Modbus — Climaveneta W3000

Once the hardware is installed, you must configure the "supervisor" settings within the W3000 menu to match your BMS: : Set to Modbus . Baud Rate : Typically 9600 or 19200 baud .

: The serial card (often a PCOS004850 for RS485/Modbus) is inserted into a dedicated slot labeled "BMS Card" on the controller board.

The W3000 provides a variety of data points (registers) that can be read or written by a Modbus master. W3000+Version 17 - Alklima climaveneta w3000 modbus

: A unique address ranging from 001 to 200 (default is often 11).

The Climaveneta W3000 controller is a widely used microprocessor system designed for managing hydronic units like chillers and heat pumps. Integrating this controller with a Building Management System (BMS) via the protocol allows for centralized monitoring, real-time data logging, and remote control of critical HVAC parameters. Required Hardware for Modbus Communication Once the hardware is installed, you must configure

: Connections typically use a shielded, twisted-pair cable (3 x AWG 22/7). A 120-ohm termination resistor should be placed at the end of the communication line to prevent signal interference. Configuration and Communication Parameters

: Ensure "On/Off enable" and "Operating mode enable" are set to Yes if you intend to control the unit remotely rather than just monitor it. Common Modbus Registers for W3000 The W3000 provides a variety of data points

To enable Modbus communication, the W3000 controller must be equipped with a specific .