A20B-8100-0720 is a Panel-i terminal interface printed circuit board (PCB) used in CNC operator display systems made by FANUC.
📌 Description
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Part Number: A20B-8100-0720
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Board Type: Panel-i terminal interface PCB
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Series: A20B-8100 board series
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Application: CNC operator display / Panel-i interface system
⚙️ Function
This board is used inside the Panel-i display unit and is responsible for:
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Handling communication between the CNC control and the display panel
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Managing operator interface signals (keyboard, soft keys, screen data)
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Supporting the terminal interface processing of the operator display system
🧩 Typical System Use
The board is commonly installed in display units used with FANUC i-Series CNC controls, such as:
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16i
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18i
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21i
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some 0i models
It usually works together with other display boards like:
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A20B-8100-0800 (main CPU board for the Panel-i terminal)
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LCD control boards in the display module.
🧠 Summary
A20B-8100-0720 = Panel-i terminal interface PCB used in FANUC CNC display units to manage communication and operator interface signals between the control and the display panel.
If you want, I can also show you the complete board structure inside a FANUC CNC monitor (CPU board, CE cards, LCD boards, inverter)—which is very useful when diagnosing display or boot problems.