Fanuc Axis Control Card for 16i/ 18i/ 21i A20B-3300-0248

A20B-3300-0248 is a printed circuit board (PCB) used inside CNC control systems produced by FANUC.

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📌 Basic Information

• Part Number: A20B-3300-0248

• Type: Printed Circuit Board (PCB)

• Category: Control / Interface Board

• Used In: FANUC CNC controllers (commonly Series 0i / 16i / 18i / 21i / 30i, depending on the machine builder configuration)

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⚙️ Main Functions

The A20B-3300-0248 board is used for control processing and communication between modules inside the CNC system.

Typical functions include:

• Processing control signals

• Communication between CNC boards

• Interface management with system components

• Supporting overall CNC controller operation

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🧩 Installation Location

This PCB is normally installed:

• Inside the CNC control cabinet

• On the main control rack / motherboard assembly

• Connected through the FANUC system backplane

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🔎 Board Series

The A20B-3300 PCB family includes many similar boards such as:

• A20B-3300-0248

• A20B-3300-0300

• A20B-3300-0301

Differences usually relate to:

• Hardware revisions

• Firmware compatibility

• Specific CNC system configurations

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✅ Simple explanation:
A20B-3300-0248 = FANUC internal CNC control PCB used for signal processing and communication inside the CNC controller. 🔧