Fanuc Cover Case for 16i/ 18i/ 21i A02B-0236-D100#3C

A02B-0236-D100#3C is a CNC control module / motherboard assembly used in systems from FANUC.

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📌 Basic Information

• Part Number: A02B-0236-D100#3C

• Type: CNC Main Board / Control Module

• Series: FANUC Series 16i / 18i / 21i (commonly Model B generation)

• Category: CNC controller hardware board

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⚙️ Main Function

This module works as a central hardware board inside the CNC control unit and is responsible for:

• Running CNC system software

• Processing NC programs (G-code / M-code)

• Managing axis motion calculations

• Communicating with servo amplifiers and spindle drives

• Handling PMC ladder control

• Managing machine I/O signals

• Performing system diagnostics and alarm processing

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🧩 Meaning of “#3C”

In FANUC part numbers:

• #3C indicates a specific configuration or option version of the board.

• It may define installed options, firmware compatibility, or hardware configuration required by the machine builder.

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🔌 Typical System Integration

The A02B-0236-D100 board normally works together with:

• Servo amplifier units

• Spindle amplifier

• Operator panel and display

• I/O interface boards

• System memory modules

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✅ Simple explanation:
A02B-0236-D100#3C = FANUC CNC main control board used in 16i/18i/21i series controls to process machining programs and manage machine motion and I/O.