Central Processor Module
The 3-CPU1 controls all the communications and processing of information for modules located in its cabinet. Token ring network communications between CPU modules in other cabinets is also processed by the 3-CPU1. Network communications is RS-485 when the 3-RS485 card is installed in 3-CPU1 connector J2, and fiber optic when the 3-FIB module is connected to J2 of the 3-CPU1.
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