Deye Inverter Entities Sensor Modbus Register 172: Name inverter name grid external power total

Technical Definition

The register name inverter name grid external power total at address 172 is used to monitor name inverter name grid external power total on the Deye Inverter Entities Sensor.

• Protocol: Modbus RTU
• Data Type: S WORD
• Unit: W
• 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 external power total (Address: 172)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=172, 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 external power total"
  address: 172
  value_type: S_WORD
  unit_of_measurement: "W"

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: Total external control limit for exporting power to the grid. Units: Watts (W).

Troubleshooting: Zero if no external control, inverters off, or no grid connection. Verify external control and inverter status.