Description
📌 A16B‑3200‑0490 — FANUC Main CPU PCB (ZERO i-B Main Board)
Description:
The FANUC A16B-3200-0490 is a main CPU printed circuit board (PCB) used as the central processor and control board in FANUC 0i-B series CNC controllers (often associated with the PMC-SA1 system). It is essentially the master logic/control board that runs the CNC control firmware, handles motion and system processing, and interfaces with the rest of the controller’s electronics.
Key Functions:
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🧠 Main CPU / Master Control: Acts as the primary control board for the CNC, running the system logic for machine operation.
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🤖 Controller Brain: Processes programs, interprets G-code, manages motion control, I/O, and communication with other modules.
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🔌 Interfacing: Works with other control boards (memory, PMC, I/O, servo/spindle modules) to coordinate complete machine operation.
Typical Application:
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Designed for use in FANUC ZERO i-B / 0i-B CNC systems (commonly found on milling machines, lathes, and machining centers with that control family).
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Installed inside the control cabinet and connects to system bus, memory cards, displays, and peripheral interfaces.
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Controls up to 6 axes and typical machine tasks depending on configuration.

