Allen-Bradley 1756-L62 Memory Controller Module is a ControlLogix 4 MB Memory Controller that provides 4 MB of user memory for ControlLogix systems. It supports up to 250 controller connections, enabling multiple I/O and logic paths within a single chassis. Rockwell Automation lists this module as discontinued as of June 1, 2017, reflecting its status in legacy ControlLogix configurations. Some distributor listings also note memory specifications that include 4 MB user memory, 478 KB I/O memory, and 128 MB nonvolatile memory.
