Allen-Bradley 1492-IFM40DS24A-4 Programmable Logic Controller Module

The Allen-Bradley 1492-IFM40DS24A-4 is a 40-point isolated digital interface module (IFM) in the 1492 Wiring Systems family. It provides isolated digital inputs via four field-side terminals per I/O connection and uses a 40-pin interface cable, with LED indicators to show per-point activity. It operates from a 10–30 V AC/DC supply and is specified for 24/48 V LED indicators, making it suitable for 24 V and 48 V control architectures. As part of Rockwell Automation's 1492 connection devices, the module offers input isolation to minimize noise and cross-talk, while fixed terminal blocks simplify wiring in panel installations. The unit is manufactured in Mexico and is intended for compact digital I/O interfacing with compatible Allen-Bradley PLCs in automation panels and control cabinets.