Connect Orno 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 Orno data logger and record.
Do you not know the meter address? Scan the device address online
Orno (OR-WE-514,OR-WE-515) - MODBUS Mapping
Connection and addressing notes
- Protocol
- Modbus RTU
- Default baud rate
- 9600
- Data bits
- 8
- Stop bits
- 1
- Parity
- none
- Frame format
- N81
- Data mode
- 16 decimal word mode
- Function codes
- 03 read
- Byte order
- low address holds the high byte of the data
- Real time data area
- 9000H-9FFFH
- Multi rate data area
- A000H-AFFFH
Registers in the map: 34. function 3 (holding registers). byte order big-endian. data types: dword, integer, word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 305 | Phase voltage V1 | V | word | ×0.01 |
| 306 | Phase voltage V2 | V | word | ×0.01 |
| 307 | Phase voltage V3 | V | word | ×0.01 |
| 314 | Phase current I1 | A | word | ×0.001 |
| 316 | Phase current I2 | A | word | ×0.001 |
| 318 | Phase current I3 | A | word | ×0.001 |
| 321 | Split phase active powerp1 | kW | integer | ×0.001 |
| 323 | Split phase active powerp2 | kW | integer | ×0.001 |
| 325 | Split phase active powerp3 | kW | integer | ×0.001 |
| 327 | System active power psum | kW | integer | ×0.001 |
| 329 | Split phase reactive power Q1 | kvar | integer | ×0.001 |
| 331 | Split phase reactive power Q2 | kvar | integer | ×0.001 |
| 333 | Split phase reactive power Q3 | kvar | integer | ×0.001 |
| 335 | System reactive power qsum | kvar | integer | ×0.001 |
| 337 | Split phase apparent power S1 | kVA | integer | ×0.001 |
| 339 | Split phase apparent power S2 | kVA | integer | ×0.001 |
| 341 | Split phase apparent power S3 | kVA | integer | ×0.001 |
| 343 | System apparent power ssum | kVA | integer | ×0.001 |
| 344 | Split phase power factor PF1 | | integer | ×0.001 |
| 345 | Split phase power factor PF2 | | integer | ×0.001 |
| 346 | Split phase power factor PF3 | | integer | ×0.001 |
| 347 | System power factor pf | | integer | ×0.001 |
| 40960 | Current total active power | kWh | dword | ×0.01 |
| 40962 | Current rate 1 active power | kWh | dword | ×0.01 |
| 40964 | Current rate 2 active power | kWh | dword | ×0.01 |
| 40966 | Current rate 3 active power | kWh | dword | ×0.01 |
| 40968 | Current rate 4 active power | kWh | dword | ×0.01 |
| 40990 | Current total reactive power | kvarh | dword | ×0.01 |
| 40992 | Current rate 1 reactive power | kvarh | dword | ×0.01 |
| 40994 | Current rate 2 reactive power | kvarh | dword | ×0.01 |
| 40996 | Current rate 3 reactive power | kvarh | dword | ×0.01 |
| 40998 | Current rate 4 reactive power | kvarh | dword | ×0.01 |
| 41008 | Last month demand | | dword | ×0.01 |
| 41010 | Last two month demand | | dword | ×0.01 |
Orno (WE-516,WE-517) - Measurement Data
Connection and addressing notes
- Default baud rate
- 9600
- Data bits
- 8
- Stop bits
- 1
- Parity
- none
- Default device address
- 1
- Frame size
- 11 bits (1 start bit, 8 data bits, no parity, 1 stop bit)
- Baud rate options
- 1200, 2400, 4800
- CRC check
- 2 bytes
- Function codes
- 03 read
- Meter ID register
- 0002
- Error response prefix
- 01 (default address)
Registers in the map: 56 (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 |
|---|
| 4 | Software version | | single | |
| 6 | Hardware version | | single | |
| 0 | Serial number | | dword | |
| 2 | Meter ID | | word | |
| 8 | CT rate | | word | |
| 9 | SO output rate | | single | |
| 11 | A3 | | word | |
| 13 | Cycle time | | word | |
| 14 | L1 voltage | | single | |
| 16 | L2 voltage | | single | |
| 18 | L3 voltage | | single | |
| 20 | Grid frequency | | single | |
| 22 | L1 current | | single | |
| 24 | L2 current | | single | |
| 26 | L3 current | | single | |
| 28 | Total active power | | single | |
| 30 | L1 active power | | single | |
| 32 | L2 active power | | single | |
| 34 | L3 active power | | single | |
| 36 | Total reactive power | | single | |
| 38 | L1 reactive power | | single | |
| 40 | L2 reactive power | | single | |
| 42 | L3 reactive power | | single | |
| 44 | Total apparent power | | single | |
| 46 | L1 apparent power | | single | |
| 48 | L2 apparent power | | single | |
| 50 | L3 apparent power | | single | |
| 52 | Total power factor | | single | |
| 54 | Power factor L1 | | single | |
| 56 | Power factor L2 | | single | |
| 58 | Power factor L3 | | single | |
| 66 | Combined code | | word | |
| 256 | Total active energy | | single | |
| 258 | L1 total active energy | | single | |
| 260 | L2 total active energy | | single | |
| 262 | L3 total active energy | | single | |
| 264 | Forward active energy | | single | |
| 266 | L1 forward active energy | | single | |
| 268 | L2 forward active energy | | single | |
| 270 | L3 forward active energy | | single | |
| 272 | Reverse active energy | | single | |
| 274 | L1 reverse active energy | | single | |
| 276 | L2 reverse active energy | | single | |
| 278 | L3 reverse active energy | | single | |
| 280 | Total reactive energy | | single | |
| 282 | L1 reactive energy | | single | |
| 284 | L2 reactive energy | | single | |
| 286 | L3 reactive energy | | single | |
| 288 | Forward reactive energy | | single | |
| 290 | L1 forward reactive energy | | single | |
This is not the complete map: 50 of 56 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.
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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.
