Epever Scc Entities Sensor Modbus Register 36866: Scc name Temperature Compensation Coefficient

Technical Definition

The register scc name Temperature Compensation Coefficient at address 36866 is used to monitor scc name Temperature compensation coefficient on the Epever Scc Entities Sensor.

• Protocol: Modbus RTU
• Data Type: U WORD
• Unit: mV
• 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 scc_name Temperature Compensation Coefficient (Address: 36866)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=36866, 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: "scc_name Temperature Compensation Coefficient"
  address: 36866
  value_type: U_WORD
  unit_of_measurement: "mV"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Epever Scc Entities Sensor]

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

💡 Engineer's Insight

Analysis: Temperature coefficient for battery voltage compensation in mV/°C/2V. Adjusts charging voltage based on battery Temperature.

Troubleshooting: An incorrect or zero value can lead to over/undercharging, especially in varying temperatures. Ensure it matches battery specifications.