The HPMM is composed of two card types and a UCN interface module. The High-Performance Process Manager Module (HPMM) provides communications through the I/O Link Interface with Input/Output Processors (IOPs) and I/O Link Extenders.
High-Performance I/O Link Card Consists of an I/O Link processor, SRAM through which the processor communicates with the Communications/Control card, an I/O Link driver/receiver interface, and a +24 Vdc to +5 Vdc power converter that provides +5 Vdc for both HPMM cards and the HPM UCN Interface module.