Epever Scc Entities Sensor Modbus Register 36868: Scc name Charging Limit Voltage

Technical Definition

The register scc name Charging Limit Voltage at address 36868 is used to monitor scc name charging limit voltage on the Epever Scc Entities Sensor.

• Protocol: Modbus RTU
• Data Type: U WORD
• 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 scc_name Charging Limit Voltage (Address: 36868)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=36868, 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 Charging Limit Voltage"
  address: 36868
  value_type: U_WORD
  unit_of_measurement: "V"

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: Voltage (V) at which the SCC limits the charging current to prevent overcharging, often during absorption phase.

Troubleshooting: A low value might prematurely limit charging. A high value can lead to overcharging. Verify based on battery specs.