1756-L61/B Allen Bradley Processor/Controller
The 1756-L61/B processor module is part of the ControLogix series of products designed by Allen-Bradley/Rockwell Automation. This module/controller has Series A and Series B variants and it features a fixed memory of 2, 4, or 8 MB and a non-volatile memory which is available through the integration of a Compact Flash card as an option.