Digital input module, ControlLogix, These input modules that provide On/off detection and actuation, By using the producer/consumer network model, digital I/O modules can produce information when needed while providing additional system functions, Supports Variety of voltage interface capabilities, Isolated and non-isolated module types, Point-level output fault states, Direct-connect or rack-optimized communication, Field-side diagnostics on select modules, Each module mounts in a ControlLogix chassis and requires either a removable terminal block (RTB) or a 1492 interface module (IFM) to connect all field-side wiring.