The Allen-Bradley 2711P-RP9D is a replacement logic module designed for the PanelView Plus 6 series of human-machine interfaces (HMIs). This component serves as the core processing unit for the HMI, running the Windows CE 6.0 operating system and managing the application logic, communication, and data handling. It is powered by a 24V DC input, making it suitable for standard industrial control panels. The module is equipped with multiple communication ports, including Ethernet, RS-232, and USB, providing flexible connectivity options for PLCs and other control devices. As a key part of the modular PanelView Plus 6 system, the 2711P-RP9D allows for efficient maintenance and upgrades of existing operator terminals without replacing the entire unit.