Esphome Deye Modbus Register 173: Device name inverter outputs l1 power

Technical Definition

The register device name inverter outputs l1 power at address 173 is used to monitor device name inverter outputs l1 power on the Esphome Deye.

• 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 device_name inverter outputs l1 power (Address: 173)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=173, 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: "device_name inverter outputs l1 power"
  address: 173
  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[Esphome Deye]

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

💡 Engineer's Insight

Analysis: Inverter's L1 output power (W). Represents active power delivered to the grid or load.

Troubleshooting: Verify inverter operation, grid connection, and load demand. Check for grid faults or inverter limitations.