Allen-Bradley 1756-IB16 ControlLogix Input Module

The Allen-Bradley 1756-IB16 is a 16-channel digital input module for ControlLogix systems that reads DC-level signals from field devices. It accepts 10–31 VDC input signals across 16 channels and uses a 20-pin terminal block for wiring, designed to plug into a 1756 I/O backplane for backplane communication with the controller. This module provides current-sinking inputs and includes module status indicators for input and communication, plus a module health display to aid diagnostics. Typical applications include wiring pushbuttons, limit switches, proximity sensors, and other discrete sensors in manufacturing automation and process control where robust DC input detection is required.