Device Sofar Modbus Register 537: Name inverter name energy exported today

Technical Definition

The register name inverter name energy exported today at address 537 is used to monitor name inverter name energy exported today on the Device Sofar.

• Protocol: Modbus RTU
• Data Type: U WORD
• 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_energy_exported_today (Address: 537)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=537, 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_energy_exported_today"
  address: 537
  value_type: U_WORD
  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]

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

💡 Engineer's Insight

Analysis: Total energy exported to grid today (kWh). Shows surplus energy sent out.

Troubleshooting: Zero if no surplus or grid connection issue. Negative values might indicate import.