Epever Scc Entities Sensor Modbus Register 12573: Scc name Battery Rated System Voltage

Technical Definition

The register scc name Battery Rated System Voltage at address 12573 is used to monitor scc name battery rated system 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 Battery Rated System Voltage (Address: 12573)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=12573, 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 Battery Rated System Voltage"
  address: 12573
  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: Nominal battery system voltage. Measured in Volts (V). The designed operating voltage for the battery bank.

Troubleshooting: Incorrect value indicates misconfiguration or a fault in the charge controller's voltage detection system.