FANUCBackplane Motherboard for Series 0-C (Zero Model C) CNC Control

Product Description

What this part is

The Fanuc A02B-0098-B501 backplane motherboard from a Series 0-C (Zero Model C) CNC control. It is the structural and electrical foundation of the control cage: the master PCB screws onto this backplate, and every peripheral card in the control — at minimum a power supply, a memory PCB, an axis PCB and an I/O PCB — then plugs into the master through it.

It is a passive backplane assembly, not a CPU board and not a processor card. There is no processor, no memory and no I/O function of its own.

Decoding the order code

A02B: Fanuc prefix for CNC control units and their major assemblies, including operator panels, control cages and backplanes. It sits above the board-level A16B and A20B prefixes: an A02B number describes an assembly.

0098: the control model group. A02B-0098 is the Fanuc Series 0-C (Zero Model C) family, which covers the 0-TC turning, 0-MC milling and 0-TF variants.

B501: the specific assembly within that model group; the B-prefixed numbers in this range are the backplane / motherboard assemblies. The sibling A02B-0098-B511 is the corresponding backplane for another 0-C build.

What these specs mean in practice

Because the backplane defines the slot arrangement of the cage, it has to match the master PCB and card set the control was built with. A Series 0-C backplane will not accept Series 0-A or 0-B cards, nor anything from the later Series 16/18 or i-series generations — those use entirely different cage numbering. The number stamped on the backplate being replaced, and the slot count against the intended card set, are the two things that decide the match.

The other practical point: a backplane is the one part of a Fanuc control that carries no data and no software. Nothing here needs programming.

Quantity and configuration

Sold as 1 piece — one bare backplane motherboard assembly, passive. New old stock, in an opened box. The master PCB, power supply, memory, axis and I/O cards are separate items matched to the control build.

Part numbers and related units

Part number forms of the same part: A02B-0098-B501, A02B0098B501, A02B 0098 B501. Related but not interchangeable: A02B-0098-B511, which is a different backplane build in the same 0-C family, and the A20B-2000-0170 / A20B-2000-0175 master boards, which are the boards that mount onto a 0-C backplane rather than substitutes for one.