Description
The A20B‑2003‑0270 is a backplane printed circuit board (PCB) used in industrial Fanuc CNC controller systems. It’s part of the A20B‑2003 series of PCBs and serves as the back panel/backplane board that provides a slot and connection infrastructure for other control PCBs inside the controller cabinet.
📌 Overview
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Part Number: A20B‑2003‑0270
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Type: Backplane / Back Panel PCB (1‑slot)
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Controller Families: Commonly used in FANUC Series 16i‑B, 18i‑B, and 21i‑B controller racks — especially in 1‑slot controller architectures.
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Function:
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Acts as the physical and electrical connection panel that other control boards plug into.
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Provides the structural interface for power, signals, and data between key controller boards (like CPU, memory, I/O, etc.).
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Enables multiple PCBs to communicate via connectors mounted on the backplane board.
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🛠️ Key Details
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Series: A20B‑2003 backplane family — typically horizontal slot type.
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Slots: 1‑slot backplane — supports one plug‑in card position.
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Application: Often used as the central backbone in smaller or single‑board FANUC CNC systems, where only one PCB (or a few PCBs) needs to be connected.
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Interconnect: Provides the physical connector and routing for data/power to and from the controller’s boards.