The IC694MDL645, produced by Emerson Automation and originally developed by GE Fanuc, is a discrete input module within the PACSystems RX3i platform designed for reliable and flexible digital signal acquisition in industrial automation systems. It provides sixteen (16) 24 VDC input channels arranged in a single group, supporting both positive and negative logic wiring configurations to accommodate various control requirements. The module operates within an input voltage range of 0–30 VDC, with a nominal voltage of 24 VDC and an input current of 7 mA per channel at the rated voltage, ensuring precise and stable signal detection. It draws 80 mA from the 5 VDC backplane and 125 mA from an isolated 24 VDC backplane or an external power source. The IC694MDL645 may be implemented in industrial control environments across North America, Europe, Asia, and worldwide, where dependable DC signal interfacing and flexible logic configuration are vital for efficient automation performance.