Connection and addressing notes
- Protocol
- Modbus
- Interface
- serial
- Function codes
- 03 read holding registers, 04 read input registers
- Register addressing
- hexadecimal with an H suffix, for example 0002H
- Data format
- 32-bit values occupy 2 words
- Register clone
- one register is documented as a clone of Modbus function 17
Registers in the map: 157 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: dword, integer.
| MODBUS offset | Description | Units | Data type | Scale |
|---|---|---|---|---|
| 2 | L1 phase voltage - mains | V | dword | ×0.01 |
| 4 | L2 phase voltage - mains | V | dword | ×0.01 |
| 6 | L3 phase voltage - mains | V | dword | ×0.01 |
| 8 | L1 phase voltage - generator | V | dword | ×0.01 |
| 10 | L2 phase voltage - generator | V | dword | ×0.01 |
| 12 | L3 phase voltage - generator | V | dword | ×0.01 |
| 14 | L1 current | A | dword | ×0.0001 |
| 16 | L2 current | A | dword | ×0.0001 |
| 18 | L3 current | A | dword | ×0.0001 |
| 20 | Neutral current | A | dword | ×0.0001 |
| 22 | L1-L2 voltage - mains | V | dword | ×0.01 |
| 24 | L2-L3 voltage - mains | V | dword | ×0.01 |
| 26 | L3-L1 voltage - mains | V | dword | ×0.01 |
| 28 | L1-L2 voltage - generator | V | dword | ×0.01 |
| 30 | L2-L3 voltage - generator | V | dword | ×0.01 |
| 32 | L3-L1 voltage - generator | V | dword | ×0.01 |
| 34 | L1 active power - mains | W | integer | ×0.01 |
| 36 | L2 active power - mains | W | integer | ×0.01 |
| 38 | L3 active power - mains | W | integer | ×0.01 |
| 40 | L1 active power - generator | W | integer | ×0.01 |
| 42 | L2 active power - generator | W | integer | ×0.01 |
| 44 | L3 active power - generator | W | integer | ×0.01 |
| 46 | L1 reactive power - mains | var | integer | ×0.01 |
| 48 | L2 reactive power - mains | var | integer | ×0.01 |
| 50 | L3 reactive power - mains | var | integer | ×0.01 |
| 52 | L1 reactive power - generator | var | integer | ×0.01 |
| 54 | L2 reactive power - generator | var | integer | ×0.01 |
| 56 | L3 reactive power - generator | var | integer | ×0.01 |
| 58 | L1 apparent power - mains | VA | dword | ×0.01 |
| 60 | L2 apparent power - mains | VA | dword | ×0.01 |
| 62 | L3 apparent power - mains | VA | dword | ×0.01 |
| 64 | L1 apparent power - generator | VA | dword | ×0.01 |
| 66 | L2 apparent power - generator | VA | dword | ×0.01 |
| 68 | L3 apparent power - generator | VA | dword | ×0.01 |
| 70 | L1 power factor - mains | integer | ×0.0001 | |
| 72 | L2 power factor - mains | integer | ×0.0001 | |
| 74 | L3 power factor - mains | integer | ×0.0001 | |
| 76 | L1 power factor - generator | integer | ×0.0001 | |
| 78 | L2 power factor - generator | integer | ×0.0001 | |
| 80 | L3 power factor - generator | integer | ×0.0001 | |
| 82 | Eqv. phase voltage - mains | V | dword | ×0.01 |
| 84 | Eqv. phase-to-phase voltage - mains | V | dword | ×0.01 |
| 86 | Frequency - mains | Hz | dword | ×0.001 |
| 88 | Eqv. phase voltage - generator | V | dword | ×0.01 |
| 90 | Eqv. phase-to-phase voltage - generator | V | dword | ×0.01 |
| 92 | Frequency - generator | Hz | dword | ×0.001 |
| 94 | Eqv power factor - mains | integer | ×0.0001 | |
| 100 | Eqv power factor - generator | integer | ×0.0001 | |
| 106 | Eqv. active power - mains | W | integer | ×0.01 |
| 108 | Eqv. reactive power - mains | var | integer | ×0.01 |
This is not the complete map: 50 of 157 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.