Channel 16 Modbus Register 1606: Channel 16 luftfugtighed

Technical Definition

The register channel 16 luftfugtighed at address 1606 is used to monitor channel 16 luftfugtighed on the Channel 16.

• Protocol: Modbus RTU
• Data Type: INT16
• Unit: %
• 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 channel_16 luftfugtighed (Address: 1606)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=1606, 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: "channel_16 luftfugtighed"
  address: 1606
  value_type: INT16
  unit_of_measurement: "%"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Channel 16]

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

💡 Engineer's Insight

Analysis: Measured humidity at Channel 16's location (%).

Troubleshooting: Inspect sensor integrity, wiring, and calibration. High humidity environments can impact sensor accuracy.