Allen-Bradley 1771-DXTSA Digital Input Module

Allen-Bradley 1771-DXTSA Digital Input Module is a member of the 1771 I/O family, designed to interface discrete input devices with compatible Allen-Bradley controllers. It mounts in a 1771 I/O chassis and conveys the state of external sensors and switches to the controller as part of the module’s input image, enabling the control program to react in real time. This digital input module is commonly used to monitor binary devices such as door interlocks, pushbuttons, limit switches, and proximity sensors across manufacturing lines, packaging operations, and process-control applications. Within the 1771 ecosystem, it adheres to the family’s standard data-table addressing and backplane communication conventions, providing predictable integration with other digital I/O modules in the same chassis and supporting scalable expansion of I/O as system needs grow.