FANUCA16B-2300-0110A16B-2300 Group Circuit Board, Revision 02A — New Old Stock, Board Only (Function Not Documented)

Product Description

What this part is

A Fanuc printed circuit board, part number A16B-2300-0110, revision /02A. It is a genuine Fanuc board number in the A16B prefix group, which Fanuc used for control boards and drive units.

Correcting the source data — what we have withdrawn and why:
Our previous listing called this an “Interface Board PCB” and said it was “designed to meet the specific requirements of FANUC’s A16B series,” providing “seamless communication between different parts of the machinery.” We have removed all of that.

The last part was circular: A16B is the board’s own prefix, so saying it is designed for the A16B series tells you nothing. And we could not corroborate “interface board” from Fanuc documentation or from any source we would rely on for a functional claim. Fanuc’s A16B-2300 group is much thinner on the ground in public sources than the A16B-2200 group; the only adjacent number we could find catalogued anywhere was A16B-2300-0020, and one neighbour does not establish a family function.

So we are stating what we know and no more. On a Fanuc control, a board bought against a wrong functional description goes into the wrong slot or does not go in at all, and the machine stays down while a second board is ordered. That is a worse outcome than an honest gap on a product page.

What the part number does tell you

A16B — Fanuc’s PCB prefix for older-generation control boards and drive units. The others in use are A17B and A20B.2300 — the board group. Distinct from the much better documented A16B-2200 group (Series 15/16/18/21 CNC main, PMC, option and robot axis boards) and from A16B-3200 (later-generation main CPU boards). We have not found a published statement of what the 2300 group is for.0110 — this specific board./02A — the revision. Worth recording: on Fanuc boards a revision change can mean a different memory capacity or feature set, not just a manufacturing tweak.

How to confirm you have the right board

Fanuc PCBs carry a twelve-digit part number beginning with A, usually printed in yellow ink on the green board. If the number you can see begins A320 or A350, turn the board over — the A16B/A17B/A20B number is on the reverse. Boards that mount to a master PCB or backplane often do not carry the full number in yellow at all; those sit in a yellow plastic frame with a mounting screw top and bottom, and the complete twelve-digit number is on a white barcode sticker along the top edge.

Match the full number and the revision suffix. A single digit’s difference in a Fanuc part number can mean different hardware, and your machine’s parameters were written against what was fitted.

What is not included

Board only. Not included: the backplane or master PCB it mounts to, the rack or card cage, any daughter cards or memory modules, all cabling and mating connectors, the power supply unit, and any Fanuc system software, PMC ladder or machine data.

Quantity and configuration

Two units in stock, new old stock, sold individually. On an obsolete Fanuc board that is a sensible pair: one to fit and one to hold. New old stock also means these have not been through a machine — no thermal cycling, no coolant exposure, no repair history — which on a thirty-year-old control board is a genuine advantage over a takeout, whatever else we cannot tell you about it.

Interchange guidance

Search forms include A16B-2300-0110, A16B23000110, A16B 2300 0110, A16B-2300-0110/02A, A16B-2300-0110-02A and A16B2300-0110. The only adjacent number we can point to is A16B-2300-0020 (also seen as A16B-2300-0020/03B) — listed for orientation only, not as a substitute.

Fanuc Corporation remains in business, and board-level repair and exchange for A16B boards is handled by the legacy CNC trade — MRO Electric, FanucWorld and Radwell all work on this prefix and hold documentation that is not public. If you can identify this board’s function or its host control from your own parts list or maintenance manual, tell us and we will publish it here with the source credited. We would rather fix this page than leave the gap sitting on it.