Allen-Bradley 1746-IO12 Digital Input Output Module

The Allen-Bradley 1746-IO12 is a SLC 500 mixed digital input/output module that provides integrated digital input and digital output channels in a single card, enabling compact I/O expansion within an SLC 500 control system. It mounts in a SLC 500 chassis slot and communicates over the SLC 500 bus, supporting backplane-based I/O expansion, retrofit projects, and reliable machine control across panels, conveyors, packaging lines, assembly machines, and process equipment. This module handles digital discrete signals and is designed for use with Allen-Bradley SLC 500 PLC systems, offering mixed digital signal monitoring and machine output control to help reduce panel space and simplify wiring in manufacturing environments. Manufacturer Part Number 1746-IO12 (Alternate 1746IO12) lists common replacements such as 1746-IB16, 1746-OB16, and 1746-IO8.