Boiler 01 Modbus Register 1630: Name Boiler 1 Temperature oben

Technical Definition

The register name Boiler 1 Temperature oben at address 1630 is used to monitor name boiler 1 Temperature oben on the Boiler 01.

• Protocol: Modbus RTU
• Data Type: U WORD
• Unit: °C
• 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 name Boiler 1 Temperatur oben (Address: 1630)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=1630, 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: "name Boiler 1 Temperatur oben"
  address: 1630
  value_type: U_WORD
  unit_of_measurement: "°C"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Boiler 01]

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

💡 Engineer's Insight

Analysis: Boiler 1 Top Temperature (°C or °F). Measures the Temperature at the highest point of the boiler.

Troubleshooting: Could be sensor failure, poor circulation, or low heat output. Check sensor, pump, and burner operation.