Description
📌 ** — FANUC Display/Graphics Control Module**
FANUC A20B-3300-0281 is an industrial graphic display controller board used inside FANUC CNC machine control systems, especially in the 16i-B, 18i-B, and 21i-B series controllers. It’s part of the A20B-3300 PCB family that supplies display and graphical interface functions.
🧠 What This Part Is
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Part Number: A20B-3300-0281
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Category: Display Graphics Control Module / PCB
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Display Type Support: 8.4″ Color LCD graphics
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Series: FANUC A20B-3300 family
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Role: Serves as the video/graphics controller board that drives the CNC’s operator display.
This board is not a full CNC controller on its own — rather it’s the display controller that handles the visual output and graphical interface on the operator panel when an 8.4″ color LCD is attached.
🧩 Key Functions
✔ Provides 8.4″ color graphic output for the CNC operator interface.
✔ Handles the graphics processing for menus, status screens, and user interaction on compatible displays.
✔ Includes Ethernet connectivity in some configurations to facilitate communication or integration, depending on controller setup.
✔ Plugs into the CNC controller backplane alongside CPU, servo, and I/O boards.
🛠️ Where It Fits
This video/display controller board is typically found in:
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FANUC Series 16i-B controllers
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FANUC Series 18i-B controllers
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FANUC Series 21i-B controllers
It interfaces with the main control logic and provides the graphical interface shown on the operator screen.