Connect Circutor 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 Circutor data logger and record.
Do you not know the meter address? Scan the device address online
Circutor (CVM-96) - Measurement Data
Connection and addressing notes
- Protocol
- Modbus RTU
- Data bits
- 8
- Error check
- CRC
- Character format
- each 8-bit byte carries two hex characters
- Function codes
- 01 read relay states, 03 read words, 04 read words, 05 write one relay
- Parameter size
- 32-bit value read as two 16-bit words
Registers in the map: 152 (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.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 0 | Phase_voltage V1 | V | dword | ×0.1 |
| 2 | Current A1 | A | dword | ×0.001 |
| 4 | Active power kW1 | W | dword | |
| 6 | Reactive power kvar1 | var | dword | |
| 8 | Power factor PF1 | | dword | ×0.01 |
| 10 | Phase voltage V2 | V | dword | ×0.1 |
| 12 | Current A2 | A | dword | ×0.001 |
| 14 | Active power kW2 | W | dword | |
| 16 | Reactive power kvar3 | var | dword | |
| 18 | Power factor PF2 | | dword | ×0.01 |
| 20 | Phase voltage V3 | V | dword | ×0.1 |
| 22 | Current A3 | A | dword | ×0.001 |
| 24 | Active power kW3 | W | dword | |
| 26 | Reactive_power kvar 3 | var | dword | |
| 28 | Power factor PF3 | | dword | ×0.01 |
| 30 | Three-phase active power kW III | W | dword | |
| 32 | Three-phase inductive power kvarL III | var | dword | |
| 34 | Three-phase capacitive power kvarC III | var | dword | |
| 36 | CosF III | | dword | ×0.01 |
| 38 | Three-phase power factor PF III | | dword | ×0.01 |
| 40 | Frequency (L1) hz | Hz | dword | ×0.1 |
| 42 | V12 | V | dword | ×0.1 |
| 44 | V23 | V | dword | ×0.1 |
| 46 | V31 | V | dword | ×0.1 |
| 48 | % THD V 1 | % | dword | ×0.1 |
| 50 | % THD V 2 | % | dword | ×0.1 |
| 52 | % THD V 3 | % | dword | ×0.1 |
| 54 | % THD I 1 | % | dword | ×0.1 |
| 56 | % THD I 2 | % | dword | ×0.1 |
| 58 | % THD I 3 | % | dword | ×0.1 |
| 60 | Active energy kWh | Wh | dword | |
| 62 | Inductive reactive energy kvarh L | varLh | dword | |
| 64 | Capacitive reactive energy kvarh C | varCh | dword | |
| 66 | Three phase apparent power | kVA | dword | |
| 68 | Power demand | W | dword | |
| 70 | Corriente trifsica AIII | A | dword | ×0.001 |
| 72 | Neutral current | A | dword | ×0.001 |
| 82 | Power demand (L2) | W | dword | |
| 84 | Power demand (L3) | W | dword | |
| 500 | L1 fundamental | A | dword | ×0.001 |
| 502 | L1 harmonic 2 | % | dword | |
| 504 | L1 harmonic 3 | % | dword | |
| 506 | L1 harmonic 4 | % | dword | |
| 508 | L1 harmonic 5 | % | dword | |
| 510 | L1 harmonic 6 | % | dword | |
| 512 | L1 harmonic 7 | % | dword | |
| 514 | L1 harmonic 8 | % | dword | |
| 516 | L1 harmonic 9 | % | dword | |
| 518 | L1 harmonic 10 | % | dword | |
| 520 | L1 harmonic 11 | % | dword | |
This is not the complete map: 50 of 152 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.
Circutor (CVM-C10) - MODBUS Maps
Connection and addressing notes
- Protocol
- Modbus
- Register addressing
- all Modbus memory addresses are hexadecimal
- Function codes
- 03, 04 (measurement variables)
Registers in the map: 101 (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.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 2100 | 0A | | dword | |
| 0 | L1 phase voltage | V | dword | ×0.1 |
| 2 | L1 current | A | dword | ×0.001 |
| 4 | L1 active power | W | dword | |
| 6 | L1 inductive power | var | dword | |
| 8 | L1 capacitive power | var | dword | |
| 10 | L1 apparent power | VA | dword | |
| 12 | L1 power factor | | dword | ×0.01 |
| 14 | Cos L1 | | dword | ×0.01 |
| 16 | L2 phase voltage | V | dword | ×0.1 |
| 18 | L2 current | A | dword | ×0.001 |
| 20 | L2 active power | W | dword | |
| 22 | L2 inductive power | var | dword | |
| 24 | L2 capacitive power | var | dword | |
| 26 | L2 apparent power | VA | dword | |
| 28 | L2 power factor | | dword | ×0.01 |
| 30 | Cos L2 | | dword | ×0.01 |
| 32 | L3 phase voltage | V | dword | ×0.1 |
| 34 | L3 current | A | dword | ×0.001 |
| 36 | L3 active power | W | dword | |
| 38 | L3 inductive power | var | dword | |
| 40 | L3 capacitive power | var | dword | |
| 42 | L3 apparent power | VA | dword | |
| 44 | L3 power factor | | dword | ×0.01 |
| 46 | Cos L3 | | dword | ×0.01 |
| 48 | Active three-phase power | W | dword | |
| 50 | Inductive three-phase power | var | dword | |
| 52 | Capacitive three-phase power | var | dword | |
| 54 | Apparent three-phase power | VA | dword | |
| 56 | Three-phase power factor | | dword | ×0.01 |
| 58 | Three-phase cos | | dword | ×0.01 |
| 60 | L1 frequency | Hz | dword | ×0.01 |
| 62 | L1-L2 voltage | V | dword | ×0.1 |
| 64 | L2-L3 voltage | V | dword | ×0.1 |
| 66 | L3-L1 voltage | V | dword | ×0.1 |
| 68 | Neutral current N | A | dword | ×0.001 |
| 70 | L1 voltage % THD | % | dword | ×0.1 |
| 72 | L2 voltage % THD | % | dword | ×0.1 |
| 74 | L3 voltage % THD | % | dword | ×0.1 |
| 76 | L1 current % THD | % | dword | ×0.1 |
| 78 | L2 current % THD | % | dword | ×0.1 |
| 80 | L3 current % THD | % | dword | ×0.1 |
| 82 | Maximum demand kW III | W | dword | |
| 84 | Maximum demand kVA III | VA | dword | |
| 86 | Maximum demand I AVG | A | dword | ×0.001 |
| 88 | Maximum demand I L1 | A | dword | ×0.001 |
| 90 | Maximum demand I L2 | A | dword | ×0.001 |
| 92 | Maximum demand I L3 | A | dword | ×0.001 |
| 512 | Maximum demand kvarL III | kvarL | dword | |
| 514 | Maximum demand kvarC III | kvarC | dword | |
This is not the complete map: 50 of 101 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.
Circutor CVM144 - MODBUS Registers
Registers in the map: 58 (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.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 0 | Phase voltage - V1 | V | dword | ×0.1 |
| 2 | Current - A1 | | dword | |
| 4 | Active power - kW1 | | dword | |
| 6 | Reactive power - kvar1 | | dword | |
| 8 | Power factor - PF1 | PF | dword | ×0.01 |
| 10 | Phase voltage - V2 | V | dword | ×0.1 |
| 12 | Current - A2 | | dword | |
| 14 | Active power - kW2 | | dword | |
| 16 | Reactive power - kvar2 | | dword | |
| 18 | Power factor - PF2 | PF | dword | ×0.01 |
| 20 | Phase voltage - V3 | V | dword | ×0.1 |
| 22 | Current - A3 | | dword | |
| 24 | Active power - kW3 | | dword | |
| 26 | Reactive power - kvar3 | | dword | |
| 28 | Power factor - PF3 | PF | dword | ×0.01 |
| 30 | Three-phase active power-kWIII | | dword | |
| 32 | Three-phase inductive power-kvarL III | | dword | |
| 34 | Three-phase capacitive power-kvarC III | | dword | |
| 36 | Cos M III | | dword | ×0.01 |
| 38 | Three-phase power factor - PF III | | dword | ×0.01 |
| 40 | Frequency (L1) - hz | Hz | dword | ×0.1 |
| 42 | Line voltage L1-L2 - v12 | V | dword | ×0.1 |
| 44 | Line voltage L2-L3 - v23 | V | dword | ×0.1 |
| 46 | Line voltage L3-L1 - v31 | V | dword | ×0.1 |
| 48 | %THD V1 | % | dword | ×0.1 |
| 50 | %THD V2 | % | dword | ×0.1 |
| 52 | %THD V3 | % | dword | ×0.1 |
| 54 | %THD I1 | % | dword | ×0.1 |
| 56 | %THD I2 | % | dword | ×0.1 |
| 58 | %THD I3 | % | dword | ×0.1 |
| 60 | Active energy | kWh | dword | |
| 62 | Inductive reactive energy - kvarh L | | dword | |
| 64 | Capacitive reactive energy - kvarh C | | dword | |
| 66 | Three phase apparent power | | dword | |
| 68 | Power demand (L1) | | dword | |
| 70 | Three-phase current | | dword | |
| 72 | Neutral current | | dword | |
| 74 | Analog input 1 | | dword | |
| 76 | Analog input 2 | | dword | |
| 78 | Analog input 3 | | dword | |
| 80 | Residual (earth leakage) current | | dword | |
| 82 | Power demand (L2) | | dword | |
| 84 | Power demand (L3) | | dword | |
| 500 | Fundamental | | dword | |
| 502 | Harmonic 2 | | dword | |
| 504 | Harmonic 3 | | dword | |
| 506 | Harmonic 4 | | dword | |
| 508 | Harmonic 5 | | dword | |
| 510 | Harmonic 6 | | dword | |
| 512 | Harmonic 7 | | dword | |
This is not the complete map: 50 of 58 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
Chint Power (CPS)
Chint Instrument (DSU666,DTSU666)
Circutor CVM-MINI
Circutor CVM-NRG
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.
