Deye Inverter Entities Advanced Modbus Register 257: Name inverter name power timezone2

Technical Definition

The register name inverter name power timezone2 at address 257 is used to monitor name inverter name power timezone2 on the Deye Inverter Entities Advanced.

• Protocol: Modbus RTU
• Data Type: INT16
• 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 power timezone2 (Address: 257)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=257, 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 power timezone2"
  address: 257
  value_type: INT16
  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 Advanced]

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

💡 Engineer's Insight

Analysis: Defines the active power limit for timezone 2. Units are typically Watts (W).

Troubleshooting: Zero value may indicate no power limit or a disabled setting. Check system configuration.