Climaveneta W3000 Modbus 【Pro】

The bridge that makes this integration possible is . For facility managers, system integrators, and HVAC engineers, understanding the Climaveneta W3000 Modbus protocol is not just a technical requirement—it is a strategic necessity for optimizing energy consumption, predictive maintenance, and operational uptime.

| Address (Dec) | Address (Hex) | Parameter | Data Type | Access | Unit/Scale | | :--- | :--- | :--- | :--- | :--- | :--- | | 30001 | 0x7530 | Evaporator Entering Temp | Signed 16-bit | Read | °C x 10 | | 30003 | 0x7532 | Evaporator Leaving Temp | Signed 16-bit | Read | °C x 10 | | 30005 | 0x7534 | Condenser Entering Temp | Signed 16-bit | Read | °C x 10 | | 30007 | 0x7536 | Condenser Leaving Temp | Signed 16-bit | Read | °C x 10 | | 30020 | 0x754D | % Compressor Load | Unsigned 16-bit | Read | % (0-1000 = 0-100%) | | 40001 | 0x0000 | Water Setpoint | Signed 16-bit | Read/Write | °C x 10 | | 40010 | 0x0009 | Unit On/Off | Unsigned 16-bit | Read/Write | 1=On, 0=Off | | 40025 | 0x0018 | Alarm Reset | Unsigned 16-bit | Write | 1=Reset | | 30050 | 0x757A | Active Alarm Code 1 | Unsigned 16-bit | Read | See alarm list | Modbus addressing can be confusing. Some BMS masters use PLC addresses (e.g., 40001 = Holding Register 1), while others use Modbus PDU addresses (e.g., 0x0000). Always test a known read-only value (like the firmware version) before relying on writes. Part 7: Writing Values – Setpoint Control via Modbus One of the most powerful features of the Climaveneta W3000 Modbus interface is the ability to remotely adjust setpoints and start/stop the unit. climaveneta w3000 modbus

Disclaimer: This article is for educational purposes. Always use licensed professionals for HVAC control systems and verify register maps with factory manuals. The bridge that makes this integration possible is

This article provides a comprehensive guide to the Climaveneta W3000 Modbus interface, covering its architecture, setup procedures, register mapping, troubleshooting, and best practices. Before diving into the communication protocol, it is essential to understand the hardware. The Climaveneta W3000 series typically refers to their advanced range of screw and centrifugal chillers, often used in data centers, hospitals, and large commercial complexes. These units feature advanced microprocessor-based controls that manage compressors, fans, pumps, and safety circuits. Some BMS masters use PLC addresses (e

A data center BMS wants to reset the chilled water setpoint based on outdoor air temperature (OAT).