Deye Inverter Entities Sensor Modbus Register 77: Name inverter name grid energy exported today

Technical Definition

The register name inverter name grid energy exported today at address 77 is used to monitor name inverter name grid energy exported today on the Deye Inverter Entities Sensor.

• 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 grid energy exported today (Address: 77)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=77, 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 grid energy exported today"
  address: 77
  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[Deye Inverter Entities Sensor]

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

💡 Engineer's Insight

Analysis: Energy exported to the grid today (kWh). Measures total power fed back to the utility supply.

Troubleshooting: Zero value means no grid export today. This can happen if generation doesn't exceed consumption or export is disabled. Check generation and settings.