Communication Examples; Reading Energy Values - ABB A43 User Manual

Communication with Modbus

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

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
Reading answer
05 03 48
00 00 00 00 00 0D 12 90
00 00 00 00 00 03 12 09
00 00 00 00 00 0A 00 86
00 00 00 00 00 04 17 05
00 00 00 00 00 01 2B 18
00 00 00 00 00 02 EB ED ;Total reactive net energy, 000000000002EBEDhex -> 1914.69 kvarh
00 00 00 00 00 0E A7 FE
00 00 00 00 00 03 DB 92
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
Reading answer
05 03 60
00 00 00 00 00 04 5F 06
00 00 00 00 00 00 D3 EA
00 00 00 00 00 07 0B 20
00 00 00 00 00 00 D4 80
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
00 00 00 00 00 01 AD F6
00 00 00 00 00 00 F1 FE
00 00 00 00 00 00 61 44
E5 C5
Sending Read Request
05 03 51 B0 00 30 55 41 7D
Reading answer
05 03 60
00 00 00 00 00 00 33 53
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
00 00 00 00 00 00 B0 2C
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
00 00 00 00 00 00 1C 20
00 00 00 00 00 00 28 0A
00 00 00 00 00 00 42 9A
E8 41
Sending Read Request
A43/A44
User Manual
;05=Modbus address, 03=Read holding register, 50 00=Address 5000hex, 00 24hex=36
Modbus words=72 bytes
;05=Modbus address, 03=read holding register, 48hex=72 bytes
;Total active import energy, 00000000000D1290hex -> 8567.20 kWh
;Total active export energy, 0000000000031209hex -> 2012.25 kWh
;Total active net energy, 00000000000A0086hex -> 6554.94 kWh
;Total reactive import energy, 0000000000041705hex -> 2680.37 kvarh
;Total reactive export energy, 0000000000012B18hex -> 765.68 kvarh
;Total apparent import energy, 00000000000EA7FEhex -> 9605.10 kVAh
;Total apparent export energy, 000000000003DB92hex -> 2528.18 kVAh
;05=Modbus address, 03=Read holding register, 51 70=Address 5170hex, 00 30hex=48
Modbus words=96 bytes
;05=Modbus address, 03=read holding register, 60hex=96 bytes
;Tariff 1 active import energy, 0000000000045F06hex -> 2864.70 kWh
;Tariff 2 active import energy, 000000000000D3EA hex -> 542.50 kWh
;Tariff 3 active import energy, 0000000000070B20hex -> 4616.00 kWh
;Tariff 4 active import energy, 000000000000D480hex -> 544.00 kWh
;Tariff 1 active export energy, 00000000000010D1 hex -> 43.05 kWh
;Tariff 2 active export energy, 000000000001ADF6 hex -> 1100.70 kWh
;Tariff 3 active export energy, 000000000000F1FE hex -> 619.50 kWh
;Tariff 4 active export energy, 0000000000006144hex -> 249.00 kWh
;05=Modbus address, 03=Read holding register, 51 B0=Address 51B0hex, 00 30hex=48
Modbus words=96 bytes
;05=Modbus address, 03=read holding register, 60hex=96 bytes
;Tariff 1 reactive import energy, 0000000000003353 hex -> 131.39 kvarh
;Tariff 3 reactive import energy, 0000000000027614hex -> 1613.00 kvarh
;Tariff 4 reactive import energy, 000000000000B02Chex -> 451.00 kvarh
;Tariff 1 reactive export energy, 000000000000 A454hex -> 420.68 kvarh
;Tariff 2 reactive export energy, 0000000000001C20 hex -> 72.00 kvarh
;Tariff 3 reactive export energy, 000000000000280Ahex -> 102.50 kvarh
;Tariff 4 reactive export energy, 000000000000429Ahex -> 170.50 kvarh
168
Mapping Tables .
2CMC48001M0201
Revision: C