Connect Delta to the computer through a USB-to-serial or RS485 adapter and read its registers in your browser: click "Read register values online" under the model (Chrome or Edge, nothing to install). The tables below list the MODBUS offset, unit, data type and scale of every register shown.
For logging 24/7 into a database, CSV files or Excel, use the Advanced Serial Data Logger (for MODBUS RTU) or Advanced TCP/IP Data Logger (for MODBUS TCP): they poll the complete map of every model on this page and provide continuous Delta modbus logging and log.
Do you not know the meter address? Scan the device address online
Delta (DPM 520) - MODBUS Measurements
Registers in the map: 117 (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, single, word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 256 | Voltage A N | V | single | |
| 258 | Voltage B N | V | single | |
| 260 | Voltage C N | V | single | |
| 262 | Voltage L N avg | V | single | |
| 264 | Voltage A B | V | single | |
| 266 | Voltage B C | V | single | |
| 268 | Voltage C A | V | single | |
| 270 | Voltage L L avg | V | single | |
| 272 | Voltage unbalance A N | % | single | |
| 274 | Voltage unbalance B N | % | single | |
| 276 | Voltage unbalance C N | % | single | |
| 278 | Voltage unbalance L N avg | % | single | |
| 280 | Voltage unbalance A B | % | single | |
| 282 | Voltage unbalance B C | % | single | |
| 284 | Voltage unbalance C A | % | single | |
| 286 | Voltage unbalance L L avg | % | single | |
| 288 | Current A | A | single | |
| 290 | Current B | A | single | |
| 292 | Current C | A | single | |
| 294 | Current avg | A | single | |
| 296 | Current N | A | single | |
| 298 | Current unbalance A | % | single | |
| 300 | Current unbalance B | % | single | |
| 302 | Current unbalance C | % | single | |
| 304 | Current unbalance avg | % | single | |
| 306 | Power factor total | | single | |
| 308 | Power factor A | | single | |
| 310 | Power factor B | | single | |
| 312 | Power factor C | | single | |
| 314 | Displacement power factor total | | single | |
| 316 | Displacement power factor A | | single | |
| 318 | Displacement power factor B | | single | |
| 320 | Displacement power factor C | | single | |
| 322 | Frequency | Hz | single | |
| 324 | Active power total | kW | single | |
| 326 | Active power A | kW | single | |
| 328 | Active power B | kW | single | |
| 330 | Active power C | kW | single | |
| 332 | Reactive power total | kvar | single | |
| 334 | Reactive power A | kvar | single | |
| 336 | Reactive power B | kvar | single | |
| 338 | Reactive power C | kvar | single | |
| 340 | Apparent power total | kVA | single | |
| 342 | Apparent power A | kVA | single | |
| 344 | Apparent power B | kVA | single | |
| 346 | Apparent power C | kVA | single | |
| 348 | Active energy delivered | Wh | dword | |
| 350 | Active energy received | Wh | dword | |
| 352 | Reactive energy delivered | varh | dword | |
| 354 | Reactive energy received | varh | dword | |
This is not the complete map: 50 of 117 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.
Delta (DPM 530) - MODBUS Values
Registers in the map: 283 (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: single, word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 256 | Voltage A N | V | single | |
| 258 | Voltage B N | V | single | |
| 260 | Voltage C N | V | single | |
| 262 | Voltage L N avg | V | single | |
| 264 | Voltage A B | V | single | |
| 266 | Voltage B C | V | single | |
| 268 | Voltage C A | V | single | |
| 270 | Voltage L L avg | V | single | |
| 272 | Voltage unbalance A N | % | single | |
| 274 | Voltage unbalance B N | % | single | |
| 276 | Voltage unbalance C N | % | single | |
| 278 | Voltage unbalance L N avg | % | single | |
| 280 | Voltage unbalance A B | % | single | |
| 282 | Voltage unbalance B C | % | single | |
| 284 | Voltage unbalance C A | % | single | |
| 286 | Voltage unbalance L L avg | % | single | |
| 288 | Current A | A | single | |
| 290 | Current B | A | single | |
| 292 | Current C | A | single | |
| 294 | Current avg | A | single | |
| 296 | Current N | A | single | |
| 298 | Current unbalance A | % | single | |
| 300 | Current unbalance B | % | single | |
| 302 | Current unbalance C | % | single | |
| 304 | Current unbalance avg | % | single | |
| 306 | Power factor total | | single | |
| 308 | Power factor A | | single | |
| 310 | Power factor B | | single | |
| 312 | Power factor C | | single | |
| 314 | Displacement power factor total | | single | |
| 316 | Displacement power factor A | | single | |
| 318 | Displacement power factor B | | single | |
| 320 | Displacement power factor C | | single | |
| 322 | Frequency | Hz | single | |
| 324 | Active power total | kW | single | |
| 326 | Active power A | kW | single | |
| 328 | Active power B | kW | single | |
| 330 | Active power C | kW | single | |
| 332 | Reactive power total | kvar | single | |
| 334 | Reactive power A | kvar | single | |
| 336 | Reactive power B | kvar | single | |
| 338 | Reactive power C | kvar | single | |
| 340 | Apparent power total | kVA | single | |
| 342 | Apparent power A | kVA | single | |
| 344 | Apparent power B | kVA | single | |
| 346 | Apparent power C | kVA | single | |
| 348 | Active energy delivered | Wh | single | |
| 350 | Active energy received | Wh | single | |
| 352 | Reactive energy delivered | varh | single | |
| 354 | Reactive energy received | varh | single | |
This is not the complete map: 50 of 283 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.
Related MODBUS registers maps
MODBUS Maps Index
Delab (PQM)
Crompton (Integra 1200)
Dent Instruments (PowerScount 3037)
EDME (Genius Mk6)
Note: Products and companies mentioned here are used only for definition and identification purposes and can be trademarks and/or registered trademarks of the respective companies.
