Connection and addressing notes
- Function codes
- 04H read input registers
- Data format
- 32-bit IEEE 754 float (4 bytes)
- Register addressing
- high byte and low byte hex values (0x0000, 0x0006, 0x000C ...)
Registers in the map: 27. function 4 (input registers). byte order big-endian. data types: single.
| MODBUS offset | Description | Units | Data type | Scale |
|---|---|---|---|---|
| 0 | Voltage | V | single | |
| 6 | Current | A | single | |
| 12 | Active power | W | single | |
| 18 | Reactive power | var | single | |
| 24 | Apparent power | VA | single | |
| 30 | Power factor | single | ||
| 36 | Phase angle | deg | single | |
| 48 | Frequency of supply voltages | Hz | single | |
| 78 | Nature of load (Resistive=1, inductive=2, capacitive=3) | single | ||
| 140 | Active powerdemand | W | single | |
| 142 | Reactive power demand | var | single | |
| 144 | Apparent power demand | VA | single | |
| 146 | Current demand | A | single | |
| 154 | Import active power demand | W | single | |
| 156 | Export active power demand | W | single | |
| 162 | Maximum active power demand | W | single | |
| 164 | Maximum reactive power demand | var | single | |
| 166 | Maximum apparent power demand | VA | single | |
| 168 | Maximum current demand | A | single | |
| 176 | Maximum import active power demand | W | single | |
| 178 | Maximum export active power demand | W | single | |
| 1280 | Total import active energy | kWh | single | |
| 1282 | Total export active energy | kWh | single | |
| 1284 | Total active energy | kWh | single | |
| 1288 | Total import reactive energy | kvarh | single | |
| 1290 | Total export reactive energy | kvarh | single | |
| 1292 | Total reactive energy | kvarh | single |