -> 765.68 kvarh
00 00 00 00 00 02 EB ED ;Total reactive net energy, 000000000002EBEDhex -> 1914.69 kvarh
00 00 00 00 00 0E A7 FE ;Total apparent import energy, 00000000000EA7FEhex -> 9605.10 kVAh
00 00 00 00 00 03 DB 92 ;Total apparent export energy, 000000000003DB92hex -> 2528.18 kVAh
00 00 00 00 00 0A CC 6C ;Total apparent net energy, 00000000000ACC6Chex -> 7076.92 kVAh
2F 9F
Sending Read Request
05 03 51 70 00 30 55 7D ;05=Modbus address, 03=Read holding register, 51 70=Address 5170hex, 00 30hex=48
Modbus words=96 bytes
Reading answer
05 03 60 ;05=Modbus address, 03=read holding register, 60hex=96 bytes
00 00 00 00 00 04 5F 06 ;Tariff 1 active import energy, 0000000000045F06hex -> 2864.70 kWh
00 00 00 00 00 00 D3 EA ;Tariff 2 active import energy, 000000000000D3EA hex -> 542.50 kWh
00 00 00 00 00 07 0B 20 ;Tariff 3 active import energy, 0000000000070B20hex -> 4616.00 kWh
00 00 00 00 00 00 D4 80 ;Tariff 4 active import energy, 000000000000D480hex -> 544.00 kWh
FF FF FF FF FF FF FF FF ;FF FF FF FF……. means no data available at these addresses
FF FF FF FF FF FF FF FF
FF FF FF FF FF FF FF FF
FF FF FF FF FF FF FF FF
00 00 00 00 00 00 10 D1 ;Tariff 1 active export energy, 00000000000010D1 hex -> 43.05 kWh
00 00 00 00 00 01 AD F6 ;Tariff 2 active export energy, 000000000001ADF6 hex -> 1100.70 kWh
00 00 00 00 00 00 F1 FE ;Tariff 3 active export energy, 000000000000F1FE hex -> 619.50 kWh
00 00 00 00 00 00 61 44 ;Tariff 4 active export energy, 0000000000006144hex -> 249.00 kWh
E5 C5
Sending Read Request
05 03 51 B0 00 30 55 41 7D ;05=Modbus address, 03=Read holding register, 51 B0=Address 51B0hex, 00 30hex=48
Modbus words=96 bytes
Reading answer
05 03 60 ;05=Modbus address, 03=read holding register, 60hex=96 bytes
00 00 00 00 00 00 33 53 ;Tariff 1 reactive import energy, 0000000000003353 hex -> 131.39 kvarh
00 00 00 00 00 00 BD 71 ;Tariff 2 reactive import energy, 000000000000BD71 hex -> 484.97 kvarh
00 00 00 00 00 02 76 14 ;Tariff 3 reactive import energy, 0000000000027614hex -> 1613.00 kvarh
00 00 00 00 00 00 B0 2C ;Tariff 4 reactive import energy, 000000000000B02Chex -> 451.00 kvarh
FF FF FF FF FF FF FF FF ;FF FF FF FF……. means no data available at these addresses
FF FF FF FF FF FF FF FF
FF FF FF FF FF FF FF FF
FF FF FF FF FF FF FF FF
00 00 00 00 00 00 A4 54 ;Tariff 1 reactive export energy, 000000000000 A454hex -> 420.68 kvarh
00 00 00 00 00 00 1C 20 ;Tariff 2 reactive export energy, 0000000000001C20 hex -> 72.00 kvarh
00 00 00 00 00 00 28 0A ;Tariff 3 reactive export energy, 000000000000280Ahex -> 102.50 kvarh
00 00 00 00 00 00 42 9A ;Tariff 4 reactive export energy, 000000000000429Ahex -> 170.50 kvarh
E8 41
Sending Read Request

ABB A43 Specifications

General

Brand	ABB
Model	A43
Category	Measuring Instruments
Language	English