Fanuc Motherboard for 21i A20B-8100-0662

A20B-8100-0662 is a printed circuit board (PCB) used inside CNC control systems produced by FANUC.

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📌 Basic Information

• Part Number: A20B-8100-0662

• Type: Printed Circuit Board (PCB)

• Category: Control / Interface Board

• Used In: FANUC CNC control units (commonly Series 0i / 16i / 18i / 21i, depending on the machine builder configuration)

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⚙️ Main Functions

The A20B-8100-0662 board is an internal CNC control board that helps manage communication and signal processing within the CNC system.

Typical roles include:

• Data communication between CNC system modules

• Signal processing and control logic

• Interface management between different control boards

• Supporting overall CNC controller operation

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🧩 Installation Location

This board is normally installed:

• Inside the CNC control cabinet

• On the main control rack / motherboard assembly

• Connected to other FANUC boards through the system backplane

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🔎 Relation to Similar Boards

The following boards belong to the same A20B-8100 PCB family:

• A20B-8100-0660

• A20B-8100-0661

• A20B-8100-0662

These are usually hardware revisions or configuration variants of a similar base board used in FANUC CNC systems.

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✅ Simple explanation:
A20B-8100-0662 = FANUC internal CNC control PCB used for signal processing and communication between modules inside the CNC controller. 🔧