Allen-Bradley 1756-IF16 ControlLogix Analog Input Module

The Allen-Bradley 1756-IF16 is a 16-channel, non-isolated analog input module for ControlLogix backplanes, housed on a 36‑pin card that plugs into the 1756 I/O rack. In single‑ended mode it provides 16 inputs, while pairing channels for differential mode yields eight differential inputs for improved noise rejection on longer runs. It accepts voltage or current signals with configurable ranges including -10 to +10 V, 0 to 5 V, 0 to 10 V, and 0 to 20 mA, enabling direct connection to a wide range of sensors and transmitters without external conditioning. As a non‑isolated input module, all inputs share a common reference with the backplane, which is typical for many ControlLogix analog modules. The 1756‑IF16 family includes variants such as the 1756‑IF16H, which adds HART communications for smart field devices. Typical applications are multi‑channel data acquisition from process and automation sensors in factories, batch systems, and packaging lines, where synchronized sampling across channels is driven by the ControlLogix controller and Studio 5000 configuration. This module is designed to work with compatible ControlLogix CPUs and I/O backplanes to deliver scalable, multi‑channel analog input for monitoring, control, and alarming.