Esphome Deye Modbus Register 91: Device name temperatura

Technical Definition

The register device name temperatura at address 91 is used to monitor device name temperatura on the Esphome Deye.

• Protocol: Modbus RTU
• Data Type: U WORD
• Unit: º
• 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 temperatura (Address: 91)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=91, 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 temperatura"
  address: 91
  value_type: U_WORD
  unit_of_measurement: "º"

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: Internal device Temperature. Units: °C. Affects performance and longevity.

Troubleshooting: High readings may indicate poor ventilation or overload. Check cooling fans and ambient Temperature.