FANUC A20B-8101-0030 Fast Data Server / Ethernet PCB

Overview

The A20B-8101-0030 is a Fast Data Server / Ethernet PCB in the A20B-8101 family.

Parts and service listings consistently describe it as FAST DATA SERVER/ETHERNET PCB or FAST ETHERNET / DATA SERVER PCB, placing it in the high-speed communication side of the controller rather than in the servo, display, or main power section.

From a practical engineering standpoint, this type of board is used where control hardware needs reliable data exchange and Ethernet-side communication support within the existing FANUC system architecture.

In replacement work, the value of the board lies in maintaining the same communication path and board-level data interface already integrated into the control.

Technical Data

Applications

This board is suited to installed FANUC control systems that already use a Fast Data Server / Ethernet board in the A20B-8101-0030 position.

It is especially relevant in communication-board replacement, controller repair, and network-side maintenance where the original high-speed data interface needs to remain unchanged.

Replacement Guidance

Before ordering, confirm the installed part number and verify that the original communication board is the same Fast Data Server / Ethernet PCB type.

On Ethernet and data-interface boards, exact model continuity matters because the board is tied directly to the communication architecture already configured in the control.

FAQ

Q1: What kind of board is A20B-8101-0030?
It is a Fast Data Server / Ethernet PCB. Listings consistently identify it with that role, which places it in the controller’s high-speed communication layer rather than in the amplifier or motherboard section.

Q2: Why is the Ethernet / data-server function important?
Because that function defines how the board is used in the system. A control that relies on a dedicated Ethernet/data interface should keep the same board class to preserve the original communication structure, especially where stable data transfer is part of the machine architecture.

Q3: Is this a main board?
No. The repeated descriptions place it in the communication and data-interface category.

That means it is a dedicated support board for networked or high-speed data handling, not the system motherboard.

Q4: Why does exact matching matter on this board?
Because Ethernet and data-server boards are selected by installed function, not by shape alone.

A board with a similar connector arrangement may not provide the same communication role. Matching A20B-8101-0030 helps preserve the same internal data interface.

Q5: What should be checked before buying?
Check the installed board code, confirm the controller uses A20B-8101-0030, and verify that the board being replaced is the same Ethernet / data-server type.

These are the most important compatibility points for communication-board replacement.