Allen-Bradley 1746-IB16 16-Channel Digital Input Module

Allen-Bradley 1746-IB16 is a 16-channel digital input module for the SLC 500 PLC family. It accepts 24V DC signals from field devices and uses sinking inputs (current sinking) to feed the SLC-500 backplane. The module operates over a 10–30V DC input range, aligning with common 24V industrial sensor networks, and provides sixteen discrete inputs that the controller reads in real time. It is a Series 1 I/O module designed for standard 1746 backplane configurations in SLC-500 chassis. Typical applications include monitoring 24V DC control devices such as sensors and switches on manufacturing lines, conveyors, and automation systems, where reliable, deterministic digital input signals are required for PLC logic and sequencing. Construction and wiring are consistent with other 1746-series modules, enabling straightforward installation and integration with existing Rockwell Automation hardware.