Epever Inverter Entities Sensor Modbus Register 12556: Inverter name Load Output Voltage

Technical Definition

The register inverter name Load Output Voltage at address 12556 is used to monitor inverter name load output voltage on the Epever Inverter 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 inverter_name Load Output Voltage (Address: 12556)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=12556, 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: "inverter_name Load Output Voltage"
  address: 12556
  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 Inverter Entities Sensor]

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

💡 Engineer's Insight

Analysis: Output voltage provided by the inverter to the load. Unit: Volts (V).

Troubleshooting: Zero or unstable voltage may indicate inverter fault, overload, or battery issues. Check inverter status and battery level.