Allen Bradley Main Processor with Extended Instructions, CAT # - 1775-L2

Allen Bradley Main Process with Extended Instructions, CAT # - 1775-L2. The main processor module is used in PLC-3 programmable controller systems to provide program execution and memory management. The module occupies two slots in the processor chassis. It is recommended that you install the module in the two, left-most slots. The module receives its power and communicates with other modules through the PLC-3 chassis backplane.