Connection and addressing notes
- Protocol
- Modbus
- Default device address
- 1
- Function codes
- 03 read holding registers
- Data format
- two 16-bit registers combined into a signed 32-bit integer
- Word order
- low word at the lower address
- Energy format
- four registers, kWh in the first pair, Wh in the second
- Polling block 1
- 258, 16 registers, every 1 second
- Polling block 2
- 286, 42 registers, every 1 second
- Polling block 3
- 1024, 16 registers, every 10 seconds
Registers in the map: 32. function 3 (holding registers). byte order big-endian. data types: dword.
| MODBUS offset | Description | Units | Data type | Scale |
|---|---|---|---|---|
| 258 | Voltage | V | dword | ×0.1 |
| 260 | Voltage Phase Phase | V | dword | ×0.1 |
| 262 | Active power (sum) | W | dword | ×0.1 |
| 264 | Apparent power (sum) | VA | dword | ×0.1 |
| 266 | Reactive power (sum) | var | dword | ×0.1 |
| 268 | Power factor | dword | ×0.001 | |
| 272 | Frequency | Hz | dword | ×0.1 |
| 286 | Phase A: AC voltage phase 1-2 | V | dword | ×0.1 |
| 288 | Phase A: AC voltage | V | dword | ×0.1 |
| 290 | Phase A: AC current | A | dword | ×0.001 |
| 292 | Phase A: Active power | W | dword | ×0.1 |
| 294 | Phase A: Apparent power | VA | dword | ×0.1 |
| 296 | Phase A: Reactive power | var | dword | ×0.1 |
| 298 | Phase A: Power factor | dword | ×0.001 | |
| 300 | Phase B: AC voltage phase 2-3 | V | dword | ×0.1 |
| 302 | Phase B: AC voltage | V | dword | ×0.1 |
| 304 | Phase B: AC current | A | dword | ×0.001 |
| 306 | Phase B: Active power | W | dword | ×0.1 |
| 308 | Phase B: Apparent power | VA | dword | ×0.1 |
| 310 | Phase B: Reactive power | var | dword | ×0.1 |
| 312 | Phase B: Power factor | dword | ×0.001 | |
| 314 | Phase C: AC voltage phase 3-1 | V | dword | ×0.1 |
| 316 | Phase C: AC voltage | V | dword | ×0.1 |
| 318 | Phase C: AC current | A | dword | ×0.001 |
| 320 | Phase C: Active power | W | dword | ×0.1 |
| 322 | Phase C: Apparent power | VA | dword | ×0.1 |
| 324 | Phase C: Reactive power | var | dword | ×0.1 |
| 326 | Phase C: Power factor | dword | ×0.001 | |
| 1024 | Active energy consumed | kWh | dword | |
| 1028 | Reactive energy consumed | kvarh | dword | |
| 1032 | Active energy produced | kWh | dword | |
| 1036 | Reactive energy produced | kvarh | dword |