Fanuc Sub CPU board for 16i/ 18i/ 21i A20B-8002-0190

A20B-8002-0190 is a printed circuit board (PCB) used in CNC control systems produced by FANUC.

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📌 Basic Information

• Part Number: A20B-8002-0190

• Type: Printed Circuit Board (PCB)

• Category: Control / Interface Board

• Used In: FANUC CNC controllers (commonly Series 0 / 0i / 16 / 18 / 21, depending on the machine configuration)

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⚙️ Main Functions

The A20B-8002-0190 board is used for control signal processing and communication between modules within the CNC system.

Typical functions include:

• Processing CNC control signals

• Communication between CNC system boards

• Interface management for machine components

• Supporting overall CNC controller operation

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🧩 Installation Location

This board is typically installed:

• Inside the CNC control cabinet

• On the main control rack / motherboard assembly

• Connected to other boards via the FANUC backplane system

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🔎 Board Series

The A20B-8002 board family includes several internal PCB modules used in FANUC CNC systems. Differences between boards usually relate to:

• Hardware revision

• Specific machine builder configuration

• Interface or I/O differences

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✅ Simple explanation:
A20B-8002-0190 = FANUC internal CNC control PCB used for signal processing and communication inside the CNC controller. 🔧