Description
Description:
The A16B‑3200‑0425 / A16B‑3200‑0420 Fanuc Used is a main CPU printed circuit board (PCB) made by FANUC for industrial CNC (Computer Numerical Control) systems. It serves as the central processing board in standalone CNC controllers, responsible for running the core machine control programs, coordinating motion and logic, and interfacing with I/O and peripheral modules.
📌 Key Features
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Part Number: A16B-3200-0425
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Type: Main CPU / control PCB
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Series Compatibility: Typically used in FANUC Series 16/21/CNC systems (stand-alone control setups) — often associated with 21i/210i or similar machine platforms.
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Role: Acts as the CPU brain of the controller, processing CNC programs and managing machine functions.
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Programming Requirement: After installation or replacement, all machine parameters and CNC programs must be reloaded from backup; otherwise the machine won’t run correctly.
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Core Exchange/Repair: These boards are often sold as core exchange or repairable units — meaning vendors require you to return your old board and provide services to refurbish or program it.
🛠️ Typical Uses
This board is used as the central processing module inside a FANUC CNC controller cabinet for:
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CNC milling machines
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CNC lathes
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Machining centers
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Other factory automation equipment that use FANUC controls.
It’s essential for controlling the machine’s motion, executing G-code, handling I/O signals, and managing feedback from drives and sensors.