Description
The FANUC A16B-3200-0420 is a main CPU printed circuit board (PCB) used in industrial CNC (Computer Numerical Control) systems. It serves as the central processing unit for FANUC Series 16/160i control units*, handling core control functions, program execution and real-time processing of machine commands.
🧠 Core Function
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Main CPU Board: Acts as the central processor in FANUC CNC controllers — it executes machine programs and coordinates the system’s logic, motion control, and I/O operations.
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Stand-Alone Use: Designed for systems where the board mounts as the main control module inside the controller chassis without integrated display.
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System Role: Essential for reliable operation of CNC machines — if this board fails, the machine will generally not boot or run.
📋 Key Details
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Part Number: A16B-3200-0420
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Category: Main CPU / Control PCB
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Compatible With: FANUC Series 16, 160i and related Model B controllers (often found on 16i/160i CNC systems).
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Function: Processes CNC programs, performs motion and logic control, and interfaces with I/O and peripheral boards.
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Status: Some listings note it may be discontinued by the manufacturer but available as new, surplus, or refurbished stock.
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Installation: Usually requires appropriate firmware/parameters loaded to match your machine controller configuration.
🏭 Typical Use Cases
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CNC milling machines
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CNC lathes
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Machining centers
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Industrial automation systems where precise motion control and program execution are needed