Connect Rayleigh Instruments 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 Rayleigh Instruments modbus logging and log.
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Rayleigh Instruments (RI-F300,RI-F400) - MODBUS Registers Map
Connection and addressing notes
- Protocol
- Modbus
- Register addressing
- input registers 30000-30xxx with hex addresses
- Data format
- 2 registers per parameter (float)
Registers in the map: 82 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 4 (input registers). byte order big-endian. data types: single, string(32).
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 684 | Serial no. | | string(32) | |
| 0 | Voltage v1n | V | single | |
| 2 | Voltage v2n | V | single | |
| 4 | Voltage v3n | V | single | |
| 6 | Average voltage ln | V | single | |
| 8 | Voltage V12 | V | single | |
| 10 | Voltage V23 | V | single | |
| 12 | Voltage V31 | V | single | |
| 14 | Average voltage ll | V | single | |
| 16 | Current I1 | A | single | |
| 18 | Current I2 | A | single | |
| 20 | Current I3 | A | single | |
| 22 | Average current | A | single | |
| 24 | kW1 | | single | |
| 26 | kW2 | | single | |
| 28 | kW3 | | single | |
| 30 | Kva1 | | single | |
| 32 | Kva2 | | single | |
| 34 | Kva3 | | single | |
| 36 | Kvar1 | | single | |
| 38 | Kvar2 | | single | |
| 40 | Kvar3 | | single | |
| 42 | Total | kW | single | |
| 44 | Total | kVA | single | |
| 46 | Total | kvar | single | |
| 48 | Pf 1 | | single | |
| 50 | Pf 2 | | single | |
| 52 | P f3 | | single | |
| 54 | Average pf | | single | |
| 56 | Frequency | Hz | single | |
| 58 | Total net | kWh | single | |
| 60 | Total net | kVAh | single | |
| 62 | Total net | kvarh | single | |
| 64 | Kw max active power | | single | |
| 66 | Kw min active power | | single | |
| 68 | Kvar max reactive power | | single | |
| 70 | Kvar min reactive power | | single | |
| 72 | Kva max apparent power | | single | |
| 74 | Max I1 demand | | single | |
| 76 | Max I2 demand | | single | |
| 78 | Max I3 demand | | single | |
| 80 | Max avg demand | | single | |
| 82 | Run hour | | single | |
| 84 | Kwh1 (imp) | | single | |
| 86 | Kwh2 (imp) | | single | |
| 88 | Kwh3 (imp) | | single | |
| 90 | Kwh1 (exp) | | single | |
| 92 | Kwh2 (exp) | | single | |
| 94 | Kwh3 (exp) | | single | |
| 96 | Total kwh (imp) | kWh | single | |
This is not the complete map: 50 of 82 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.
Rayleigh Instruments (RI-F500) - MODBUS Registers Map
Connection and addressing notes
- Byte order
- big endian (low byte after high byte) for 32-bit IEEE 754 float data and 16/32-bit two's complement integers
Registers in the map: 117 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 4 (input registers). byte order big-endian. data types: single.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 6 | V1 | | single | |
| 8 | V2 | V | single | |
| 10 | V3 | | single | |
| 12 | V12 | | single | |
| 14 | V23 | | single | |
| 16 | V31 | | single | |
| 18 | I1 | | single | |
| 20 | 12 | A | single | |
| 22 | 13 | A | single | |
| 24 | In | A | single | |
| 26 | P1 | kW | single | |
| 28 | P2 | kW | single | |
| 30 | P3 | kW | single | |
| 32 | P | kW | single | |
| 34 | Q1 | kvar | single | |
| 36 | Q2 | kvar | single | |
| 38 | Q3 | kvar | single | |
| 40 | Q | kvar | single | |
| 42 | S1 | kVA | single | |
| 44 | S2 | kVA | single | |
| 46 | S3 | kVA | single | |
| 48 | S | kVA | single | |
| 50 | PF1 | | single | |
| 52 | PF2 | | single | |
| 54 | PF3 | | single | |
| 56 | PF | | single | |
| 58 | F | Hz | single | |
| 60 | Import active energy | kWh | single | |
| 62 | Export active energy | kWh | single | |
| 64 | Import reactive energy | kvarh | single | |
| 66 | Export reactive energy | kvarh | single | |
| 68 | Apparent energy | kVA | single | |
| 70 | Q1 reactive energy EQL+ | kvarh | single | |
| 72 | Q2 reactive energy EQC+ | kvarh | single | |
| 74 | Q3 reactive energy EQL- | kvarh | single | |
| 76 | Q4 reactive energy EQC - | kvarh | single | |
| 78 | Fundamenta import active energy | kWh | single | |
| 80 | Fundamenta export active energy | kWh | single | |
| 82 | Fundamenta import reactive energy | kvarh | single | |
| 84 | Fundamenta export reactive energy | kvarh | single | |
| 86 | L1 import active energy | kWh | single | |
| 88 | L2 import active energy | kWh | single | |
| 90 | L3 import active energy | kWh | single | |
| 92 | L1 export active energy | kWh | single | |
| 94 | L2 export active energy | kWh | single | |
| 96 | L3 export active energy | kWh | single | |
| 98 | L1 import reactive energy | kvarh | single | |
| 100 | L2 import reactive energy | kvarh | single | |
| 102 | L3 import reactive energy | kvarh | single | |
| 104 | L1 export reactive energy | kvarh | single | |
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.
Related MODBUS registers maps
MODBUS Maps Index
Rayleigh Instruments (RI-F220)
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SATEC Powermeters
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.
