Esp8266 Seplos V3 Example Modbus Register 4368: Name cell Temperature 1

Technical Definition

The register name cell Temperature 1 at address 4368 is used to monitor name cell Temperature 1 on the Esp8266 Seplos V3 Example.

• Protocol: Modbus RTU
• Data Type: S WORD
• Unit: °C
• 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 cell temperature 1 (Address: 4368)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=4368, 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 cell temperature 1"
  address: 4368
  value_type: S_WORD
  unit_of_measurement: "°C"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Esp8266 Seplos V3 Example]

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

💡 Engineer's Insight

Analysis: Measures the Temperature of cell 1 in a battery pack. Units: Degrees Celsius (°C). Typically read as an integer or scaled float.

Troubleshooting: 0°C might indicate sensor failure, disconnection, or an extremely cold environment. Verify sensor and ambient conditions.