Solis Modbus Inv Addon Acr10R 1Ph Modbus Register 3284: Meter Grid Export Active Energy

Technical Definition

The register Meter Grid Export Active Energy at address 3284 is used to monitor meter grid export active energy on the Solis Modbus Inv Addon Acr10R 1Ph.

• Protocol: Modbus RTU
• Data Type: U DWORD
• Unit: kWh
• 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 Meter Grid Export Active Energy (Address: 3284)
# Note: Check if your device uses 0-based or 1-based addressing
result = client.read_input_registers(address=3284, 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: "Meter Grid Export Active Energy"
  address: 3284
  value_type: U_DWORD
  unit_of_measurement: "kWh"

Connection Diagram

Here is the standard RS485 wiring for this configuration:

graph TD
    PLC[Host Controller / Home Assistant]
    Device[Solis Modbus Inv Addon Acr10R 1Ph]

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

💡 Engineer's Insight

Analysis: Accumulated energy exported to the grid. Units: Kilowatt-hours (kWh).

Troubleshooting: Zero value might mean no grid export or a reset. Verify generation and grid connection.