Brinkwtw Modbus Register 4032: Huidig inlaatluchtvolume

Technical Definition

The register Huidig inlaatluchtvolume at address 4032 is used to monitor huidig inlaatluchtvolume on the Brinkwtw.

• Protocol: Modbus RTU
• Data Type: S WORD
• Unit: m3/h
• Access: Read Only

How to Read (Python pymodbus)

Use this code snippet to read this specific value via RS485:

from pymodbus.client.sync import ModbusSerialClient

client = ModbusSerialClient(method='rtu', port='/dev/ttyUSB0', baudrate=9600)
client.connect()

# Read Huidig inlaatluchtvolume (Address: 4032)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=4032, count=2, unit=1)

if not result.isError():
    print(f"Raw Value: {result.registers}")
else:
    print("Error reading register")

client.close()

Integration (Home Assistant)

Paste this into your configuration.yaml:

- platform: modbus_controller
  name: "Huidig inlaatluchtvolume"
  address: 4032
  value_type: S_WORD
  unit_of_measurement: "m3/h"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Brinkwtw]

    PLC -- "A+ (D+)" --> Device
    PLC -- "B- (D-)" --> Device
    PLC -- GND --> Device

💡 Engineer's Insight

Analysis: Huidig inlaatluchtvolume (Current Inlet Air Volume) - Measured in m³/h or CFM, indicating airflow entering the system.

Troubleshooting: Zero reading suggests fan failure, blocked inlet, or sensor malfunction. Verify fan operation and check for obstructions.