Epever Scc Entities Sensor Modbus Register 12546: Scc name PV Input Power

Technical Definition

The register scc name PV Input Power at address 12546 is used to monitor scc name pv input power on the Epever Scc Entities Sensor.

• Protocol: Modbus RTU
• Data Type: U DWORD R
• Unit: W
• 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 PV Input Power (Address: 12546)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=12546, 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 PV Input Power"
  address: 12546
  value_type: U_DWORD_R
  unit_of_measurement: "W"

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: Solar panel input power. Measured in Watts (W). The instantaneous electrical power supplied by the PV array.

Troubleshooting: Zero indicates no sunlight or PV array fault. Low values may point to insufficient irradiation or system inefficiencies.