The Allen‑Bradley 1746-IB8 is an 8-channel DC input module for the SLC 500 family, providing eight discrete sinking inputs for 24V DC field signals. It operates from a 10–30V DC supply, with eight inputs configured as eight points per common. Backplane current draw is 0.050 A at 5V on the backplane, and there is essentially no backplane current draw when driven from the 24V DC field side. Typical applications include connecting pushbuttons, limit switches, and other 24V DC sensors to a Rockwell Automation SLC 500 system to generate reliable PLC inputs.
