Deye Inverter Entities Sensor Modbus Register 186: Name inverter name pv1 power

Technical Definition

The register name inverter name pv1 power at address 186 is used to monitor name inverter name pv1 power on the Deye Inverter Entities Sensor.

• Protocol: Modbus RTU
• Data Type: U 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 pv1 power (Address: 186)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=186, 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 pv1 power"
  address: 186
  value_type: U_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: Photovoltaic (PV) array 1 power output. Measured in Watts (W).

Troubleshooting: Zero indicates no sun, shading, panel fault, or inverter MPPT issue. Verify panel condition and sunlight.