The FANUC A20B-2101-0511/04D is a CNC control circuit board (PCB) used inside FANUC CNC systems and industrial machine tools.
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The FANUC A20B-2101-0511/04D is a CNC control circuit board (PCB) used inside FANUC CNC systems and industrial machine tools. It belongs to the A20B series of main/option boards commonly installed in FANUC control cabinets.
This board is typically found in FANUC 0/16/18/21 series and similar control platforms, depending on machine builder configuration.
This board usually serves as an interface / control / option PCB, responsible for communication and signal processing between the CNC main unit and peripheral modules.
Typical roles include:
In many machines it acts as a sub-board connected to the main CPU rack.
| Item | Description |
|---|---|
| Manufacturer | FANUC |
| Part Number | A20B-2101-0511 |
| Version | 04D |
| Type | CNC Control PCB / Interface Board |
| Application | FANUC CNC controller systems |
| Installation | Control cabinet / rack-mounted |
| Condition Types | New / Refurbished / Used |
This board is commonly used in:
Compatibility always depends on the exact CNC configuration and machine builder wiring.
Customers usually replace this board when experiencing:
