The Allen-Bradley 1715-IB16D is a 16-point Discrete Input Module from the Rockwell Automation Bulletin 1715 Redundant I/O system, designed for fault-tolerant industrial control applications. This module provides sixteen (16) discrete input channels that operate within an 18–32 VDC input voltage range, ensuring reliable signal detection in demanding environments. The 1715-IB16D requires either the 1715-TASIB16D or 1715-TADIB16D terminal base assembly for proper installation and wiring. It supports a maximum slew rate of 3600 V/s and a translation frequency of 1/(Application scan time + 10 ms) Hz. Built for high-availability automation architectures, the 1715-IB16D enhances system reliability and minimizes downtime by ensuring continuous and accurate digital signal acquisition across redundant I/O configurations.