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ABB RTA Board PU515A 3BSE032401R1 Real Time Accelerator Module.This product is RTA Board with Dual ch. MB300.Step Up /Exchange from PU515, PU518 or PU519 to PU515A 3BSE032401R1.

Communication module STUP-PU515A-PU51X，it uses to communicate with ABB AC450 Controller.The real time accelerator is the communication card inside a Unix workstation serving as the op station on Advant.It communicates to the MB300 propriority ethernet bus to the controller subsystems.If this card is missing or faulty, the OS500 application on the Unix will not come up.