How to connect Circutor CVM-C10 energy meter with Reduxi controller
Connect your Circutor CVM-C10 power analyzer to the Reduxi Controller.
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Product photo of a black square panel-mount power analyzer on a light grey background. Top left: 'Circutor' logo; top right: 'CVM-C10'. Orange backlit display with '4W 3 Ph' and 'kWh' labels, a vertical percentage bar scale at the left (10 to 120 %, 'MAX', 'POWER'), and rows 'T1' 28.300, 'T2' 28.100, 'T3' 27.900 and 'TOTAL' 84.300. At the bottom of the display a power factor scale from -0.5 through 1 to +0.5 with the centre segment filled. Below the display three touch symbols: left arrow, menu (three lines) and right arrow.
1 Technical documentation
Manufacturer documents and downloads for the Circutor CVM-C10:
- Circutor downloads – Instructions to connect and configure the device, as linked in the earlier version of this guide.
- CVM-C10 product page (CVM-C10-ITF-IN-485-IC2) – Product description, specifications and document list.
- CVM-C10 datasheet – Specifications, dimensions and communication interface.
2 Required equipment
- Circutor CVM-C10 power analyzer with RS-485 interface, installed by a qualified electrician
- RS-485 cable
- Reduxi Controller
- Laptop or tablet with internet access to configure the device in Reduxi
3 Connect and configure the meter
Find the instructions to connect and configure the meter in the documents of Point 1.
3.1 Interface and protocol
The CVM-C10 communicates via an RS-485 interface. It supports the protocols Modbus/RTU and BACnet. Reduxi reads the meter via Modbus.
3.2 Modbus settings on the meter
Set the Modbus parameters in the setup of the meter. The manual lists a baud rate of 9600 to 19200.
You need the Modbus unit ID of the meter in the Reduxi Configurator. Normally, 1 is used.
4 Log in to the Reduxi web interface
You can open the Reduxi web interface in two ways:
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Screenshot of three Reduxi mobile app screens side by side, with cyan boxes and number badges 2 to 4. Left screen (dashboard, dark theme): menu icon at top left marked with a box and badge 2; 'reduxi' logo; tabs 'Real time data' (active) and 'Statistics'; price 5.79 € and temperature 3.2 °C; energy flow diagram with a house in the centre (-1.25 kW) and icons with values 69.0 W, 1.3 kW, 1.1 kW (red ring), -165.0 W with 97 % (red ring) and 0.0 W values at the bottom; tabs 'Power' and 'Energy'; bottom navigation: Dashboard, Diagnostics, Device control, Settings. Middle screen (side menu): 'reduxi' logo, 'Number of locations: 1233', heading 'Reduxi device management', entries '+ Add Reduxi location' and 'Reduxi devices' (marked with a box and badge 3), then 'My profile' and 'About app'. Right screen (device page): Back; picture of a black Reduxi controller with two Ethernet ports; status 'Connected'; card 'Update available': 'New update is available for your Reduxi device.' with button 'Download and install update'; card 'Connect to configurator': 'Tunnel connection enables remote access to your Reduxi configurator, without need to be connected to the same local network.' with button 'Activate tunnel connection' (marked with a box and badge 4); card 'Unit details' with field 'Unit ID'.
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Screenshot made of two parts side by side. Left part: Reduxi mobile app screen on a dark background. Top: Back button; picture of a black Reduxi controller with two Ethernet ports and a terminal block; status 'Connected' with a Wi-Fi icon. Card 'Update available': 'New update is available for your Reduxi device.' with button 'Download and install update'. Card 'Connect to configurator' with a key icon: 'Tunnel connection enables remote access to your Reduxi configurator, without need to be connected to the same local network.' and button 'Open configurator', marked with a cyan box and number badge 5. Below: card 'Unit details' with a field 'Unit ID' (value not visible). Right part: Reduxi Configurator opened in a browser, marked with a cyan frame and number badge 6. Header: back arrow, 'Tunnel connection', reload icon. Left sidebar with icons (lightning, chip, lightning bolt, bar chart, gear). Page 'Home' with a green link icon. Green notice: 'New patch available. Click here to apply.' with a close X. Time 09:12:56. Energy flow diagram with a house in the centre (1.700 kW) and icons for grid (0.000 kW), solar (1.700 kW), battery (green, 0.000 kW and 0.800 kW), a device at left (0.900 kW), electric vehicle and a charger or device at bottom. Label 'Energy manager' at the bottom.
http://reduxi.local. You can find the controller's IP address in your router's device list or in the Reduxi app under Reduxi devices.admin · Password: admin (factory default)Text description of this image
Screenshot of the Reduxi Configurator login page in a Chrome browser window. The address bar shows 'Not secure' and 'reduxi.local'; the address bar is marked with a cyan box and an enlarged copy of it (cyan box, text 'Not secure reduxi.local') is shown at the left, connected by a cyan line. Page background: light grey line drawing of a house with solar panels (green), a wall box, an inverter, a car and a charger. Top left: 'reduxi configurator' logo. Login box in the centre with title 'Login', a language selector (English flag, 'English'), a username field and a password field, and a dark 'Login' button.
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Screenshot of the Reduxi Configurator web interface after login, light theme. Top left: 'reduxi configurator' logo. Header bar: 'Home' at left, green 'Connected' status at top right. Left sidebar: expanded section 'Devices' with a list of entries, then collapsed sections 'Manager' and 'Configuration' and 'Settings'. Main area: energy flow diagram. House in the centre with ring, value 24.20 kW. Grid icon at top left, 24.20 kW (red dot on its line). Solar icon at top right, value '-'. Left icon (battery or device), 6.700 kW (green dot on its line). Right icons (battery storage and a device), values '-'. EV charger icon at bottom left, 31.00 kW. A further device icon at bottom right. Label 'Energy manager' below the house.
5 Add the meter to Reduxi
Use these steps to add a new meter or to edit an existing one.
5.1 Basic settings
Log in to the Reduxi Configurator via the browser (see Point 4) and click Add device.
In the first step, enter the basic settings of the device. Then click Next.
5.2 Communication settings
Select the communication channel. Then enter the device configuration:
| Parameter | Value |
|---|---|
| Modbus unit ID | Normally 1
|
Then enter and choose the advanced settings. Serial parameters, if requested, must match the settings of the meter (see Point 3).
5.3 Test communication
Click Test communication at the bottom of the wizard. It reads the Circutor CVM-C10 once and saves nothing. If the test succeeds, click Done: only Done creates the device.
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Screenshot of the bottom button bar of a Reduxi Configurator page. Left: button 'Back'. Right: button 'Test communication' (marked with a cyan box) and dark button 'Done'.
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Screenshot of the Reduxi Configurator page 'Communication channel and device configuration'. Connection *: TCP/IP (dropdown). IP *: 192.168.50.243, with button 'Scan for IP'. Port *: 502, with button 'Test port'. Modbus unit ID *: 1. Buttons at the bottom: Back (left), Test communication and Done (right). The Done button is marked with a cyan box.
6 Check the readings
6.1 Last measurements
After communication is established, check the values under Devices in the Reduxi Configurator. Reduxi only reads the meter.
✓ Summary
Preparation (Points 1–2): Read the Circutor documents and prepare the equipment.
Circutor CVM-C10 (Point 3): Connect the meter via RS-485. Set the Modbus parameters and note the Modbus unit ID.
Add to Reduxi (Points 4–5): Log in to the Reduxi Configurator, add the meter with its Modbus unit ID and test the communication.
Go live (Point 6): Check the readings. Reduxi reads the meter.
→ Common issues
| Issue | Solution |
|---|---|
| Test communication fails | Check that the Modbus unit ID in Reduxi equals the Modbus address set on the meter. Check that the serial parameters match. |
| The meter does not respond on the RS-485 bus | Check the RS-485 cabling and the communication settings on the meter. |
| Open configurator does not open or stays empty | The tunnel is not active yet. Wait about 30 seconds and check that the controller is online. |
Login with admin is rejected |
The password was changed during installation. Ask the installer. The Reduxi account password does not work here. |
reduxi.local does not load |
Your device is not in the same network as the controller. Use the IP address or the tunnel connection. |
| Communication test fails, device shows offline | Check reachability, IP address / port / unit ID, and that the protocol is enabled on the device. |