All Modbus Register 6185: Output.CenHeatCap

Technical Definition

The register Output.CenHeatCap at address 6185 is used to monitor output.cenheatcap on the All.

• 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 Output.CenHeatCap (Address: 6185)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=6185, 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: "Output.CenHeatCap"
  address: 6185
  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[All]

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

💡 Engineer's Insight

Analysis: Central heating capacity output. Units: Percentage (%) or specific power unit (e.g., kW).

Troubleshooting: Zero may indicate no central heating demand or a fault in the heating system. Check thermostat settings and system status.