Epever Inverter Entities Sensor Modbus Register 12562: Inverter name Heat Sink Temperature

Technical Definition

The register inverter name Heat Sink Temperature at address 12562 is used to monitor inverter name heat sink Temperature on the Epever Inverter Entities Sensor.

• Protocol: Modbus RTU
• Data Type: S 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 inverter_name Heat Sink Temperature (Address: 12562)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=12562, 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: "inverter_name Heat Sink Temperature"
  address: 12562
  value_type: S_WORD
  unit_of_measurement: "°C"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Epever Inverter Entities Sensor]

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

💡 Engineer's Insight

Analysis: Monitors the Temperature of the inverter's heatsink for thermal management. Measured in degrees Celsius (°C).

Troubleshooting: Elevated temps indicate poor heat dissipation. Check heatsink cleanliness and ensure fan is functioning correctly.