Fanuc Option PCB for 16i/ 18i/ 21i A20B-8100-0330

A20B‑8101‑0330 belongs to the same A20B‑8100/A20B‑8101 communication and interface family of FANUC CNC controller boards — and A20B‑8100‑0330 is another board in that family.

📌 FANUC A20B‑8100‑0330 — PMC C Language PCB

• • Part number: A20B‑8100‑0330

  • Description: PMC C Language PCB — a control/communication interface board used inside FANUC CNC controllers. It’s part of the A20B‑8100 series of option and interface PCBs rather than the main CPU, servo, or memory boards.

  • Function:

    • Acts as a PMC (Programmable Machine Controller) C language interface board.

    • Provides specialized communication/control logic functionality that extends the controller’s capabilities — often related to system options, I/O processing, or advanced communications depending on how the controller and machine are configured.

    • Typically installed in an option slot/communication slot on the controller backplane.

  • Series: Part of the A20B‑8100 series of communication/control option boards in FANUC CNC control systems.

  • Status:

    • Available new or refurbished from industrial parts suppliers.

    • Some vendors may offer repair/refurbishment services.