A20B-2002-0020
Fanuc A20B-2002-0020 is a 3-slot backplane PCB for model C CNC’s. Belonging to the Fanuc series 16C and 18C control systems. This board is inserted into the yellow plastic frame which holds up to 3 seperate boards in place to connect the control system together. The power supply unit is normally in the right slot, with MAIN next and lastly a option 1/2/3 boards offering additional axes control, etc.