The Allen-Bradley 1756-RIO is a ControlLogix Remote I/O (RIO) communication module designed to connect ControlLogix systems to legacy RIO networks. This module can function either as a scanner or an adapter, allowing flexible integration with various devices and control architectures. It supports block transfer instructions, enabling efficient transmission of analog and specialty data between controllers and field devices. Featuring one (1) RIO port, the 1756-RIO can interface with up to 32 physical racks (addresses 0–76) in any combination of rack sizes and block transfers, providing robust and scalable connectivity for industrial automation systems.