| Command | Function | |---------|----------| | VER | Display firmware version (should show 1.0.x) | | STATUS | Show system health (temp, voltage, uptime) | | SET IP 192.168.1.100 | Configure static IP | | SET MODBUS RTU | Enable Modbus protocol | | FACTORY RESET | Restore Ver 1.0 defaults | | REBOOT | Restart controller |