Description
Overview
The A02B‑2002‑0521 / A20B‑2002‑0521 is a PCB (printed circuit board) / I/O Interface board used in FANUC operator panels for CNC controllers. It is part of the A20B‑2002 series of operator panel I/O modules.
Functionality
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It serves as an Operator Panel I/O interface, meaning it manages the input/output between the operator panel (buttons, indicators, switches) and the CNC control system.
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Specifically, this version is without the MPG (Manual Pulse Generator) interface. That is, no handwheel or jog‑pulse wheel input option is built in.
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It supports 48/32 I/O configuration (48 inputs / 32 outputs) in the operator panel.
Compatibility
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Compatible with multiple FANUC CNC operator panel/control series: 0i, 15i, 16i, 18i, 20i, 21i. These are FANUC control generations used in many CNC mills, lathes, etc.
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It replaces or works in the operator panel, meaning it’s more of a — user control / interface — board rather than the main CPU board for motion control.
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