Description
📌 FANUC A16B‑2200‑0661 — Operator Panel I/O PCB
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Part Number: A16B‑2200‑0661
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Type: Sink‑type Output Operator Panel I/O Printed Circuit Board
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Function: This board provides operator panel input/output functions inside the CNC control system. It’s designed to interface the operator’s panel (the human‑machine interface) to the controller logic, handling digital inputs and outputs that come from or go to various switches, indicators and interface circuits on the operator panel.
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I/O Capacity: Typically supports 64 digital inputs and 32 digital outputs — making it suitable for fairly complex CNC operator panels on Series‑16, Series‑18, or Series‑21 controls.
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Series: Part of the A16B‑2200 series of PCBs used in FANUC Series‑16 and similar legacy CNC controllers, where operator panel I/O boards are separate from the main CPU/motion boards.
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Usage: Installed on the controller’s internal backplane or rack and connected via the controller’s I/O link to the machine and operator panel.
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Notes:
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This board commonly works with other operator panel and control cards and is essential for panel button/switch/status signal communication.
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It’s often available new surplus or refurbished; some suppliers also offer repair/exchange services.
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