Device Deye Advanced Modbus Register 263: Name inverter name battery voltage timezone2

Technical Definition

The register name inverter name battery voltage timezone2 at address 263 is used to monitor name inverter name battery voltage timezone2 on the Device Deye Advanced.

• Protocol: Modbus RTU
• Data Type: INT16
• 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_voltage_timezone2 (Address: 263)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=263, 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_voltage_timezone2"
  address: 263
  value_type: INT16
  unit_of_measurement: "V"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Device Deye Advanced]

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

💡 Engineer's Insight

Analysis: Battery voltage for timezone 2 (V). Represents the electrical potential of the battery during the second defined time slot.

Troubleshooting: Zero may indicate an unconnected battery, a fault, or a communication issue. Verify battery connections and status.