Allen Bradley 1756-L61 ControlLogix 2 MB Memory ControllerDescription: The 1756 L61 is a member of the ControlLogix family of controllers, designed to provide scalable control solutions for diverse industrial automation applications. This controller is used to manage and control I O (input output) points across a ControlLogix I O chassis. Specifications: Memory: 2 MB user memory I O Memory: 0. 98 MB Digital I O Capacity: Maximum of 128,000 points Analog I O Capacity: Maximum of 4,000 points Built in