Reliance Electric 57413-3E Common Memory Module is a 64K memory module designed for AutoMax racks in Reliance Electric PLC systems, providing a shared memory space for multiple processors. It stores configuration data that must be shared among processors, such as definitions of physical I/O. When placed in slot 0, it handles shared configuration data; in any even slot other than 0, it is used for user-definable data storage only. Identified by part numbers 57413-3E and 57C413B (with J-3636 noted as the related manual), this module supports multi-processor operation by arbitrating processor bus access within AutoMax racks.
