Brinkwtw Modbus Register 4031: Inlaatluchtvolume ingesteld

Technical Definition

The register Inlaatluchtvolume ingesteld at address 4031 is used to monitor inlaatluchtvolume ingesteld 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 Inlaatluchtvolume ingesteld (Address: 4031)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=4031, 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: "Inlaatluchtvolume ingesteld"
  address: 4031
  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: Setpoint for inlet air volume (m³/h or L/s). The target airflow rate for fresh air intake. Crucial for maintaining required ventilation levels.

Troubleshooting: A zero or unexpected value might indicate a configuration error, communication issue, or disabled function. Verify system settings and controller status.