A20B-2000-0720
Fanuc A20B-2000-0720 is 6-slot backplane PCB for large CNC’s. Belonging to the Fanuc series 15 model B control systems. This board is inserted into the yellow plastic frame which holds each board in place to connect the control system together. The PSU is normally on the right hand side of the control with the MAIN or CPU being next from the right. Then its a mixture of various Option boards such as OPT1, OPT2, OPT3 allowing extra axes control, communications, storage; etc.