Deye Inverter Entities Sensor Modbus Register 201: Name inverter name battery equalization voltage

Technical Definition

The register name inverter name battery equalization voltage at address 201 is used to monitor name inverter name battery equalization voltage on the Deye Inverter Entities Sensor.

• Protocol: Modbus RTU
• Data Type: U WORD
• Unit: V
• 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 battery equalization voltage (Address: 201)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=201, 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 battery equalization voltage"
  address: 201
  value_type: U_WORD
  unit_of_measurement: "V"

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: Battery equalization charging voltage. High voltage phase for balancing cells. Measured in Volts (V).

Troubleshooting: Zero or absent indicates equalization is not active or disabled. Check battery type and inverter configuration.