A20B-8002-0191
Fanuc A20B-8002-0191 sub CPU board. This addtional PCB is a secondary slot in board on the riser from the main i series control PCB. The riser allows for conventional integrated 16i, 18i, 21i controls too expand too multi spindle, axes, interface links such as I/O link with multiple communications protocols possible.
DNC stock this sub CPU card allowing a secondary spindle either analog or serial
