The Allen-Bradley 1746-HS is a high-speed counter/encoder input module for the SLC 500 programmable controller platform. This module is engineered to provide precise, high-speed counting and positioning data for a wide range of industrial automation applications, including material handling, packaging, and process control. It features two independent channels that can be configured for various modes, such as quadrature encoder, pulse/direction, or up/down counting. The 1746-HS integrates seamlessly into any SLC 500 I/O chassis, offering a reliable solution for applications that demand accurate tracking of motion, speed, and position.