Belimo Energy Valve V3 Modbus TCP

Use cases

• Monitor real-time flow, power, and cumulative energy consumption per hydronic zone on a live dashboard.
• Create alerts when delta temperature drops below the setpoint, indicating potential hydraulic imbalance.
• Remotely adjust the valve setpoint and Vmax or Pmax limits to optimize energy distribution without a site visit.
• Track glycol concentration over time and receive a notification if it falls outside the acceptable range.
• Compare heating and cooling energy totals across multiple Energy Valves to identify energy leaks in the building.
• Log thermal energy data for reporting to building owners or energy consultants on a weekly or monthly basis.

Installation

1. 1Connect the Belimo Energy Valve V3 to the local IP network and assign it a static IP address using the Belimo configuration tool or the device display.
2. 2Verify that Modbus TCP is enabled on the Energy Valve V3 and note the configured Modbus TCP port (default 502).
3. 3Wire your ModbusCloud gateway (MCG or MLP series) to the same IP network and ensure it can reach the valve IP address.
4. 4In the ModbusCloud portal, add a new Modbus TCP device using the valve IP address and port, then import the Belimo Energy Valve V3 template.
5. 5Confirm that register values such as flow, power, and temperatures appear correctly on the dashboard, paying attention to the uint32 two-word registers.
6. 6If needed, adjust the template unit variant from metric to imperial to match your project requirements.

Things to watch for

01

Why do flow and energy readings show incorrect or very large values?

The Energy Valve V3 uses uint32 (two-word) registers for flow, power, and energy. Make sure the register length is set to 2 words and the byte/word order matches the Belimo default (big-endian). The template configures this automatically, but manual edits can break it.

02

Can I use this template for the Energy Valve V4?

No. The V4 has a different register map and additional features such as MID-certified metering and Power over Ethernet. Use the dedicated V4 template if available.

03

What is the default Modbus TCP port on the Energy Valve V3?

The default port is 502. You can verify or change it through the Belimo configuration interface or the device display.

04

Do I need a specific firmware version on the Energy Valve V3?

Belimo recommends running the latest available firmware to ensure full Modbus TCP register support. Check the Belimo website or contact Belimo support for the minimum firmware version required for all mapped registers.

Registers (56)

40 read / 16 write

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