Here’s structured content for , tailored for technical documentation, a blog post, or product support page.
| Register Addr (Hex) | Parameter | Values | |--------------------|-----------|--------| | 0x1000 | Unit Enable | 0 = Local, 1 = Remote (Modbus) | | 0x1001 | Setpoint (cooling) | °C x 10 | | 0x1002 | Setpoint (heating) | °C x 10 | | 0x1010 | Command: ON/OFF | 1 = ON, 0 = OFF (if remote enabled) |
The base W3000 motherboard has a slot for an optional fieldbus card. The specific part number for Modbus RTU is often denoted as or "Scheda Modbus RTU" . Verify with Climaveneta technical documentation, as some units use a universal gateway card that must be configured for Modbus. climaveneta w3000 modbus
The interface is a powerful, reliable gateway to the heart of your chiller plant. While the initial setup requires attention to electrical details (RS-485 termination) and register mapping (float swapping), the payoff is enormous: centralized monitoring, remote setpoint management, predictive analytics, and utility bill savings.
Requires a shielded twisted-pair cable. Terminals are typically marked for GND, Tx/Rx+, and Tx/Rx-. A 120-ohm termination resistor is often necessary at the end of the daisy chain to prevent signal reflection. Hardware Requirements W3000 Controller Interface Manual - Heat Pump - Scribd Here’s structured content for , tailored for technical
Not every Climaveneta W3000 unit ships with Modbus active. You need specific hardware:
| Register Address (Decimal) | Parameter | Data Type | Units / Scale | Access | | :--- | :--- | :--- | :--- | :--- | | 0 | Unit Status (Off/On/Alarm) | Uint16 | Enum (0=Off,1=On,2=Alarm) | Read | | 1 | Operating Mode | Uint16 | 0=Cool, 1=Heat, 2=Auto | Read/Write | | 2 | Remote On/Off | Uint16 | 0=Local, 1=Remote | Read/Write | | 10 | Active Setpoint | Float (2 regs) | °C x 10 (e.g., 70 = 7.0°C) | Read | | 20-21 | Evaporator Entering Temp | Float | °C | Read | | 22-23 | Evaporator Leaving Temp | Float | °C | Read | | 24-25 | Condenser Entering Temp | Float | °C | Read | | 26-27 | Condenser Leaving Temp | Float | °C | Read | | 40-41 | Suction Pressure | Float | Bar | Read | | 50-51 | Discharge Pressure | Float | Bar | Read | | 100-101 | Compressor 1 Current | Float | Amps | Read | | 102-103 | Compressor 2 Current | Float | Amps | Read | | 200 | Alarm Code 1 (Active) | Uint16 | Climaveneta proprietary code | Read | | 210 | Total Running Hours | Uint32 (2 regs) | Hours | Read | | 500 | Chiller Enable (Remote Setpoint) | Uint16 | 0-100% capacity limit | Write | Requires a shielded twisted-pair cable
| Parameter | Typical W3000 Setting | Notes | | :--- | :--- | :--- | | | Modbus RTU | (Not ASCII, not TCP) | | Baud Rate | 9600 or 19200 bps | 9600 is default for long runs | | Data Bits | 8 | Fixed | | Parity | Even (or None) | Check unit; Even is most common for Italian OEMs | | Stop Bits | 1 | Fixed | | Slave ID (Address) | 1 to 247 | Unique per chiller on the same bus | | Byte Order | Float: 1-0-3-2 or 0-1-2-3 | Crucial for 32-bit values (temperatures) |