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The Allen-Bradley 1756-IB16D is a highly capable ControlLogix DC digital I/O module featuring 16 diagnostic inputs configured in groups of four. This module is designed for seamless integration into the 1756 ControlLogix chassis and necessitates the use of a compatible removable terminal block, either the 1756-TBNH or 1756-TBSH. With an operating voltage range of 10 to 30V DC and a nominal input of 24V DC, it offers precise performance characterized by a nominal input delay time of 340µs and customizable filter settings for both state transitions. Additional diagnostic capabilities enhance controller awareness by providing critical data such as no load detection and pulse tests, although it does not signal blown or displaced fuses. The modules efficient power consumption includes a total backplane power of 0.84W and a maximum power dissipation of 5.8W at 60°C, maintaining thermal dissipation at 19.78 BTU/hour, making it a robust choice for advanced control system applications.