The 1734-VHSC24 is a module designed and manufactured by Allen-Bradley, a brand owned by Rockwell Automation. It is a part of the ControlLogix family of programmable logic controllers (PLCs) and is used for high-speed counting, motion, and sequence operations.

The 1734-VHSC24 module provides four independent high-speed counter channels with a maximum counting frequency of 2 MHz. It supports various input types, including single-ended, differential, and quadrature encoders. The module offers precise position and motion control capabilities, making it suitable for applications that require high-speed counting or precise motion synchronization.

The 1734-VHSC24 module is typically used in industrial automation systems where accurate tracking and control of motion or position are critical. It can be integrated into a ControlLogix chassis and programmed using Rockwell Automation's RSLogix or Studio 5000 software.