Device Sofar Ktlg3 Modbus Register 21: Name inverter name ac output energy total

Technical Definition

The register name inverter name ac output energy total at address 21 is used to monitor name inverter name ac output energy total on the Device Sofar Ktlg3.

• Protocol: Modbus RTU
• Data Type: U DWORD
• Unit: kWh
• 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_ac_output_energy_total (Address: 21)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=21, 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_ac_output_energy_total"
  address: 21
  value_type: U_DWORD
  unit_of_measurement: "kWh"

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: Total AC Energy Yield (kWh). Cumulative energy produced by the inverter since installation.

Troubleshooting: Should continuously increase. Stagnation indicates no power generation. Resetting might occur after firmware updates or faults.