Device Sofar Ktlg3 Modbus Register 28: Name inverter name mosfet Temperature

Technical Definition

The register name inverter name mosfet Temperature at address 28 is used to monitor name inverter name mosfet Temperature on the Device Sofar Ktlg3.

• 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_inverter_name_mosfet_temperature (Address: 28)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=28, 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_inverter_name_mosfet_temperature"
  address: 28
  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[Device Sofar Ktlg3]

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

💡 Engineer's Insight

Analysis: MOSFET Temperature (°C). Measures the Temperature of the power switching transistors (MOSFETs).

Troubleshooting: High MOSFET Temperature indicates stress on power electronics, potentially due to overload, poor cooling, or component degradation.