Description
A20B-2101-0351 is a Fanuc Corporation printed circuit board (PCB) used inside Fanuc CNC control systems.
🔧 A20B-2101-0351 – Description
- Type: PCB (electronic control board)
- Category: Control / interface board
- System: Fanuc CNC controller hardware
- Role: Internal board for signal processing and system communication
⚙️ What it does
Depending on configuration, this board typically:
- Handles I/O signals between machine and controller
- Interfaces with other boards (CPU, servo system, operator panel)
- Processes control signals for machine operation
- Helps manage communication within the CNC system
🧩 Model breakdown
- A20B → Fanuc PCB/board family
- 2101 → Board series/type
- 0351 → Specific version/revision of the board
🔁 0351 vs 0355 (related variants)
- Both belong to the same 2101 board series
- Differences are usually:
- Minor hardware revisions
- Firmware compatibility
- Slight functional/configuration changes
👉 They are not always directly interchangeable without verification.
🏭 Typical use
- Fanuc CNC controllers (0 series, 16/18/21, etc.)
- Control cabinets of CNC machines
- Industrial automation systems