Fanuc RISC board for 16i/ 18i/ 21i A20B-8002-0040

A20B-8002-0040 is a printed circuit board (PCB) used inside CNC control systems manufactured by FANUC.

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📌 Basic Information

• Part Number: A20B-8002-0040

• Type: Printed Circuit Board (PCB)

• Category: Control / Interface Board

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

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⚙️ Main Functions

The A20B-8002-0040 board is used for internal signal processing and communication within the CNC control system.

Typical roles include:

• Processing machine control signals

• Data communication between CNC system boards

• Interface management between modules

• 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

• Connected through the FANUC backplane system

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🔎 Board Series

The A20B-8002 PCB series includes multiple internal boards used in FANUC CNC systems, for example:

• A20B-8002-0040

• A20B-8002-0190

Differences between models usually involve hardware revisions, firmware compatibility, or machine-specific configurations.

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✅ Simple explanation:
A20B-8002-0040 = FANUC internal CNC control PCB used for signal processing and communication inside the CNC controller. 🔧