Fanuc Graphic Card for 16i/ 18i/ 21i A20B-3300-0300

A20B-3300-0300 is a printed circuit board (PCB) used in CNC control systems manufactured by FANUC.

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📌 Basic Information

• Part Number: A20B-3300-0300

• Type: Printed Circuit Board (PCB)

• Category: Control / Interface Board

• Used In: FANUC CNC systems (commonly Series 0i / 16i / 18i / 21i / 30i, depending on machine design)

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⚙️ Main Functions

The A20B-3300-0300 board is used for control processing and communication between modules in the CNC system.

Typical functions include:

• Processing control signals

• Data communication between CNC modules

• Interface management with other boards

• Supporting overall CNC controller operation

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🧩 Installation Location

This PCB is usually installed:

• Inside the CNC control cabinet

• On the main control rack / motherboard

• Connected through the FANUC system backplane

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🔎 Board Series

The A20B-3300 series includes several similar boards used in different FANUC CNC configurations. Differences between models normally involve:

• Hardware revision

• Firmware compatibility

• Machine builder customization

• Different I/O or interface configurations

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✅ Simple explanation:
A20B-3300-0300 = FANUC internal CNC control PCB used for signal processing and communication inside the CNC controller. 🔧